/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 14:38:25,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 14:38:25,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 14:38:25,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 14:38:25,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 14:38:25,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 14:38:25,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 14:38:25,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-15 14:38:25,355 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 14:38:25,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 14:38:25,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 14:38:25,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 14:38:25,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 14:38:25,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 14:38:25,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 14:38:25,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 14:38:25,357 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 14:38:25,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 14:38:25,358 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 14:38:25,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 14:38:25,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 14:38:25,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 14:38:25,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 14:38:25,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 14:38:25,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 14:38:25,358 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 14:38:25,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 14:38:25,358 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 14:38:25,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 14:38:25,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 14:38:25,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 14:38:25,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 14:38:25,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 14:38:25,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:38:25,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 14:38:25,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 14:38:25,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 14:38:25,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 14:38:25,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 14:38:25,359 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 14:38:25,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 14:38:25,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 14:38:25,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 14:38:25,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 14:38:25,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 14:38:25,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 14:38:25,565 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 14:38:25,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-03-15 14:38:25,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176f68e12/f4407eaf0f2a4fb2a9e2d4eb924c72b5/FLAG5078a311f [2022-03-15 14:38:25,931 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 14:38:25,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2022-03-15 14:38:25,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176f68e12/f4407eaf0f2a4fb2a9e2d4eb924c72b5/FLAG5078a311f [2022-03-15 14:38:26,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/176f68e12/f4407eaf0f2a4fb2a9e2d4eb924c72b5 [2022-03-15 14:38:26,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 14:38:26,364 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 14:38:26,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 14:38:26,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 14:38:26,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 14:38:26,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcf5bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26, skipping insertion in model container [2022-03-15 14:38:26,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 14:38:26,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 14:38:26,525 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-03-15 14:38:26,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:38:26,531 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 14:38:26,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2005,2018] [2022-03-15 14:38:26,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:38:26,550 INFO L208 MainTranslator]: Completed translation [2022-03-15 14:38:26,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26 WrapperNode [2022-03-15 14:38:26,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 14:38:26,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 14:38:26,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 14:38:26,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 14:38:26,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,574 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-03-15 14:38:26,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 14:38:26,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 14:38:26,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 14:38:26,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 14:38:26,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 14:38:26,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 14:38:26,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 14:38:26,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 14:38:26,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26" (1/1) ... [2022-03-15 14:38:26,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:38:26,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:26,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 14:38:26,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 14:38:26,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 14:38:26,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 14:38:26,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 14:38:26,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 14:38:26,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 14:38:26,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 14:38:26,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 14:38:26,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 14:38:26,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 14:38:26,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 14:38:26,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 14:38:26,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 14:38:26,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 14:38:26,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 14:38:26,692 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 14:38:26,754 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 14:38:26,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 14:38:26,886 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 14:38:26,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 14:38:26,891 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 14:38:26,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:38:26 BoogieIcfgContainer [2022-03-15 14:38:26,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 14:38:26,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 14:38:26,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 14:38:26,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 14:38:26,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 02:38:26" (1/3) ... [2022-03-15 14:38:26,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4363c1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:38:26, skipping insertion in model container [2022-03-15 14:38:26,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:38:26" (2/3) ... [2022-03-15 14:38:26,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4363c1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:38:26, skipping insertion in model container [2022-03-15 14:38:26,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:38:26" (3/3) ... [2022-03-15 14:38:26,897 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2022-03-15 14:38:26,900 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 14:38:26,900 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 14:38:26,900 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 14:38:26,900 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 14:38:26,920 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,920 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,920 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,920 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,922 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,922 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,922 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,922 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,922 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,922 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,923 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,924 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,924 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,924 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,924 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,925 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,925 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,925 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,925 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,926 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,926 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,926 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,926 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,926 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,926 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,927 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,928 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,928 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,928 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,928 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,930 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,932 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,932 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:38:26,935 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 14:38:26,960 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 14:38:26,964 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 14:38:26,964 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 14:38:26,971 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 87 transitions, 190 flow [2022-03-15 14:38:27,049 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:27,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:27,069 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:27,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:27,070 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1367960911, now seen corresponding path program 1 times [2022-03-15 14:38:27,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:27,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219925783] [2022-03-15 14:38:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:27,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:27,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:27,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219925783] [2022-03-15 14:38:27,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219925783] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:27,187 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:27,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 14:38:27,188 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944726126] [2022-03-15 14:38:27,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:27,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 14:38:27,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:27,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 14:38:27,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:38:27,210 INFO L87 Difference]: Start difference. First operand has 530 states, 529 states have (on average 2.667296786389414) internal successors, (1411), 529 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:27,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:27,235 INFO L93 Difference]: Finished difference Result 530 states and 1320 transitions. [2022-03-15 14:38:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 14:38:27,236 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:27,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:27,246 INFO L225 Difference]: With dead ends: 530 [2022-03-15 14:38:27,246 INFO L226 Difference]: Without dead ends: 528 [2022-03-15 14:38:27,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:38:27,249 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:27,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-03-15 14:38:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-03-15 14:38:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 2.5009487666034156) internal successors, (1318), 527 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:27,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1318 transitions. [2022-03-15 14:38:27,309 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1318 transitions. Word has length 62 [2022-03-15 14:38:27,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:27,309 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1318 transitions. [2022-03-15 14:38:27,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:27,309 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1318 transitions. [2022-03-15 14:38:27,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:27,316 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:27,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:27,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 14:38:27,317 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:27,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1425985199, now seen corresponding path program 1 times [2022-03-15 14:38:27,317 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:27,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410747609] [2022-03-15 14:38:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:27,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:27,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410747609] [2022-03-15 14:38:27,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410747609] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:27,694 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:27,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:27,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983624949] [2022-03-15 14:38:27,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:27,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:27,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:27,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:27,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:27,696 INFO L87 Difference]: Start difference. First operand 528 states and 1318 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:27,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:27,905 INFO L93 Difference]: Finished difference Result 830 states and 2079 transitions. [2022-03-15 14:38:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:27,905 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:27,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:27,909 INFO L225 Difference]: With dead ends: 830 [2022-03-15 14:38:27,909 INFO L226 Difference]: Without dead ends: 764 [2022-03-15 14:38:27,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:38:27,910 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 138 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:27,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 908 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-15 14:38:27,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 619. [2022-03-15 14:38:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 2.483818770226537) internal successors, (1535), 618 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:27,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1535 transitions. [2022-03-15 14:38:27,945 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1535 transitions. Word has length 62 [2022-03-15 14:38:27,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:27,946 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 1535 transitions. [2022-03-15 14:38:27,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:27,946 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1535 transitions. [2022-03-15 14:38:27,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:27,948 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:27,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:27,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 14:38:27,949 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:27,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:27,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2050221647, now seen corresponding path program 2 times [2022-03-15 14:38:27,950 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:27,950 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142272844] [2022-03-15 14:38:27,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:27,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:28,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:28,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142272844] [2022-03-15 14:38:28,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142272844] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:28,234 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:28,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:28,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057121898] [2022-03-15 14:38:28,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:28,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:28,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:28,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:28,237 INFO L87 Difference]: Start difference. First operand 619 states and 1535 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:28,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:28,453 INFO L93 Difference]: Finished difference Result 738 states and 1846 transitions. [2022-03-15 14:38:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:28,454 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:28,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:28,457 INFO L225 Difference]: With dead ends: 738 [2022-03-15 14:38:28,457 INFO L226 Difference]: Without dead ends: 675 [2022-03-15 14:38:28,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:38:28,458 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 123 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:28,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 868 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-03-15 14:38:28,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 627. [2022-03-15 14:38:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 2.487220447284345) internal successors, (1557), 626 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1557 transitions. [2022-03-15 14:38:28,472 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1557 transitions. Word has length 62 [2022-03-15 14:38:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:28,473 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 1557 transitions. [2022-03-15 14:38:28,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1557 transitions. [2022-03-15 14:38:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:28,475 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:28,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:28,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 14:38:28,476 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:28,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1996637171, now seen corresponding path program 3 times [2022-03-15 14:38:28,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:28,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592479466] [2022-03-15 14:38:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:28,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:28,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:28,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592479466] [2022-03-15 14:38:28,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592479466] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:28,679 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:28,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:28,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726136202] [2022-03-15 14:38:28,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:28,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:28,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:28,681 INFO L87 Difference]: Start difference. First operand 627 states and 1557 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:28,881 INFO L93 Difference]: Finished difference Result 741 states and 1848 transitions. [2022-03-15 14:38:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:28,882 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:28,884 INFO L225 Difference]: With dead ends: 741 [2022-03-15 14:38:28,884 INFO L226 Difference]: Without dead ends: 671 [2022-03-15 14:38:28,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:38:28,885 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 126 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:28,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 819 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-03-15 14:38:28,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 623. [2022-03-15 14:38:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 2.485530546623794) internal successors, (1546), 622 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1546 transitions. [2022-03-15 14:38:28,897 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1546 transitions. Word has length 62 [2022-03-15 14:38:28,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:28,897 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1546 transitions. [2022-03-15 14:38:28,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:28,897 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1546 transitions. [2022-03-15 14:38:28,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:28,898 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:28,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:28,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 14:38:28,899 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:28,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:28,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1798753555, now seen corresponding path program 4 times [2022-03-15 14:38:28,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:28,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636544689] [2022-03-15 14:38:28,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:28,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:29,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:29,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636544689] [2022-03-15 14:38:29,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636544689] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:29,042 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:29,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:29,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895756023] [2022-03-15 14:38:29,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:29,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:29,044 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:29,044 INFO L87 Difference]: Start difference. First operand 623 states and 1546 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:29,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:29,241 INFO L93 Difference]: Finished difference Result 782 states and 1957 transitions. [2022-03-15 14:38:29,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:29,242 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:29,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:29,245 INFO L225 Difference]: With dead ends: 782 [2022-03-15 14:38:29,245 INFO L226 Difference]: Without dead ends: 716 [2022-03-15 14:38:29,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:38:29,247 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 132 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:29,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 968 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:29,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-03-15 14:38:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 623. [2022-03-15 14:38:29,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 2.485530546623794) internal successors, (1546), 622 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1546 transitions. [2022-03-15 14:38:29,259 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1546 transitions. Word has length 62 [2022-03-15 14:38:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:29,259 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1546 transitions. [2022-03-15 14:38:29,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1546 transitions. [2022-03-15 14:38:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:29,260 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:29,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:29,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 14:38:29,261 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash -21741301, now seen corresponding path program 5 times [2022-03-15 14:38:29,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:29,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651186114] [2022-03-15 14:38:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:29,451 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:29,451 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651186114] [2022-03-15 14:38:29,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651186114] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:29,451 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:29,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-15 14:38:29,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264309103] [2022-03-15 14:38:29,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:29,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 14:38:29,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:29,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 14:38:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-03-15 14:38:29,453 INFO L87 Difference]: Start difference. First operand 623 states and 1546 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:29,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:29,633 INFO L93 Difference]: Finished difference Result 838 states and 2145 transitions. [2022-03-15 14:38:29,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:29,633 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:29,635 INFO L225 Difference]: With dead ends: 838 [2022-03-15 14:38:29,636 INFO L226 Difference]: Without dead ends: 775 [2022-03-15 14:38:29,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:38:29,640 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 155 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:29,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 768 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:29,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-03-15 14:38:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 643. [2022-03-15 14:38:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5062305295950154) internal successors, (1609), 642 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1609 transitions. [2022-03-15 14:38:29,652 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1609 transitions. Word has length 62 [2022-03-15 14:38:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:29,652 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1609 transitions. [2022-03-15 14:38:29,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1609 transitions. [2022-03-15 14:38:29,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:29,654 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:29,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:29,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 14:38:29,654 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:29,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash -742951413, now seen corresponding path program 6 times [2022-03-15 14:38:29,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:29,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978887864] [2022-03-15 14:38:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:29,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:29,815 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:29,815 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978887864] [2022-03-15 14:38:29,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978887864] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:29,815 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:29,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:29,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070003565] [2022-03-15 14:38:29,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:29,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:29,822 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:29,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:29,822 INFO L87 Difference]: Start difference. First operand 643 states and 1609 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:29,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:29,970 INFO L93 Difference]: Finished difference Result 806 states and 2057 transitions. [2022-03-15 14:38:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:29,970 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:29,973 INFO L225 Difference]: With dead ends: 806 [2022-03-15 14:38:29,973 INFO L226 Difference]: Without dead ends: 743 [2022-03-15 14:38:29,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:38:29,975 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 105 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:29,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 657 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-03-15 14:38:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 647. [2022-03-15 14:38:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 2.501547987616099) internal successors, (1616), 646 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1616 transitions. [2022-03-15 14:38:29,987 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1616 transitions. Word has length 62 [2022-03-15 14:38:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:29,988 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1616 transitions. [2022-03-15 14:38:29,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1616 transitions. [2022-03-15 14:38:29,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:29,989 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:29,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:29,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 14:38:29,989 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:29,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:29,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1967045189, now seen corresponding path program 7 times [2022-03-15 14:38:29,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:29,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279792383] [2022-03-15 14:38:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:29,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:30,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:30,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279792383] [2022-03-15 14:38:30,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279792383] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:30,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:30,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:30,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712922944] [2022-03-15 14:38:30,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:30,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:30,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:30,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:30,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:30,162 INFO L87 Difference]: Start difference. First operand 647 states and 1616 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:30,358 INFO L93 Difference]: Finished difference Result 809 states and 2059 transitions. [2022-03-15 14:38:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:30,358 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:30,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:30,364 INFO L225 Difference]: With dead ends: 809 [2022-03-15 14:38:30,364 INFO L226 Difference]: Without dead ends: 739 [2022-03-15 14:38:30,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:38:30,365 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 143 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:30,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 697 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:30,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-03-15 14:38:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 643. [2022-03-15 14:38:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5) internal successors, (1605), 642 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1605 transitions. [2022-03-15 14:38:30,378 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1605 transitions. Word has length 62 [2022-03-15 14:38:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:30,378 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1605 transitions. [2022-03-15 14:38:30,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1605 transitions. [2022-03-15 14:38:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:30,381 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:30,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:30,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 14:38:30,381 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:30,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:30,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1153891209, now seen corresponding path program 8 times [2022-03-15 14:38:30,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:30,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843368895] [2022-03-15 14:38:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:30,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:30,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:30,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843368895] [2022-03-15 14:38:30,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843368895] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:30,540 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:30,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:30,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061961656] [2022-03-15 14:38:30,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:30,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:30,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:30,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:30,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:30,542 INFO L87 Difference]: Start difference. First operand 643 states and 1605 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:30,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:30,778 INFO L93 Difference]: Finished difference Result 810 states and 2064 transitions. [2022-03-15 14:38:30,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:30,778 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:30,781 INFO L225 Difference]: With dead ends: 810 [2022-03-15 14:38:30,781 INFO L226 Difference]: Without dead ends: 747 [2022-03-15 14:38:30,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:38:30,782 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 116 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:30,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 862 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:30,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-03-15 14:38:30,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 651. [2022-03-15 14:38:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 2.503076923076923) internal successors, (1627), 650 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1627 transitions. [2022-03-15 14:38:30,793 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1627 transitions. Word has length 62 [2022-03-15 14:38:30,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:30,793 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 1627 transitions. [2022-03-15 14:38:30,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:30,793 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1627 transitions. [2022-03-15 14:38:30,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:30,808 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:30,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:30,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-15 14:38:30,808 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:30,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash -431079485, now seen corresponding path program 9 times [2022-03-15 14:38:30,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:30,809 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724670892] [2022-03-15 14:38:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:30,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:31,000 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:31,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724670892] [2022-03-15 14:38:31,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724670892] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:31,001 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:31,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:31,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869683751] [2022-03-15 14:38:31,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:31,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:31,001 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:31,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:31,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:31,002 INFO L87 Difference]: Start difference. First operand 651 states and 1627 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:31,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:31,232 INFO L93 Difference]: Finished difference Result 813 states and 2066 transitions. [2022-03-15 14:38:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:31,233 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:31,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:31,235 INFO L225 Difference]: With dead ends: 813 [2022-03-15 14:38:31,235 INFO L226 Difference]: Without dead ends: 743 [2022-03-15 14:38:31,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:38:31,236 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 163 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:31,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 839 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-03-15 14:38:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 647. [2022-03-15 14:38:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 2.501547987616099) internal successors, (1616), 646 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1616 transitions. [2022-03-15 14:38:31,246 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1616 transitions. Word has length 62 [2022-03-15 14:38:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:31,247 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 1616 transitions. [2022-03-15 14:38:31,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:31,247 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1616 transitions. [2022-03-15 14:38:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:31,248 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:31,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:31,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-15 14:38:31,248 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:31,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1717688431, now seen corresponding path program 10 times [2022-03-15 14:38:31,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:31,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208775009] [2022-03-15 14:38:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:31,377 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:31,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208775009] [2022-03-15 14:38:31,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208775009] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:31,378 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:31,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:31,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640262036] [2022-03-15 14:38:31,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:31,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:31,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:31,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:31,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:31,379 INFO L87 Difference]: Start difference. First operand 647 states and 1616 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:31,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:31,602 INFO L93 Difference]: Finished difference Result 854 states and 2175 transitions. [2022-03-15 14:38:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:31,602 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:31,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:31,605 INFO L225 Difference]: With dead ends: 854 [2022-03-15 14:38:31,605 INFO L226 Difference]: Without dead ends: 788 [2022-03-15 14:38:31,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:38:31,606 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 102 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:31,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 961 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-03-15 14:38:31,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 643. [2022-03-15 14:38:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 2.5) internal successors, (1605), 642 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1605 transitions. [2022-03-15 14:38:31,617 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1605 transitions. Word has length 62 [2022-03-15 14:38:31,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:31,617 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 1605 transitions. [2022-03-15 14:38:31,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:31,617 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1605 transitions. [2022-03-15 14:38:31,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:31,618 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:31,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:31,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-15 14:38:31,619 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:31,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1996739535, now seen corresponding path program 11 times [2022-03-15 14:38:31,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:31,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373710977] [2022-03-15 14:38:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:31,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:31,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:31,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373710977] [2022-03-15 14:38:31,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373710977] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:31,751 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:31,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:31,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423920621] [2022-03-15 14:38:31,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:31,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:31,752 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:31,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:31,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:31,752 INFO L87 Difference]: Start difference. First operand 643 states and 1605 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:31,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:31,966 INFO L93 Difference]: Finished difference Result 882 states and 2234 transitions. [2022-03-15 14:38:31,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:31,966 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:31,969 INFO L225 Difference]: With dead ends: 882 [2022-03-15 14:38:31,969 INFO L226 Difference]: Without dead ends: 819 [2022-03-15 14:38:31,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:38:31,970 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 116 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:31,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1003 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-03-15 14:38:31,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 683. [2022-03-15 14:38:31,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-03-15 14:38:31,982 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-03-15 14:38:31,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:31,982 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-03-15 14:38:31,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:31,982 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-03-15 14:38:31,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:31,983 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:31,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:31,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-15 14:38:31,983 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:31,984 INFO L85 PathProgramCache]: Analyzing trace with hash -931759, now seen corresponding path program 12 times [2022-03-15 14:38:31,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:31,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688403367] [2022-03-15 14:38:31,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:31,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:32,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:32,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688403367] [2022-03-15 14:38:32,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688403367] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:32,123 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:32,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:32,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761861292] [2022-03-15 14:38:32,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:32,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:32,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:32,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:32,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:32,124 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:32,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:32,314 INFO L93 Difference]: Finished difference Result 850 states and 2154 transitions. [2022-03-15 14:38:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:32,315 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:32,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:32,317 INFO L225 Difference]: With dead ends: 850 [2022-03-15 14:38:32,317 INFO L226 Difference]: Without dead ends: 787 [2022-03-15 14:38:32,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:38:32,318 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 157 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:32,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 862 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-15 14:38:32,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 687. [2022-03-15 14:38:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.521865889212828) internal successors, (1730), 686 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1730 transitions. [2022-03-15 14:38:32,329 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1730 transitions. Word has length 62 [2022-03-15 14:38:32,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:32,329 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1730 transitions. [2022-03-15 14:38:32,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:32,329 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1730 transitions. [2022-03-15 14:38:32,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:32,330 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:32,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:32,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-15 14:38:32,331 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash -722141871, now seen corresponding path program 13 times [2022-03-15 14:38:32,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:32,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338393985] [2022-03-15 14:38:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:32,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:32,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:32,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338393985] [2022-03-15 14:38:32,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338393985] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:32,455 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:32,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:32,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230907026] [2022-03-15 14:38:32,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:32,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:32,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:32,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:32,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:32,456 INFO L87 Difference]: Start difference. First operand 687 states and 1730 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:32,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:32,650 INFO L93 Difference]: Finished difference Result 802 states and 2026 transitions. [2022-03-15 14:38:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:32,651 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:32,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:32,653 INFO L225 Difference]: With dead ends: 802 [2022-03-15 14:38:32,653 INFO L226 Difference]: Without dead ends: 739 [2022-03-15 14:38:32,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:38:32,654 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 122 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:32,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 854 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-03-15 14:38:32,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 691. [2022-03-15 14:38:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.517391304347826) internal successors, (1737), 690 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1737 transitions. [2022-03-15 14:38:32,665 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1737 transitions. Word has length 62 [2022-03-15 14:38:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:32,665 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1737 transitions. [2022-03-15 14:38:32,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1737 transitions. [2022-03-15 14:38:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:32,666 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:32,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:32,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-15 14:38:32,667 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:32,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1987854731, now seen corresponding path program 14 times [2022-03-15 14:38:32,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:32,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886047672] [2022-03-15 14:38:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:32,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:32,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:32,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886047672] [2022-03-15 14:38:32,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886047672] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:32,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:32,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:32,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848204809] [2022-03-15 14:38:32,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:32,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:32,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:32,797 INFO L87 Difference]: Start difference. First operand 691 states and 1737 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:33,004 INFO L93 Difference]: Finished difference Result 805 states and 2028 transitions. [2022-03-15 14:38:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:33,004 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:33,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:33,007 INFO L225 Difference]: With dead ends: 805 [2022-03-15 14:38:33,007 INFO L226 Difference]: Without dead ends: 735 [2022-03-15 14:38:33,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:38:33,008 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 108 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:33,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 887 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-03-15 14:38:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 683. [2022-03-15 14:38:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-03-15 14:38:33,019 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-03-15 14:38:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:33,019 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-03-15 14:38:33,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:33,021 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-03-15 14:38:33,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:33,022 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:33,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:33,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-15 14:38:33,022 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:33,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:33,022 INFO L85 PathProgramCache]: Analyzing trace with hash -127774901, now seen corresponding path program 15 times [2022-03-15 14:38:33,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:33,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823126931] [2022-03-15 14:38:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:33,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:33,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:33,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823126931] [2022-03-15 14:38:33,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823126931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:33,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:33,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:33,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673284266] [2022-03-15 14:38:33,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:33,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:33,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:33,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:33,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:33,170 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:33,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:33,393 INFO L93 Difference]: Finished difference Result 910 states and 2347 transitions. [2022-03-15 14:38:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:33,393 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:33,397 INFO L225 Difference]: With dead ends: 910 [2022-03-15 14:38:33,397 INFO L226 Difference]: Without dead ends: 847 [2022-03-15 14:38:33,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:38:33,398 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 159 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:33,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 790 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:33,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-03-15 14:38:33,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 691. [2022-03-15 14:38:33,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.534782608695652) internal successors, (1749), 690 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1749 transitions. [2022-03-15 14:38:33,411 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1749 transitions. Word has length 62 [2022-03-15 14:38:33,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:33,411 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1749 transitions. [2022-03-15 14:38:33,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:33,411 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1749 transitions. [2022-03-15 14:38:33,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:33,412 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:33,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:33,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-15 14:38:33,412 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:33,413 INFO L85 PathProgramCache]: Analyzing trace with hash -848985013, now seen corresponding path program 16 times [2022-03-15 14:38:33,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:33,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314581237] [2022-03-15 14:38:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:33,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:33,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:33,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314581237] [2022-03-15 14:38:33,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314581237] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:33,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:33,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:33,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911247249] [2022-03-15 14:38:33,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:33,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:33,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:33,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:33,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:33,539 INFO L87 Difference]: Start difference. First operand 691 states and 1749 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:33,717 INFO L93 Difference]: Finished difference Result 866 states and 2230 transitions. [2022-03-15 14:38:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:33,717 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:33,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:33,720 INFO L225 Difference]: With dead ends: 866 [2022-03-15 14:38:33,720 INFO L226 Difference]: Without dead ends: 803 [2022-03-15 14:38:33,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:38:33,720 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 123 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:33,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 714 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-03-15 14:38:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 695. [2022-03-15 14:38:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 2.5302593659942363) internal successors, (1756), 694 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1756 transitions. [2022-03-15 14:38:33,730 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1756 transitions. Word has length 62 [2022-03-15 14:38:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:33,730 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1756 transitions. [2022-03-15 14:38:33,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1756 transitions. [2022-03-15 14:38:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:33,732 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:33,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:33,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-15 14:38:33,732 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:33,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:33,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1861011589, now seen corresponding path program 17 times [2022-03-15 14:38:33,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:33,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668099079] [2022-03-15 14:38:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:33,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:33,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:33,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668099079] [2022-03-15 14:38:33,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668099079] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:33,853 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:33,853 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:33,853 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060287316] [2022-03-15 14:38:33,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:33,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:33,853 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:33,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:33,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:33,854 INFO L87 Difference]: Start difference. First operand 695 states and 1756 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:34,056 INFO L93 Difference]: Finished difference Result 869 states and 2232 transitions. [2022-03-15 14:38:34,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:34,056 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:34,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:34,059 INFO L225 Difference]: With dead ends: 869 [2022-03-15 14:38:34,059 INFO L226 Difference]: Without dead ends: 799 [2022-03-15 14:38:34,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:38:34,059 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 106 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:34,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 830 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:34,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-03-15 14:38:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 687. [2022-03-15 14:38:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 2.5276967930029155) internal successors, (1734), 686 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1734 transitions. [2022-03-15 14:38:34,069 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1734 transitions. Word has length 62 [2022-03-15 14:38:34,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:34,070 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1734 transitions. [2022-03-15 14:38:34,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1734 transitions. [2022-03-15 14:38:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:34,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:34,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:34,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-15 14:38:34,071 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:34,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1047857609, now seen corresponding path program 18 times [2022-03-15 14:38:34,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:34,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977606520] [2022-03-15 14:38:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:34,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:34,204 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:34,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977606520] [2022-03-15 14:38:34,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977606520] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:34,204 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:34,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:34,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035648813] [2022-03-15 14:38:34,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:34,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:34,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:34,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:34,205 INFO L87 Difference]: Start difference. First operand 687 states and 1734 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:34,443 INFO L93 Difference]: Finished difference Result 850 states and 2182 transitions. [2022-03-15 14:38:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:34,444 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:34,446 INFO L225 Difference]: With dead ends: 850 [2022-03-15 14:38:34,446 INFO L226 Difference]: Without dead ends: 787 [2022-03-15 14:38:34,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:38:34,447 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 103 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:34,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 867 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:34,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-15 14:38:34,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 695. [2022-03-15 14:38:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 2.5302593659942363) internal successors, (1756), 694 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1756 transitions. [2022-03-15 14:38:34,457 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1756 transitions. Word has length 62 [2022-03-15 14:38:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:34,457 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1756 transitions. [2022-03-15 14:38:34,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1756 transitions. [2022-03-15 14:38:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:34,459 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:34,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:34,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-15 14:38:34,459 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:34,459 INFO L85 PathProgramCache]: Analyzing trace with hash -537113085, now seen corresponding path program 19 times [2022-03-15 14:38:34,459 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:34,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272159481] [2022-03-15 14:38:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:34,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:34,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:34,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272159481] [2022-03-15 14:38:34,587 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272159481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:34,587 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:34,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:34,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038372211] [2022-03-15 14:38:34,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:34,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:34,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:34,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:34,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:34,588 INFO L87 Difference]: Start difference. First operand 695 states and 1756 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:34,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:34,782 INFO L93 Difference]: Finished difference Result 853 states and 2184 transitions. [2022-03-15 14:38:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:34,782 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:34,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:34,785 INFO L225 Difference]: With dead ends: 853 [2022-03-15 14:38:34,785 INFO L226 Difference]: Without dead ends: 783 [2022-03-15 14:38:34,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:38:34,785 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 123 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:34,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 737 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-03-15 14:38:34,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 691. [2022-03-15 14:38:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 690 states have (on average 2.528985507246377) internal successors, (1745), 690 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1745 transitions. [2022-03-15 14:38:34,795 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1745 transitions. Word has length 62 [2022-03-15 14:38:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:34,795 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 1745 transitions. [2022-03-15 14:38:34,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:34,795 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1745 transitions. [2022-03-15 14:38:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-15 14:38:34,796 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:34,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:34,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-15 14:38:34,797 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:34,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:34,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1823722031, now seen corresponding path program 20 times [2022-03-15 14:38:34,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:34,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009968746] [2022-03-15 14:38:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:34,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:34,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009968746] [2022-03-15 14:38:34,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009968746] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:34,913 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:34,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-15 14:38:34,914 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386616293] [2022-03-15 14:38:34,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:34,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:38:34,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:38:34,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:38:34,914 INFO L87 Difference]: Start difference. First operand 691 states and 1745 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:35,148 INFO L93 Difference]: Finished difference Result 894 states and 2293 transitions. [2022-03-15 14:38:35,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:38:35,148 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-03-15 14:38:35,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:35,151 INFO L225 Difference]: With dead ends: 894 [2022-03-15 14:38:35,151 INFO L226 Difference]: Without dead ends: 828 [2022-03-15 14:38:35,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-03-15 14:38:35,152 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 113 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:35,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 966 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-03-15 14:38:35,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 683. [2022-03-15 14:38:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 2.5146627565982405) internal successors, (1715), 682 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1715 transitions. [2022-03-15 14:38:35,161 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1715 transitions. Word has length 62 [2022-03-15 14:38:35,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:35,162 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1715 transitions. [2022-03-15 14:38:35,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,162 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1715 transitions. [2022-03-15 14:38:35,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:35,163 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:35,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:35,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-15 14:38:35,163 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:35,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:35,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1062789427, now seen corresponding path program 1 times [2022-03-15 14:38:35,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:35,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175477166] [2022-03-15 14:38:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:35,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:35,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175477166] [2022-03-15 14:38:35,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175477166] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:35,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:35,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:35,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903056354] [2022-03-15 14:38:35,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:35,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:35,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:35,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:35,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:35,185 INFO L87 Difference]: Start difference. First operand 683 states and 1715 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:35,244 INFO L93 Difference]: Finished difference Result 987 states and 2483 transitions. [2022-03-15 14:38:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 14:38:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:35,248 INFO L225 Difference]: With dead ends: 987 [2022-03-15 14:38:35,248 INFO L226 Difference]: Without dead ends: 906 [2022-03-15 14:38:35,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:38:35,248 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 99 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:35,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 330 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:35,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-03-15 14:38:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 621. [2022-03-15 14:38:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 2.5274193548387096) internal successors, (1567), 620 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1567 transitions. [2022-03-15 14:38:35,257 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1567 transitions. Word has length 66 [2022-03-15 14:38:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:35,258 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1567 transitions. [2022-03-15 14:38:35,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1567 transitions. [2022-03-15 14:38:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:35,259 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:35,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:35,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-15 14:38:35,259 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:35,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -80553619, now seen corresponding path program 1 times [2022-03-15 14:38:35,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:35,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890613820] [2022-03-15 14:38:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:35,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:35,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:35,281 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890613820] [2022-03-15 14:38:35,281 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890613820] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:35,282 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:35,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:35,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280764941] [2022-03-15 14:38:35,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:35,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:35,283 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:35,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:35,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:35,283 INFO L87 Difference]: Start difference. First operand 621 states and 1567 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:35,348 INFO L93 Difference]: Finished difference Result 949 states and 2424 transitions. [2022-03-15 14:38:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 14:38:35,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:35,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:35,363 INFO L225 Difference]: With dead ends: 949 [2022-03-15 14:38:35,363 INFO L226 Difference]: Without dead ends: 949 [2022-03-15 14:38:35,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:38:35,364 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 128 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:35,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 334 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-03-15 14:38:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 637. [2022-03-15 14:38:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 2.539308176100629) internal successors, (1615), 636 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1615 transitions. [2022-03-15 14:38:35,383 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1615 transitions. Word has length 66 [2022-03-15 14:38:35,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:35,383 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 1615 transitions. [2022-03-15 14:38:35,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,384 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1615 transitions. [2022-03-15 14:38:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:35,385 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:35,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:35,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-15 14:38:35,385 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:35,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash 626763185, now seen corresponding path program 2 times [2022-03-15 14:38:35,385 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:35,385 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739138755] [2022-03-15 14:38:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:35,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:35,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:35,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739138755] [2022-03-15 14:38:35,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739138755] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:35,405 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:35,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:35,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569179424] [2022-03-15 14:38:35,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:35,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:35,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:35,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:35,406 INFO L87 Difference]: Start difference. First operand 637 states and 1615 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:35,472 INFO L93 Difference]: Finished difference Result 1128 states and 2881 transitions. [2022-03-15 14:38:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:38:35,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:35,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:35,475 INFO L225 Difference]: With dead ends: 1128 [2022-03-15 14:38:35,475 INFO L226 Difference]: Without dead ends: 1112 [2022-03-15 14:38:35,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:38:35,476 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 133 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:35,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 317 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-03-15 14:38:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 641. [2022-03-15 14:38:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 2.546875) internal successors, (1630), 640 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1630 transitions. [2022-03-15 14:38:35,523 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1630 transitions. Word has length 66 [2022-03-15 14:38:35,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:35,523 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1630 transitions. [2022-03-15 14:38:35,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,524 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1630 transitions. [2022-03-15 14:38:35,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:35,525 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:35,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:35,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-15 14:38:35,525 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:35,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:35,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1732914939, now seen corresponding path program 2 times [2022-03-15 14:38:35,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:35,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40247978] [2022-03-15 14:38:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:35,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:35,546 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:35,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40247978] [2022-03-15 14:38:35,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40247978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:35,546 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:35,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:35,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813137320] [2022-03-15 14:38:35,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:35,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:35,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:35,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:35,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:35,547 INFO L87 Difference]: Start difference. First operand 641 states and 1630 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:35,626 INFO L93 Difference]: Finished difference Result 1299 states and 3298 transitions. [2022-03-15 14:38:35,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:38:35,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:35,629 INFO L225 Difference]: With dead ends: 1299 [2022-03-15 14:38:35,629 INFO L226 Difference]: Without dead ends: 1299 [2022-03-15 14:38:35,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:38:35,629 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 146 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:35,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 356 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2022-03-15 14:38:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 657. [2022-03-15 14:38:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.557926829268293) internal successors, (1678), 656 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1678 transitions. [2022-03-15 14:38:35,644 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1678 transitions. Word has length 66 [2022-03-15 14:38:35,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:35,644 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1678 transitions. [2022-03-15 14:38:35,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,645 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1678 transitions. [2022-03-15 14:38:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:35,646 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:35,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:35,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-15 14:38:35,646 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:35,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:35,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2046949573, now seen corresponding path program 3 times [2022-03-15 14:38:35,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:35,647 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186838736] [2022-03-15 14:38:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:35,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:35,667 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:35,667 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186838736] [2022-03-15 14:38:35,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186838736] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:35,667 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:35,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:35,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807180730] [2022-03-15 14:38:35,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:35,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:35,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:35,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:35,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:35,669 INFO L87 Difference]: Start difference. First operand 657 states and 1678 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:35,742 INFO L93 Difference]: Finished difference Result 1084 states and 2770 transitions. [2022-03-15 14:38:35,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:38:35,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:35,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:35,745 INFO L225 Difference]: With dead ends: 1084 [2022-03-15 14:38:35,745 INFO L226 Difference]: Without dead ends: 1065 [2022-03-15 14:38:35,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:38:35,745 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 104 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:35,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 321 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:35,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-03-15 14:38:35,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 657. [2022-03-15 14:38:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.551829268292683) internal successors, (1674), 656 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1674 transitions. [2022-03-15 14:38:35,758 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1674 transitions. Word has length 66 [2022-03-15 14:38:35,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:35,758 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1674 transitions. [2022-03-15 14:38:35,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,758 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1674 transitions. [2022-03-15 14:38:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:35,759 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:35,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:35,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-15 14:38:35,760 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:35,760 INFO L85 PathProgramCache]: Analyzing trace with hash 236497677, now seen corresponding path program 3 times [2022-03-15 14:38:35,761 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:35,761 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696115946] [2022-03-15 14:38:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:35,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:35,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:35,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696115946] [2022-03-15 14:38:35,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696115946] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:35,781 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:35,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:35,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685471726] [2022-03-15 14:38:35,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:35,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:35,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:35,782 INFO L87 Difference]: Start difference. First operand 657 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:35,870 INFO L93 Difference]: Finished difference Result 1112 states and 2849 transitions. [2022-03-15 14:38:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:38:35,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:35,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:35,872 INFO L225 Difference]: With dead ends: 1112 [2022-03-15 14:38:35,872 INFO L226 Difference]: Without dead ends: 1112 [2022-03-15 14:38:35,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:38:35,873 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 96 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:35,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 338 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:35,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-03-15 14:38:35,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 657. [2022-03-15 14:38:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.551829268292683) internal successors, (1674), 656 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1674 transitions. [2022-03-15 14:38:35,882 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1674 transitions. Word has length 66 [2022-03-15 14:38:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:35,883 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 1674 transitions. [2022-03-15 14:38:35,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,883 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1674 transitions. [2022-03-15 14:38:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:35,900 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:35,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:35,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-15 14:38:35,900 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:35,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:35,901 INFO L85 PathProgramCache]: Analyzing trace with hash -228837771, now seen corresponding path program 4 times [2022-03-15 14:38:35,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:35,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422963130] [2022-03-15 14:38:35,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:35,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:35,920 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:35,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422963130] [2022-03-15 14:38:35,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422963130] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:35,920 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:35,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:35,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681426421] [2022-03-15 14:38:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:35,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:35,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:35,921 INFO L87 Difference]: Start difference. First operand 657 states and 1674 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:35,968 INFO L93 Difference]: Finished difference Result 967 states and 2471 transitions. [2022-03-15 14:38:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 14:38:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:35,969 INFO L225 Difference]: With dead ends: 967 [2022-03-15 14:38:35,969 INFO L226 Difference]: Without dead ends: 919 [2022-03-15 14:38:35,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:38:35,970 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 102 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:35,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 308 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-15 14:38:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 625. [2022-03-15 14:38:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5416666666666665) internal successors, (1586), 624 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1586 transitions. [2022-03-15 14:38:35,979 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1586 transitions. Word has length 66 [2022-03-15 14:38:35,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:35,979 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1586 transitions. [2022-03-15 14:38:35,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1586 transitions. [2022-03-15 14:38:35,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:35,981 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:35,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:35,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-15 14:38:35,981 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:35,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:35,981 INFO L85 PathProgramCache]: Analyzing trace with hash -583910423, now seen corresponding path program 4 times [2022-03-15 14:38:35,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:35,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989404942] [2022-03-15 14:38:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:35,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:36,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:36,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989404942] [2022-03-15 14:38:36,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989404942] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:36,034 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:36,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:36,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938587255] [2022-03-15 14:38:36,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:36,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:36,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:36,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:36,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:36,035 INFO L87 Difference]: Start difference. First operand 625 states and 1586 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:36,112 INFO L93 Difference]: Finished difference Result 959 states and 2469 transitions. [2022-03-15 14:38:36,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 14:38:36,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:36,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:36,114 INFO L225 Difference]: With dead ends: 959 [2022-03-15 14:38:36,115 INFO L226 Difference]: Without dead ends: 959 [2022-03-15 14:38:36,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:38:36,118 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 111 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:36,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 342 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-03-15 14:38:36,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 625. [2022-03-15 14:38:36,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5416666666666665) internal successors, (1586), 624 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1586 transitions. [2022-03-15 14:38:36,128 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1586 transitions. Word has length 66 [2022-03-15 14:38:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:36,128 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1586 transitions. [2022-03-15 14:38:36,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1586 transitions. [2022-03-15 14:38:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:36,129 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:36,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:36,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-15 14:38:36,129 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:36,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:36,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1624806385, now seen corresponding path program 5 times [2022-03-15 14:38:36,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:36,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356890569] [2022-03-15 14:38:36,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:36,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:36,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:36,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356890569] [2022-03-15 14:38:36,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356890569] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:36,148 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:36,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:36,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595145785] [2022-03-15 14:38:36,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:36,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:36,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:36,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:36,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:36,149 INFO L87 Difference]: Start difference. First operand 625 states and 1586 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:36,225 INFO L93 Difference]: Finished difference Result 1086 states and 2779 transitions. [2022-03-15 14:38:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:38:36,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:36,227 INFO L225 Difference]: With dead ends: 1086 [2022-03-15 14:38:36,227 INFO L226 Difference]: Without dead ends: 1070 [2022-03-15 14:38:36,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:38:36,228 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 116 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:36,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 311 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:36,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2022-03-15 14:38:36,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 625. [2022-03-15 14:38:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.53525641025641) internal successors, (1582), 624 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1582 transitions. [2022-03-15 14:38:36,238 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1582 transitions. Word has length 66 [2022-03-15 14:38:36,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:36,238 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1582 transitions. [2022-03-15 14:38:36,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,238 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1582 transitions. [2022-03-15 14:38:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:36,239 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:36,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:36,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-15 14:38:36,239 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash -734871739, now seen corresponding path program 5 times [2022-03-15 14:38:36,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:36,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535515152] [2022-03-15 14:38:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:36,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:36,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:36,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:36,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535515152] [2022-03-15 14:38:36,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535515152] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:36,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:36,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:36,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845062759] [2022-03-15 14:38:36,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:36,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:36,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:36,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:36,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:36,262 INFO L87 Difference]: Start difference. First operand 625 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:36,339 INFO L93 Difference]: Finished difference Result 1257 states and 3196 transitions. [2022-03-15 14:38:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:38:36,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:36,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:36,341 INFO L225 Difference]: With dead ends: 1257 [2022-03-15 14:38:36,341 INFO L226 Difference]: Without dead ends: 1257 [2022-03-15 14:38:36,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:38:36,343 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 132 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:36,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 333 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:38:36,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-03-15 14:38:36,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 625. [2022-03-15 14:38:36,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.53525641025641) internal successors, (1582), 624 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1582 transitions. [2022-03-15 14:38:36,356 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1582 transitions. Word has length 66 [2022-03-15 14:38:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:36,356 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1582 transitions. [2022-03-15 14:38:36,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1582 transitions. [2022-03-15 14:38:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:36,357 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:36,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:36,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-15 14:38:36,357 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:36,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1249974523, now seen corresponding path program 6 times [2022-03-15 14:38:36,358 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:36,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676279821] [2022-03-15 14:38:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:36,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:36,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:36,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676279821] [2022-03-15 14:38:36,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676279821] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:36,390 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:36,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:36,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696444587] [2022-03-15 14:38:36,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:36,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:36,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:36,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:36,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:36,391 INFO L87 Difference]: Start difference. First operand 625 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:36,447 INFO L93 Difference]: Finished difference Result 1018 states and 2598 transitions. [2022-03-15 14:38:36,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:38:36,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:36,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:36,449 INFO L225 Difference]: With dead ends: 1018 [2022-03-15 14:38:36,449 INFO L226 Difference]: Without dead ends: 999 [2022-03-15 14:38:36,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:38:36,450 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 124 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:36,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 302 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-03-15 14:38:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 625. [2022-03-15 14:38:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 624 states have (on average 2.5288461538461537) internal successors, (1578), 624 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1578 transitions. [2022-03-15 14:38:36,460 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1578 transitions. Word has length 66 [2022-03-15 14:38:36,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:36,460 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 1578 transitions. [2022-03-15 14:38:36,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,460 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1578 transitions. [2022-03-15 14:38:36,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-15 14:38:36,461 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:36,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:36,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-15 14:38:36,462 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:36,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:36,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1234540877, now seen corresponding path program 6 times [2022-03-15 14:38:36,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:36,462 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784617392] [2022-03-15 14:38:36,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:36,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:36,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:36,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784617392] [2022-03-15 14:38:36,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784617392] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:38:36,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:38:36,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:38:36,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229394462] [2022-03-15 14:38:36,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:38:36,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:38:36,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:36,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:38:36,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:38:36,480 INFO L87 Difference]: Start difference. First operand 625 states and 1578 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:36,533 INFO L93 Difference]: Finished difference Result 862 states and 2198 transitions. [2022-03-15 14:38:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 14:38:36,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-03-15 14:38:36,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:36,535 INFO L225 Difference]: With dead ends: 862 [2022-03-15 14:38:36,535 INFO L226 Difference]: Without dead ends: 862 [2022-03-15 14:38:36,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-15 14:38:36,535 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 87 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:36,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 312 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:38:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-03-15 14:38:36,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 621. [2022-03-15 14:38:36,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 2.5274193548387096) internal successors, (1567), 620 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1567 transitions. [2022-03-15 14:38:36,544 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1567 transitions. Word has length 66 [2022-03-15 14:38:36,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:36,544 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 1567 transitions. [2022-03-15 14:38:36,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:36,545 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1567 transitions. [2022-03-15 14:38:36,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:38:36,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:36,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:36,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-15 14:38:36,546 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:36,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:36,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1550680847, now seen corresponding path program 1 times [2022-03-15 14:38:36,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:36,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377846766] [2022-03-15 14:38:36,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:36,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:36,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:36,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377846766] [2022-03-15 14:38:36,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377846766] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:36,672 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433665420] [2022-03-15 14:38:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:36,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:36,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:36,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:36,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 14:38:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:36,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:38:36,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:37,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:37,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433665420] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:37,883 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:37,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:38:37,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178610084] [2022-03-15 14:38:37,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:37,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:38:37,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:37,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:38:37,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:38:37,884 INFO L87 Difference]: Start difference. First operand 621 states and 1567 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:39,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:39,420 INFO L93 Difference]: Finished difference Result 1332 states and 3500 transitions. [2022-03-15 14:38:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:38:39,421 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:38:39,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:39,423 INFO L225 Difference]: With dead ends: 1332 [2022-03-15 14:38:39,423 INFO L226 Difference]: Without dead ends: 1257 [2022-03-15 14:38:39,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=766, Invalid=4636, Unknown=0, NotChecked=0, Total=5402 [2022-03-15 14:38:39,425 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 537 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:39,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 2574 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:38:39,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-03-15 14:38:39,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 809. [2022-03-15 14:38:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 808 states have (on average 2.573019801980198) internal successors, (2079), 808 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:39,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 2079 transitions. [2022-03-15 14:38:39,480 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 2079 transitions. Word has length 70 [2022-03-15 14:38:39,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:39,480 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 2079 transitions. [2022-03-15 14:38:39,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:39,480 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 2079 transitions. [2022-03-15 14:38:39,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:38:39,481 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:39,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:39,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:39,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-03-15 14:38:39,698 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:39,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:39,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1707982699, now seen corresponding path program 2 times [2022-03-15 14:38:39,699 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:39,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281270940] [2022-03-15 14:38:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:39,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:39,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:39,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281270940] [2022-03-15 14:38:39,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281270940] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:39,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809016420] [2022-03-15 14:38:39,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:38:39,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:39,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:39,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:39,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 14:38:39,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:38:39,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:39,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:38:39,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:40,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:40,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809016420] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:40,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:40,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:38:40,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070294208] [2022-03-15 14:38:40,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:40,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:38:40,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:40,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:38:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:38:40,832 INFO L87 Difference]: Start difference. First operand 809 states and 2079 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:42,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:42,879 INFO L93 Difference]: Finished difference Result 1555 states and 4131 transitions. [2022-03-15 14:38:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-15 14:38:42,880 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:38:42,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:42,883 INFO L225 Difference]: With dead ends: 1555 [2022-03-15 14:38:42,883 INFO L226 Difference]: Without dead ends: 1480 [2022-03-15 14:38:42,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1151, Invalid=7039, Unknown=0, NotChecked=0, Total=8190 [2022-03-15 14:38:42,885 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 611 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 2758 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:42,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 2758 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:38:42,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2022-03-15 14:38:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 837. [2022-03-15 14:38:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 2.588516746411483) internal successors, (2164), 836 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2164 transitions. [2022-03-15 14:38:42,898 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2164 transitions. Word has length 70 [2022-03-15 14:38:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:42,898 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2164 transitions. [2022-03-15 14:38:42,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:42,898 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2164 transitions. [2022-03-15 14:38:42,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:38:42,899 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:42,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:42,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:43,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-03-15 14:38:43,116 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:43,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:43,116 INFO L85 PathProgramCache]: Analyzing trace with hash -4106897, now seen corresponding path program 3 times [2022-03-15 14:38:43,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:43,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239449755] [2022-03-15 14:38:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:43,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:43,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:43,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239449755] [2022-03-15 14:38:43,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239449755] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:43,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441182165] [2022-03-15 14:38:43,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:38:43,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:43,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:43,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:43,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 14:38:43,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:38:43,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:43,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:38:43,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:43,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:44,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441182165] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:44,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:44,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:38:44,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289588989] [2022-03-15 14:38:44,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:44,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:38:44,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:44,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:38:44,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:38:44,072 INFO L87 Difference]: Start difference. First operand 837 states and 2164 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:45,464 INFO L93 Difference]: Finished difference Result 1564 states and 4070 transitions. [2022-03-15 14:38:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 14:38:45,464 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:38:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:45,467 INFO L225 Difference]: With dead ends: 1564 [2022-03-15 14:38:45,467 INFO L226 Difference]: Without dead ends: 1438 [2022-03-15 14:38:45,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1901 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=915, Invalid=5727, Unknown=0, NotChecked=0, Total=6642 [2022-03-15 14:38:45,469 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 530 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:45,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 2700 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:38:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-03-15 14:38:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 849. [2022-03-15 14:38:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 2.5908018867924527) internal successors, (2197), 848 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 2197 transitions. [2022-03-15 14:38:45,498 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 2197 transitions. Word has length 70 [2022-03-15 14:38:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:45,498 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 2197 transitions. [2022-03-15 14:38:45,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 2197 transitions. [2022-03-15 14:38:45,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:38:45,499 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:45,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:45,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:45,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:45,730 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:45,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:45,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1589077591, now seen corresponding path program 4 times [2022-03-15 14:38:45,731 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:45,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598834019] [2022-03-15 14:38:45,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:45,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:45,876 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:45,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598834019] [2022-03-15 14:38:45,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598834019] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:45,876 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958894391] [2022-03-15 14:38:45,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:38:45,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:45,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:45,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:45,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 14:38:45,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:38:45,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:45,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 14:38:45,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:46,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:46,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958894391] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:46,689 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:46,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-15 14:38:46,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596810483] [2022-03-15 14:38:46,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:46,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:38:46,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:46,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:38:46,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:38:46,690 INFO L87 Difference]: Start difference. First operand 849 states and 2197 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:47,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:47,817 INFO L93 Difference]: Finished difference Result 1357 states and 3523 transitions. [2022-03-15 14:38:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:38:47,817 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:38:47,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:47,820 INFO L225 Difference]: With dead ends: 1357 [2022-03-15 14:38:47,820 INFO L226 Difference]: Without dead ends: 1287 [2022-03-15 14:38:47,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=829, Invalid=4573, Unknown=0, NotChecked=0, Total=5402 [2022-03-15 14:38:47,822 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 395 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 2515 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:47,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 2515 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:38:47,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-03-15 14:38:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 929. [2022-03-15 14:38:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 2.6088362068965516) internal successors, (2421), 928 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 2421 transitions. [2022-03-15 14:38:47,843 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 2421 transitions. Word has length 70 [2022-03-15 14:38:47,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:47,844 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 2421 transitions. [2022-03-15 14:38:47,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:47,844 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 2421 transitions. [2022-03-15 14:38:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:38:47,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:47,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:47,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:48,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-03-15 14:38:48,061 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:48,062 INFO L85 PathProgramCache]: Analyzing trace with hash 742294319, now seen corresponding path program 5 times [2022-03-15 14:38:48,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:48,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543955017] [2022-03-15 14:38:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:48,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:48,183 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:48,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543955017] [2022-03-15 14:38:48,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543955017] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:48,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255101096] [2022-03-15 14:38:48,183 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:38:48,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:48,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:48,184 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:48,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 14:38:48,241 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:38:48,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:48,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:38:48,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:48,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:48,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255101096] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:48,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:48,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:38:48,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491572481] [2022-03-15 14:38:48,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:48,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:38:48,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:48,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:38:48,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:38:48,749 INFO L87 Difference]: Start difference. First operand 929 states and 2421 transitions. Second operand has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:49,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:49,678 INFO L93 Difference]: Finished difference Result 1578 states and 4174 transitions. [2022-03-15 14:38:49,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 14:38:49,678 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:38:49,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:49,681 INFO L225 Difference]: With dead ends: 1578 [2022-03-15 14:38:49,681 INFO L226 Difference]: Without dead ends: 1515 [2022-03-15 14:38:49,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1105, Invalid=5375, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 14:38:49,683 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 788 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:49,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 2105 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:38:49,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-03-15 14:38:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 993. [2022-03-15 14:38:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 2.6461693548387095) internal successors, (2625), 992 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 2625 transitions. [2022-03-15 14:38:49,711 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 2625 transitions. Word has length 70 [2022-03-15 14:38:49,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:49,711 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 2625 transitions. [2022-03-15 14:38:49,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 2625 transitions. [2022-03-15 14:38:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:38:49,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:49,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:49,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:49,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-15 14:38:49,939 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:49,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:49,940 INFO L85 PathProgramCache]: Analyzing trace with hash -969795277, now seen corresponding path program 6 times [2022-03-15 14:38:49,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:49,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448402591] [2022-03-15 14:38:49,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:49,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:50,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:50,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448402591] [2022-03-15 14:38:50,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448402591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:50,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492185374] [2022-03-15 14:38:50,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:38:50,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:50,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:50,094 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:50,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 14:38:50,146 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:38:50,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:50,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:38:50,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:50,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:50,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492185374] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:50,915 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:50,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:38:50,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431092665] [2022-03-15 14:38:50,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:50,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:38:50,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:50,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:38:50,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:38:50,917 INFO L87 Difference]: Start difference. First operand 993 states and 2625 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:51,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:51,972 INFO L93 Difference]: Finished difference Result 1377 states and 3662 transitions. [2022-03-15 14:38:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-15 14:38:51,972 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:38:51,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:51,974 INFO L225 Difference]: With dead ends: 1377 [2022-03-15 14:38:51,974 INFO L226 Difference]: Without dead ends: 1310 [2022-03-15 14:38:51,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1039, Invalid=4967, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 14:38:51,976 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 616 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:51,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 2462 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:38:51,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-03-15 14:38:51,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 977. [2022-03-15 14:38:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 976 states have (on average 2.6403688524590163) internal successors, (2577), 976 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:51,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2577 transitions. [2022-03-15 14:38:51,988 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2577 transitions. Word has length 70 [2022-03-15 14:38:51,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:51,988 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 2577 transitions. [2022-03-15 14:38:51,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:51,989 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2577 transitions. [2022-03-15 14:38:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:38:51,990 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:51,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:52,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:52,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-15 14:38:52,234 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:52,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:52,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1740201325, now seen corresponding path program 7 times [2022-03-15 14:38:52,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:52,235 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818042262] [2022-03-15 14:38:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:52,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:52,378 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:52,379 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818042262] [2022-03-15 14:38:52,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818042262] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:52,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196277990] [2022-03-15 14:38:52,383 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:38:52,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:52,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:52,384 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:52,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 14:38:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:52,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:38:52,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:52,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:53,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196277990] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:53,127 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:53,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:38:53,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105253008] [2022-03-15 14:38:53,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:53,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:38:53,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:53,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:38:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:38:53,128 INFO L87 Difference]: Start difference. First operand 977 states and 2577 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:56,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:38:56,001 INFO L93 Difference]: Finished difference Result 2171 states and 5825 transitions. [2022-03-15 14:38:56,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-15 14:38:56,003 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:38:56,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:38:56,020 INFO L225 Difference]: With dead ends: 2171 [2022-03-15 14:38:56,020 INFO L226 Difference]: Without dead ends: 2031 [2022-03-15 14:38:56,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3871 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1718, Invalid=9838, Unknown=0, NotChecked=0, Total=11556 [2022-03-15 14:38:56,022 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 775 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:38:56,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 2390 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:38:56,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2022-03-15 14:38:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1013. [2022-03-15 14:38:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 2.66403162055336) internal successors, (2696), 1012 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 2696 transitions. [2022-03-15 14:38:56,042 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 2696 transitions. Word has length 70 [2022-03-15 14:38:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:38:56,042 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 2696 transitions. [2022-03-15 14:38:56,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:38:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 2696 transitions. [2022-03-15 14:38:56,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:38:56,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:38:56,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:38:56,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 14:38:56,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:56,260 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:38:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:38:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1996119831, now seen corresponding path program 8 times [2022-03-15 14:38:56,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:38:56,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007259555] [2022-03-15 14:38:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:38:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:38:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:38:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:56,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:38:56,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007259555] [2022-03-15 14:38:56,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007259555] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:38:56,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15379276] [2022-03-15 14:38:56,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:38:56,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:38:56,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:38:56,412 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:38:56,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 14:38:56,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:38:56,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:38:56,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:38:56,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:38:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:56,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:38:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:38:57,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15379276] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:38:57,402 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:38:57,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:38:57,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008088687] [2022-03-15 14:38:57,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:38:57,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:38:57,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:38:57,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:38:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:38:57,405 INFO L87 Difference]: Start difference. First operand 1013 states and 2696 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:00,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:00,355 INFO L93 Difference]: Finished difference Result 2201 states and 5933 transitions. [2022-03-15 14:39:00,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-15 14:39:00,355 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:00,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:00,358 INFO L225 Difference]: With dead ends: 2201 [2022-03-15 14:39:00,358 INFO L226 Difference]: Without dead ends: 2075 [2022-03-15 14:39:00,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3645 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1631, Invalid=9499, Unknown=0, NotChecked=0, Total=11130 [2022-03-15 14:39:00,360 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 768 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:00,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 2313 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:39:00,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-03-15 14:39:00,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1065. [2022-03-15 14:39:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.6907894736842106) internal successors, (2863), 1064 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2863 transitions. [2022-03-15 14:39:00,375 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2863 transitions. Word has length 70 [2022-03-15 14:39:00,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:00,375 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2863 transitions. [2022-03-15 14:39:00,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2863 transitions. [2022-03-15 14:39:00,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:00,377 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:00,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:00,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:00,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-03-15 14:39:00,584 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:00,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash 713876771, now seen corresponding path program 9 times [2022-03-15 14:39:00,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:00,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712285463] [2022-03-15 14:39:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:00,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:00,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712285463] [2022-03-15 14:39:00,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712285463] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:00,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460222606] [2022-03-15 14:39:00,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:39:00,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:00,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:00,739 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:00,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 14:39:00,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:39:00,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:00,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:00,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:01,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:01,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460222606] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:01,739 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:01,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:01,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123885590] [2022-03-15 14:39:01,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:01,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:01,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:01,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:01,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:01,740 INFO L87 Difference]: Start difference. First operand 1065 states and 2863 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:04,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:04,233 INFO L93 Difference]: Finished difference Result 2153 states and 5838 transitions. [2022-03-15 14:39:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-15 14:39:04,233 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:04,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:04,236 INFO L225 Difference]: With dead ends: 2153 [2022-03-15 14:39:04,236 INFO L226 Difference]: Without dead ends: 2013 [2022-03-15 14:39:04,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3745 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1653, Invalid=9689, Unknown=0, NotChecked=0, Total=11342 [2022-03-15 14:39:04,238 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 652 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:04,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 2860 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:39:04,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-03-15 14:39:04,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1065. [2022-03-15 14:39:04,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 2.68703007518797) internal successors, (2859), 1064 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 2859 transitions. [2022-03-15 14:39:04,252 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 2859 transitions. Word has length 70 [2022-03-15 14:39:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:04,253 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 2859 transitions. [2022-03-15 14:39:04,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 2859 transitions. [2022-03-15 14:39:04,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:04,254 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:04,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:04,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:04,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:04,471 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:04,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash -572732175, now seen corresponding path program 10 times [2022-03-15 14:39:04,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:04,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207108537] [2022-03-15 14:39:04,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:04,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:04,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:04,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:04,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207108537] [2022-03-15 14:39:04,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207108537] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:04,602 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844628823] [2022-03-15 14:39:04,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:39:04,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:04,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:04,603 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:04,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 14:39:04,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:39:04,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:04,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 14:39:04,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:04,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:05,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844628823] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:05,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:05,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-15 14:39:05,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568271267] [2022-03-15 14:39:05,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:05,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:39:05,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:05,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:39:05,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:39:05,185 INFO L87 Difference]: Start difference. First operand 1065 states and 2859 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:07,495 INFO L93 Difference]: Finished difference Result 2793 states and 7571 transitions. [2022-03-15 14:39:07,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-15 14:39:07,519 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:07,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:07,524 INFO L225 Difference]: With dead ends: 2793 [2022-03-15 14:39:07,524 INFO L226 Difference]: Without dead ends: 2661 [2022-03-15 14:39:07,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4054 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1760, Invalid=10672, Unknown=0, NotChecked=0, Total=12432 [2022-03-15 14:39:07,531 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 861 mSDsluCounter, 3410 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:07,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 3430 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1788 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:39:07,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2022-03-15 14:39:07,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 1416. [2022-03-15 14:39:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 2.8141342756183745) internal successors, (3982), 1415 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:07,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 3982 transitions. [2022-03-15 14:39:07,557 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 3982 transitions. Word has length 70 [2022-03-15 14:39:07,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:07,558 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 3982 transitions. [2022-03-15 14:39:07,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:07,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 3982 transitions. [2022-03-15 14:39:07,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:07,560 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:07,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:07,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:07,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-15 14:39:07,776 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:07,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:07,776 INFO L85 PathProgramCache]: Analyzing trace with hash -340166747, now seen corresponding path program 11 times [2022-03-15 14:39:07,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:07,777 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91824486] [2022-03-15 14:39:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:07,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:07,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:07,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91824486] [2022-03-15 14:39:07,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91824486] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:07,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392687076] [2022-03-15 14:39:07,914 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:39:07,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:07,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:07,915 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:07,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 14:39:07,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:39:07,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:07,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:07,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:08,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:08,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392687076] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:08,637 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:08,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:08,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634752572] [2022-03-15 14:39:08,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:08,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:08,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:08,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:08,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:08,648 INFO L87 Difference]: Start difference. First operand 1416 states and 3982 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:10,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:10,343 INFO L93 Difference]: Finished difference Result 2895 states and 8029 transitions. [2022-03-15 14:39:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-15 14:39:10,343 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:10,348 INFO L225 Difference]: With dead ends: 2895 [2022-03-15 14:39:10,348 INFO L226 Difference]: Without dead ends: 2769 [2022-03-15 14:39:10,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2406 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1033, Invalid=7157, Unknown=0, NotChecked=0, Total=8190 [2022-03-15 14:39:10,349 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 545 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:10,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 3108 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:39:10,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-03-15 14:39:10,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1444. [2022-03-15 14:39:10,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 2.8184338184338182) internal successors, (4067), 1443 states have internal predecessors, (4067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 4067 transitions. [2022-03-15 14:39:10,393 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 4067 transitions. Word has length 70 [2022-03-15 14:39:10,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:10,393 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 4067 transitions. [2022-03-15 14:39:10,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:10,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 4067 transitions. [2022-03-15 14:39:10,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:10,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:10,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:10,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:10,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-03-15 14:39:10,623 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1925137441, now seen corresponding path program 12 times [2022-03-15 14:39:10,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:10,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278400156] [2022-03-15 14:39:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:10,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:10,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278400156] [2022-03-15 14:39:10,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278400156] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:10,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191016077] [2022-03-15 14:39:10,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:39:10,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:10,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:10,779 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:10,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 14:39:10,836 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:39:10,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:10,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:10,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:11,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:11,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191016077] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:11,677 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:11,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:11,677 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460324894] [2022-03-15 14:39:11,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:11,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:11,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:11,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:11,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:11,678 INFO L87 Difference]: Start difference. First operand 1444 states and 4067 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:13,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:13,524 INFO L93 Difference]: Finished difference Result 2847 states and 7934 transitions. [2022-03-15 14:39:13,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-15 14:39:13,524 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:13,528 INFO L225 Difference]: With dead ends: 2847 [2022-03-15 14:39:13,528 INFO L226 Difference]: Without dead ends: 2707 [2022-03-15 14:39:13,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2499 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1060, Invalid=7312, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 14:39:13,529 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 532 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:13,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 2904 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:39:13,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2022-03-15 14:39:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 1436. [2022-03-15 14:39:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 2.81602787456446) internal successors, (4041), 1435 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 4041 transitions. [2022-03-15 14:39:13,552 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 4041 transitions. Word has length 70 [2022-03-15 14:39:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:13,552 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 4041 transitions. [2022-03-15 14:39:13,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 4041 transitions. [2022-03-15 14:39:13,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:13,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:13,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:13,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-15 14:39:13,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-03-15 14:39:13,759 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1083220909, now seen corresponding path program 13 times [2022-03-15 14:39:13,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:13,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851203334] [2022-03-15 14:39:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:13,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:13,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:13,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851203334] [2022-03-15 14:39:13,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851203334] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:13,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722107461] [2022-03-15 14:39:13,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:39:13,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:13,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:13,912 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:13,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 14:39:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:13,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:13,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:14,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:14,674 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722107461] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:14,674 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:14,674 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:14,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988209414] [2022-03-15 14:39:14,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:14,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:14,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:14,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:14,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:14,675 INFO L87 Difference]: Start difference. First operand 1436 states and 4041 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:17,230 INFO L93 Difference]: Finished difference Result 3158 states and 8754 transitions. [2022-03-15 14:39:17,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-15 14:39:17,230 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:17,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:17,235 INFO L225 Difference]: With dead ends: 3158 [2022-03-15 14:39:17,235 INFO L226 Difference]: Without dead ends: 3026 [2022-03-15 14:39:17,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4898 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1851, Invalid=12669, Unknown=0, NotChecked=0, Total=14520 [2022-03-15 14:39:17,236 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 749 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:17,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 2713 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:39:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2022-03-15 14:39:17,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 1504. [2022-03-15 14:39:17,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 2.821024617431803) internal successors, (4240), 1503 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 4240 transitions. [2022-03-15 14:39:17,259 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 4240 transitions. Word has length 70 [2022-03-15 14:39:17,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:17,259 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 4240 transitions. [2022-03-15 14:39:17,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 4240 transitions. [2022-03-15 14:39:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:17,261 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:17,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:17,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:17,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-03-15 14:39:17,476 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:17,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:17,477 INFO L85 PathProgramCache]: Analyzing trace with hash -295820047, now seen corresponding path program 14 times [2022-03-15 14:39:17,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:17,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636198624] [2022-03-15 14:39:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:17,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:17,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:17,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636198624] [2022-03-15 14:39:17,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636198624] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:17,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574022160] [2022-03-15 14:39:17,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:39:17,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:17,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:17,619 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:17,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 14:39:17,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:39:17,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:17,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:17,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:18,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:18,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574022160] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:18,478 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:18,478 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:18,478 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576479121] [2022-03-15 14:39:18,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:18,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:18,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:18,479 INFO L87 Difference]: Start difference. First operand 1504 states and 4240 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:20,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:20,220 INFO L93 Difference]: Finished difference Result 2838 states and 7871 transitions. [2022-03-15 14:39:20,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-15 14:39:20,220 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:20,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:20,223 INFO L225 Difference]: With dead ends: 2838 [2022-03-15 14:39:20,223 INFO L226 Difference]: Without dead ends: 2706 [2022-03-15 14:39:20,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2679 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1071, Invalid=7859, Unknown=0, NotChecked=0, Total=8930 [2022-03-15 14:39:20,224 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 522 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:20,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 3518 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:39:20,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-03-15 14:39:20,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1519. [2022-03-15 14:39:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 2.816205533596838) internal successors, (4275), 1518 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 4275 transitions. [2022-03-15 14:39:20,254 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 4275 transitions. Word has length 70 [2022-03-15 14:39:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:20,255 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 4275 transitions. [2022-03-15 14:39:20,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 4275 transitions. [2022-03-15 14:39:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:20,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:20,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:20,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-15 14:39:20,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:20,491 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:20,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:20,491 INFO L85 PathProgramCache]: Analyzing trace with hash 146329989, now seen corresponding path program 15 times [2022-03-15 14:39:20,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:20,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150909681] [2022-03-15 14:39:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:20,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:20,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:20,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150909681] [2022-03-15 14:39:20,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150909681] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:20,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623865564] [2022-03-15 14:39:20,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:39:20,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:20,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:20,647 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:20,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 14:39:20,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:39:20,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:20,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:20,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:20,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:21,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623865564] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:21,328 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:21,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:21,328 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408218243] [2022-03-15 14:39:21,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:21,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:21,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:21,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:21,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:21,329 INFO L87 Difference]: Start difference. First operand 1519 states and 4275 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:24,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:24,069 INFO L93 Difference]: Finished difference Result 3305 states and 9252 transitions. [2022-03-15 14:39:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-15 14:39:24,069 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:24,075 INFO L225 Difference]: With dead ends: 3305 [2022-03-15 14:39:24,075 INFO L226 Difference]: Without dead ends: 3179 [2022-03-15 14:39:24,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5564 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2275, Invalid=13475, Unknown=0, NotChecked=0, Total=15750 [2022-03-15 14:39:24,077 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 816 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:24,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 2964 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:39:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2022-03-15 14:39:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 1615. [2022-03-15 14:39:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 2.8469640644361833) internal successors, (4595), 1614 states have internal predecessors, (4595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 4595 transitions. [2022-03-15 14:39:24,110 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 4595 transitions. Word has length 70 [2022-03-15 14:39:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:24,110 INFO L470 AbstractCegarLoop]: Abstraction has 1615 states and 4595 transitions. [2022-03-15 14:39:24,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 4595 transitions. [2022-03-15 14:39:24,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:24,113 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:24,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:24,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:24,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-03-15 14:39:24,327 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1438640705, now seen corresponding path program 16 times [2022-03-15 14:39:24,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:24,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891474774] [2022-03-15 14:39:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:24,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:24,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:24,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891474774] [2022-03-15 14:39:24,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891474774] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:24,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956646352] [2022-03-15 14:39:24,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:39:24,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:24,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:24,461 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:24,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 14:39:24,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:39:24,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:24,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:39:24,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:24,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:25,106 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956646352] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:25,106 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:25,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:39:25,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44091508] [2022-03-15 14:39:25,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:25,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:39:25,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:25,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:39:25,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:39:25,107 INFO L87 Difference]: Start difference. First operand 1615 states and 4595 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:26,837 INFO L93 Difference]: Finished difference Result 3390 states and 9672 transitions. [2022-03-15 14:39:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-03-15 14:39:26,837 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:26,842 INFO L225 Difference]: With dead ends: 3390 [2022-03-15 14:39:26,842 INFO L226 Difference]: Without dead ends: 3213 [2022-03-15 14:39:26,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4151 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1687, Invalid=10745, Unknown=0, NotChecked=0, Total=12432 [2022-03-15 14:39:26,844 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 635 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 3407 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:26,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 3407 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:39:26,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2022-03-15 14:39:26,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 1683. [2022-03-15 14:39:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 2.859690844233056) internal successors, (4810), 1682 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 4810 transitions. [2022-03-15 14:39:26,886 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 4810 transitions. Word has length 70 [2022-03-15 14:39:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:26,886 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 4810 transitions. [2022-03-15 14:39:26,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:26,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 4810 transitions. [2022-03-15 14:39:26,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:26,888 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:26,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:26,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:27,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-03-15 14:39:27,105 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:27,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:27,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1845975855, now seen corresponding path program 17 times [2022-03-15 14:39:27,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:27,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845703478] [2022-03-15 14:39:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:27,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:27,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:27,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845703478] [2022-03-15 14:39:27,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845703478] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:27,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466603141] [2022-03-15 14:39:27,297 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:39:27,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:27,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:27,298 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:27,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 14:39:27,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:39:27,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:27,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:39:27,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:27,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:28,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466603141] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:28,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:28,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:39:28,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290725021] [2022-03-15 14:39:28,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:28,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:39:28,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:39:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:39:28,092 INFO L87 Difference]: Start difference. First operand 1683 states and 4810 transitions. Second operand has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:29,281 INFO L93 Difference]: Finished difference Result 2439 states and 6867 transitions. [2022-03-15 14:39:29,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 14:39:29,281 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:29,284 INFO L225 Difference]: With dead ends: 2439 [2022-03-15 14:39:29,284 INFO L226 Difference]: Without dead ends: 2376 [2022-03-15 14:39:29,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2331 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1318, Invalid=6872, Unknown=0, NotChecked=0, Total=8190 [2022-03-15 14:39:29,286 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 698 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:29,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 2596 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:39:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2022-03-15 14:39:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1763. [2022-03-15 14:39:29,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 2.8819523269012484) internal successors, (5078), 1762 states have internal predecessors, (5078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 5078 transitions. [2022-03-15 14:39:29,310 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 5078 transitions. Word has length 70 [2022-03-15 14:39:29,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:29,310 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 5078 transitions. [2022-03-15 14:39:29,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 33 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:29,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 5078 transitions. [2022-03-15 14:39:29,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:29,313 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:29,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:29,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:29,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-03-15 14:39:29,529 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:29,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:29,530 INFO L85 PathProgramCache]: Analyzing trace with hash 133886259, now seen corresponding path program 18 times [2022-03-15 14:39:29,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:29,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678301242] [2022-03-15 14:39:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:29,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:29,663 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:29,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678301242] [2022-03-15 14:39:29,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678301242] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:29,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621898931] [2022-03-15 14:39:29,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:39:29,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:29,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:29,664 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:29,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 14:39:29,785 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:39:29,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:29,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:39:29,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:30,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:30,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:30,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621898931] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:30,316 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:30,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:39:30,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660325990] [2022-03-15 14:39:30,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:30,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:39:30,317 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:30,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:39:30,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:39:30,317 INFO L87 Difference]: Start difference. First operand 1763 states and 5078 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:31,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:31,219 INFO L93 Difference]: Finished difference Result 2219 states and 6317 transitions. [2022-03-15 14:39:31,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-15 14:39:31,219 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:31,222 INFO L225 Difference]: With dead ends: 2219 [2022-03-15 14:39:31,222 INFO L226 Difference]: Without dead ends: 2152 [2022-03-15 14:39:31,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2127 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1233, Invalid=6423, Unknown=0, NotChecked=0, Total=7656 [2022-03-15 14:39:31,223 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 611 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:31,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 2444 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:39:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2022-03-15 14:39:31,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1683. [2022-03-15 14:39:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 2.8620689655172415) internal successors, (4814), 1682 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 4814 transitions. [2022-03-15 14:39:31,245 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 4814 transitions. Word has length 70 [2022-03-15 14:39:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:31,245 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 4814 transitions. [2022-03-15 14:39:31,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:31,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 4814 transitions. [2022-03-15 14:39:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:31,247 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:31,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:31,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:31,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:31,463 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:31,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1885871487, now seen corresponding path program 19 times [2022-03-15 14:39:31,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:31,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104865728] [2022-03-15 14:39:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:31,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:31,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:31,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104865728] [2022-03-15 14:39:31,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104865728] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:31,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755036824] [2022-03-15 14:39:31,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:39:31,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:31,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:31,568 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:31,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 14:39:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:31,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:31,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:31,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:32,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755036824] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:32,332 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:32,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:32,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713806798] [2022-03-15 14:39:32,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:32,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:32,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:32,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:32,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:32,333 INFO L87 Difference]: Start difference. First operand 1683 states and 4814 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:34,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:34,661 INFO L93 Difference]: Finished difference Result 3486 states and 9856 transitions. [2022-03-15 14:39:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-15 14:39:34,661 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:34,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:34,666 INFO L225 Difference]: With dead ends: 3486 [2022-03-15 14:39:34,666 INFO L226 Difference]: Without dead ends: 3360 [2022-03-15 14:39:34,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4418 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1812, Invalid=11298, Unknown=0, NotChecked=0, Total=13110 [2022-03-15 14:39:34,667 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 680 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:34,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 2543 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:39:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2022-03-15 14:39:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 1795. [2022-03-15 14:39:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 2.881828316610925) internal successors, (5170), 1794 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 5170 transitions. [2022-03-15 14:39:34,693 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 5170 transitions. Word has length 70 [2022-03-15 14:39:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:34,693 INFO L470 AbstractCegarLoop]: Abstraction has 1795 states and 5170 transitions. [2022-03-15 14:39:34,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 5170 transitions. [2022-03-15 14:39:34,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:34,695 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:34,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:34,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:34,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:34,912 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:34,912 INFO L85 PathProgramCache]: Analyzing trace with hash 300900793, now seen corresponding path program 20 times [2022-03-15 14:39:34,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:34,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898964470] [2022-03-15 14:39:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:34,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:35,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:35,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898964470] [2022-03-15 14:39:35,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898964470] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:35,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814263190] [2022-03-15 14:39:35,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:39:35,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:35,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:35,036 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:35,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 14:39:35,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:39:35,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:35,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:35,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:35,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:35,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814263190] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:35,660 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:35,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:35,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29828448] [2022-03-15 14:39:35,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:35,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:35,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:35,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:35,668 INFO L87 Difference]: Start difference. First operand 1795 states and 5170 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:37,973 INFO L93 Difference]: Finished difference Result 3422 states and 9717 transitions. [2022-03-15 14:39:37,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-03-15 14:39:37,973 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:37,979 INFO L225 Difference]: With dead ends: 3422 [2022-03-15 14:39:37,979 INFO L226 Difference]: Without dead ends: 3282 [2022-03-15 14:39:37,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4527 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1850, Invalid=11490, Unknown=0, NotChecked=0, Total=13340 [2022-03-15 14:39:37,981 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 718 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:37,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 2419 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:39:37,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2022-03-15 14:39:38,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 1787. [2022-03-15 14:39:38,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1786 states have (on average 2.875699888017917) internal successors, (5136), 1786 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 5136 transitions. [2022-03-15 14:39:38,023 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 5136 transitions. Word has length 70 [2022-03-15 14:39:38,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:38,023 INFO L470 AbstractCegarLoop]: Abstraction has 1787 states and 5136 transitions. [2022-03-15 14:39:38,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:38,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 5136 transitions. [2022-03-15 14:39:38,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:38,026 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:38,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:38,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:38,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-03-15 14:39:38,234 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:38,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash -985708153, now seen corresponding path program 21 times [2022-03-15 14:39:38,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:38,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987822136] [2022-03-15 14:39:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:38,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:38,397 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:38,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987822136] [2022-03-15 14:39:38,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987822136] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:38,397 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692184383] [2022-03-15 14:39:38,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:39:38,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:38,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:38,398 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:38,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 14:39:38,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:39:38,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:38,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:38,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:38,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:39,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692184383] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:39,398 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:39,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:39,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000191333] [2022-03-15 14:39:39,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:39,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:39,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:39,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:39,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:39,399 INFO L87 Difference]: Start difference. First operand 1787 states and 5136 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:43,030 INFO L93 Difference]: Finished difference Result 3648 states and 10326 transitions. [2022-03-15 14:39:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-15 14:39:43,031 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:43,037 INFO L225 Difference]: With dead ends: 3648 [2022-03-15 14:39:43,037 INFO L226 Difference]: Without dead ends: 3516 [2022-03-15 14:39:43,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6642 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2527, Invalid=15833, Unknown=0, NotChecked=0, Total=18360 [2022-03-15 14:39:43,039 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 824 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:43,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 2785 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:39:43,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2022-03-15 14:39:43,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 1755. [2022-03-15 14:39:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 2.877993158494869) internal successors, (5048), 1754 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 5048 transitions. [2022-03-15 14:39:43,066 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 5048 transitions. Word has length 70 [2022-03-15 14:39:43,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:43,067 INFO L470 AbstractCegarLoop]: Abstraction has 1755 states and 5048 transitions. [2022-03-15 14:39:43,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:43,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 5048 transitions. [2022-03-15 14:39:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:43,069 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:43,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:43,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:43,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:43,283 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:43,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:43,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1930218187, now seen corresponding path program 22 times [2022-03-15 14:39:43,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:43,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662332882] [2022-03-15 14:39:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:43,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:43,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:43,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662332882] [2022-03-15 14:39:43,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662332882] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:43,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247892320] [2022-03-15 14:39:43,417 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:39:43,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:43,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:43,419 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:43,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 14:39:43,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:39:43,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:43,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:39:43,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:43,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:44,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247892320] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:44,220 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:44,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:39:44,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645497211] [2022-03-15 14:39:44,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:44,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:39:44,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:44,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:39:44,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:39:44,221 INFO L87 Difference]: Start difference. First operand 1755 states and 5048 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:45,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:45,957 INFO L93 Difference]: Finished difference Result 2948 states and 8269 transitions. [2022-03-15 14:39:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-15 14:39:45,958 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:45,963 INFO L225 Difference]: With dead ends: 2948 [2022-03-15 14:39:45,963 INFO L226 Difference]: Without dead ends: 2837 [2022-03-15 14:39:45,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1221, Invalid=7335, Unknown=0, NotChecked=0, Total=8556 [2022-03-15 14:39:45,964 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 522 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:45,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 3237 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:39:45,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2022-03-15 14:39:45,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1811. [2022-03-15 14:39:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 2.887292817679558) internal successors, (5226), 1810 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 5226 transitions. [2022-03-15 14:39:45,993 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 5226 transitions. Word has length 70 [2022-03-15 14:39:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:45,994 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 5226 transitions. [2022-03-15 14:39:45,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 5226 transitions. [2022-03-15 14:39:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:45,997 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:45,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:46,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-15 14:39:46,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:46,218 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:46,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:46,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1922599073, now seen corresponding path program 23 times [2022-03-15 14:39:46,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:46,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596685607] [2022-03-15 14:39:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:46,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:46,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:46,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596685607] [2022-03-15 14:39:46,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596685607] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:46,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076115324] [2022-03-15 14:39:46,311 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:39:46,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:46,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:46,313 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:46,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 14:39:46,373 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:39:46,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:46,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:39:46,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:46,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:46,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076115324] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:46,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:46,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:39:46,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134929915] [2022-03-15 14:39:46,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:46,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:39:46,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:39:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:39:46,826 INFO L87 Difference]: Start difference. First operand 1811 states and 5226 transitions. Second operand has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:47,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:47,574 INFO L93 Difference]: Finished difference Result 2448 states and 6998 transitions. [2022-03-15 14:39:47,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-15 14:39:47,575 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:47,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:47,578 INFO L225 Difference]: With dead ends: 2448 [2022-03-15 14:39:47,578 INFO L226 Difference]: Without dead ends: 2385 [2022-03-15 14:39:47,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=968, Invalid=5038, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 14:39:47,580 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 827 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:47,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 2085 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:39:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-03-15 14:39:47,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1935. [2022-03-15 14:39:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 2.892967942088935) internal successors, (5595), 1934 states have internal predecessors, (5595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 5595 transitions. [2022-03-15 14:39:47,639 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 5595 transitions. Word has length 70 [2022-03-15 14:39:47,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:47,639 INFO L470 AbstractCegarLoop]: Abstraction has 1935 states and 5595 transitions. [2022-03-15 14:39:47,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.3333333333333335) internal successors, (110), 33 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 5595 transitions. [2022-03-15 14:39:47,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:47,642 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:47,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:47,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:47,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:47,858 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:47,859 INFO L85 PathProgramCache]: Analyzing trace with hash 787397529, now seen corresponding path program 24 times [2022-03-15 14:39:47,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:47,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067690115] [2022-03-15 14:39:47,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:47,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:48,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:48,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067690115] [2022-03-15 14:39:48,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067690115] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:48,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148127174] [2022-03-15 14:39:48,001 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:39:48,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:48,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:48,002 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:48,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 14:39:48,068 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:39:48,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:48,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:48,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:48,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:48,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148127174] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:48,619 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:48,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:48,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151560868] [2022-03-15 14:39:48,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:48,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:48,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:48,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:48,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:48,621 INFO L87 Difference]: Start difference. First operand 1935 states and 5595 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:52,195 INFO L93 Difference]: Finished difference Result 4151 states and 11923 transitions. [2022-03-15 14:39:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-15 14:39:52,195 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:52,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:52,202 INFO L225 Difference]: With dead ends: 4151 [2022-03-15 14:39:52,202 INFO L226 Difference]: Without dead ends: 4011 [2022-03-15 14:39:52,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6756 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2828, Invalid=15262, Unknown=0, NotChecked=0, Total=18090 [2022-03-15 14:39:52,203 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 829 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:52,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 2587 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:39:52,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-03-15 14:39:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 2051. [2022-03-15 14:39:52,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2050 states have (on average 2.937560975609756) internal successors, (6022), 2050 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 6022 transitions. [2022-03-15 14:39:52,234 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 6022 transitions. Word has length 70 [2022-03-15 14:39:52,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:52,234 INFO L470 AbstractCegarLoop]: Abstraction has 2051 states and 6022 transitions. [2022-03-15 14:39:52,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:52,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 6022 transitions. [2022-03-15 14:39:52,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:52,237 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:52,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:52,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:52,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:52,443 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash -499211417, now seen corresponding path program 25 times [2022-03-15 14:39:52,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:52,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587372015] [2022-03-15 14:39:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:52,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:52,592 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:52,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587372015] [2022-03-15 14:39:52,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587372015] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:52,592 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109067656] [2022-03-15 14:39:52,592 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:39:52,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:52,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:52,593 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:52,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 14:39:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:52,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:52,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:52,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:53,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109067656] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:53,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:53,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:53,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731068514] [2022-03-15 14:39:53,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:53,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:53,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:53,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:53,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:53,201 INFO L87 Difference]: Start difference. First operand 2051 states and 6022 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:39:57,356 INFO L93 Difference]: Finished difference Result 4543 states and 12903 transitions. [2022-03-15 14:39:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-03-15 14:39:57,356 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:39:57,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:39:57,363 INFO L225 Difference]: With dead ends: 4543 [2022-03-15 14:39:57,363 INFO L226 Difference]: Without dead ends: 4411 [2022-03-15 14:39:57,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10013 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3803, Invalid=21637, Unknown=0, NotChecked=0, Total=25440 [2022-03-15 14:39:57,366 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1092 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:39:57,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 2719 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:39:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2022-03-15 14:39:57,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 1943. [2022-03-15 14:39:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1942 states have (on average 2.915036045314109) internal successors, (5661), 1942 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 5661 transitions. [2022-03-15 14:39:57,403 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 5661 transitions. Word has length 70 [2022-03-15 14:39:57,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:39:57,403 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 5661 transitions. [2022-03-15 14:39:57,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:39:57,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 5661 transitions. [2022-03-15 14:39:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:39:57,406 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:39:57,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:39:57,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 14:39:57,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-03-15 14:39:57,635 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:39:57,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:39:57,635 INFO L85 PathProgramCache]: Analyzing trace with hash -222953207, now seen corresponding path program 26 times [2022-03-15 14:39:57,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:39:57,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143309250] [2022-03-15 14:39:57,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:39:57,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:39:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:39:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:57,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:39:57,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143309250] [2022-03-15 14:39:57,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143309250] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:39:57,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379593602] [2022-03-15 14:39:57,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:39:57,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:39:57,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:39:57,734 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:39:57,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 14:39:57,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:39:57,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:39:57,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:39:57,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:39:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:58,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:39:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:39:58,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379593602] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:39:58,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:39:58,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:39:58,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607548254] [2022-03-15 14:39:58,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:39:58,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:39:58,616 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:39:58,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:39:58,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:39:58,616 INFO L87 Difference]: Start difference. First operand 1943 states and 5661 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:02,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:02,366 INFO L93 Difference]: Finished difference Result 4168 states and 12047 transitions. [2022-03-15 14:40:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-15 14:40:02,366 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:02,376 INFO L225 Difference]: With dead ends: 4168 [2022-03-15 14:40:02,376 INFO L226 Difference]: Without dead ends: 4093 [2022-03-15 14:40:02,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7903 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3498, Invalid=17672, Unknown=0, NotChecked=0, Total=21170 [2022-03-15 14:40:02,379 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 1224 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:02,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 2351 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:40:02,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2022-03-15 14:40:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 2171. [2022-03-15 14:40:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 2170 states have (on average 2.9419354838709677) internal successors, (6384), 2170 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 6384 transitions. [2022-03-15 14:40:02,432 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 6384 transitions. Word has length 70 [2022-03-15 14:40:02,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:02,433 INFO L470 AbstractCegarLoop]: Abstraction has 2171 states and 6384 transitions. [2022-03-15 14:40:02,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 6384 transitions. [2022-03-15 14:40:02,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:02,438 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:02,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:02,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 14:40:02,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-15 14:40:02,645 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:02,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1935042803, now seen corresponding path program 27 times [2022-03-15 14:40:02,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:02,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968959036] [2022-03-15 14:40:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:02,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:02,797 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:02,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968959036] [2022-03-15 14:40:02,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968959036] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:02,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164856202] [2022-03-15 14:40:02,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:40:02,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:02,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:02,798 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:02,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 14:40:02,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:40:02,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:02,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:40:02,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:03,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:03,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164856202] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:03,627 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:03,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:40:03,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049450882] [2022-03-15 14:40:03,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:03,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:40:03,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:03,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:40:03,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:40:03,637 INFO L87 Difference]: Start difference. First operand 2171 states and 6384 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:06,731 INFO L93 Difference]: Finished difference Result 4061 states and 11706 transitions. [2022-03-15 14:40:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-03-15 14:40:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:06,737 INFO L225 Difference]: With dead ends: 4061 [2022-03-15 14:40:06,737 INFO L226 Difference]: Without dead ends: 3935 [2022-03-15 14:40:06,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7685 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3319, Invalid=17273, Unknown=0, NotChecked=0, Total=20592 [2022-03-15 14:40:06,739 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 980 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:06,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 2424 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:40:06,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-03-15 14:40:06,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2163. [2022-03-15 14:40:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 2.942645698427382) internal successors, (6362), 2162 states have internal predecessors, (6362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:06,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 6362 transitions. [2022-03-15 14:40:06,774 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 6362 transitions. Word has length 70 [2022-03-15 14:40:06,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:06,774 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 6362 transitions. [2022-03-15 14:40:06,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:06,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 6362 transitions. [2022-03-15 14:40:06,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:06,779 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:06,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:06,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-15 14:40:06,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-03-15 14:40:06,991 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:06,991 INFO L85 PathProgramCache]: Analyzing trace with hash 774953799, now seen corresponding path program 28 times [2022-03-15 14:40:06,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:06,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915402391] [2022-03-15 14:40:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:06,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:07,146 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:07,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915402391] [2022-03-15 14:40:07,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915402391] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:07,146 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965484350] [2022-03-15 14:40:07,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:40:07,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:07,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:07,147 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:07,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 14:40:07,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:40:07,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:07,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:40:07,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:07,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:07,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965484350] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:07,720 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:07,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:40:07,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294512499] [2022-03-15 14:40:07,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:07,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:40:07,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:40:07,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:40:07,721 INFO L87 Difference]: Start difference. First operand 2163 states and 6362 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:10,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:10,216 INFO L93 Difference]: Finished difference Result 4136 states and 12015 transitions. [2022-03-15 14:40:10,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-15 14:40:10,217 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:10,223 INFO L225 Difference]: With dead ends: 4136 [2022-03-15 14:40:10,223 INFO L226 Difference]: Without dead ends: 3990 [2022-03-15 14:40:10,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8287 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2953, Invalid=20609, Unknown=0, NotChecked=0, Total=23562 [2022-03-15 14:40:10,225 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 856 mSDsluCounter, 3209 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:10,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 3242 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:40:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2022-03-15 14:40:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 2547. [2022-03-15 14:40:10,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 2546 states have (on average 2.978004713275727) internal successors, (7582), 2546 states have internal predecessors, (7582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 7582 transitions. [2022-03-15 14:40:10,268 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 7582 transitions. Word has length 70 [2022-03-15 14:40:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:10,268 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 7582 transitions. [2022-03-15 14:40:10,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 7582 transitions. [2022-03-15 14:40:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:10,272 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:10,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:10,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-15 14:40:10,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:10,486 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:10,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:10,486 INFO L85 PathProgramCache]: Analyzing trace with hash 8283375, now seen corresponding path program 29 times [2022-03-15 14:40:10,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:10,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693440532] [2022-03-15 14:40:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:10,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:10,625 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:10,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693440532] [2022-03-15 14:40:10,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693440532] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:10,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018597113] [2022-03-15 14:40:10,625 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:40:10,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:10,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:10,626 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:10,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 14:40:10,696 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:40:10,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:10,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:40:10,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:10,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:11,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018597113] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:11,315 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:11,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:40:11,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514671251] [2022-03-15 14:40:11,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:11,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:40:11,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:40:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:40:11,316 INFO L87 Difference]: Start difference. First operand 2547 states and 7582 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:13,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:13,134 INFO L93 Difference]: Finished difference Result 4263 states and 12331 transitions. [2022-03-15 14:40:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-15 14:40:13,135 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:13,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:13,142 INFO L225 Difference]: With dead ends: 4263 [2022-03-15 14:40:13,142 INFO L226 Difference]: Without dead ends: 4131 [2022-03-15 14:40:13,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2009 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=825, Invalid=5981, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 14:40:13,143 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 567 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 2781 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:13,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 2781 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:40:13,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2022-03-15 14:40:13,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 2583. [2022-03-15 14:40:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2582 states have (on average 2.9763749031758326) internal successors, (7685), 2582 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:13,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 7685 transitions. [2022-03-15 14:40:13,183 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 7685 transitions. Word has length 70 [2022-03-15 14:40:13,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:13,183 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 7685 transitions. [2022-03-15 14:40:13,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:13,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 7685 transitions. [2022-03-15 14:40:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:13,186 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:13,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:13,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-15 14:40:13,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:13,396 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1430331001, now seen corresponding path program 30 times [2022-03-15 14:40:13,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:13,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9329858] [2022-03-15 14:40:13,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:13,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:13,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:13,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9329858] [2022-03-15 14:40:13,523 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9329858] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:13,523 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573301987] [2022-03-15 14:40:13,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:40:13,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:13,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:13,524 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:13,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 14:40:13,590 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:40:13,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:13,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:40:13,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:13,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:14,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573301987] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:14,277 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:14,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:40:14,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989991962] [2022-03-15 14:40:14,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:14,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:40:14,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:14,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:40:14,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:40:14,278 INFO L87 Difference]: Start difference. First operand 2583 states and 7685 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:14,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:14,940 INFO L93 Difference]: Finished difference Result 3172 states and 9281 transitions. [2022-03-15 14:40:14,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:40:14,940 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:14,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:14,944 INFO L225 Difference]: With dead ends: 3172 [2022-03-15 14:40:14,944 INFO L226 Difference]: Without dead ends: 3031 [2022-03-15 14:40:14,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=418, Invalid=2774, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:40:14,945 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 442 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:14,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 2667 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:40:14,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-03-15 14:40:14,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2699. [2022-03-15 14:40:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2698 states have (on average 2.968124536693847) internal successors, (8008), 2698 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 8008 transitions. [2022-03-15 14:40:14,991 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 8008 transitions. Word has length 70 [2022-03-15 14:40:14,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:14,991 INFO L470 AbstractCegarLoop]: Abstraction has 2699 states and 8008 transitions. [2022-03-15 14:40:14,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:14,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 8008 transitions. [2022-03-15 14:40:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:14,994 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:14,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:15,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-15 14:40:15,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-03-15 14:40:15,207 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:15,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:15,208 INFO L85 PathProgramCache]: Analyzing trace with hash -924716199, now seen corresponding path program 31 times [2022-03-15 14:40:15,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:15,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912361852] [2022-03-15 14:40:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:15,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:15,318 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:15,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912361852] [2022-03-15 14:40:15,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912361852] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:15,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544606947] [2022-03-15 14:40:15,318 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:40:15,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:15,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:15,319 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:15,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 14:40:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:15,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:40:15,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:15,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:15,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544606947] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:15,940 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:15,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:40:15,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390133590] [2022-03-15 14:40:15,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:15,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:40:15,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:15,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:40:15,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:40:15,944 INFO L87 Difference]: Start difference. First operand 2699 states and 8008 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:20,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:20,338 INFO L93 Difference]: Finished difference Result 7297 states and 21595 transitions. [2022-03-15 14:40:20,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-03-15 14:40:20,338 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:20,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:20,350 INFO L225 Difference]: With dead ends: 7297 [2022-03-15 14:40:20,350 INFO L226 Difference]: Without dead ends: 7171 [2022-03-15 14:40:20,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11497 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4313, Invalid=25789, Unknown=0, NotChecked=0, Total=30102 [2022-03-15 14:40:20,355 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1040 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:20,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 2882 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:40:20,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7171 states. [2022-03-15 14:40:20,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7171 to 2923. [2022-03-15 14:40:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2922 states have (on average 2.9791238877481176) internal successors, (8705), 2922 states have internal predecessors, (8705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 8705 transitions. [2022-03-15 14:40:20,422 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 8705 transitions. Word has length 70 [2022-03-15 14:40:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:20,422 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 8705 transitions. [2022-03-15 14:40:20,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 8705 transitions. [2022-03-15 14:40:20,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:20,425 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:20,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:20,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-15 14:40:20,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:20,641 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:20,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1785280403, now seen corresponding path program 32 times [2022-03-15 14:40:20,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:20,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358004139] [2022-03-15 14:40:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:20,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:20,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:20,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358004139] [2022-03-15 14:40:20,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358004139] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:20,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150584038] [2022-03-15 14:40:20,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:40:20,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:20,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:20,770 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:20,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 14:40:20,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:40:20,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:20,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:40:20,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:21,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:21,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150584038] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:21,739 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:21,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:40:21,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503507253] [2022-03-15 14:40:21,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:21,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:40:21,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:40:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:40:21,740 INFO L87 Difference]: Start difference. First operand 2923 states and 8705 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:25,523 INFO L93 Difference]: Finished difference Result 7159 states and 21275 transitions. [2022-03-15 14:40:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-03-15 14:40:25,523 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:25,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:25,535 INFO L225 Difference]: With dead ends: 7159 [2022-03-15 14:40:25,535 INFO L226 Difference]: Without dead ends: 7019 [2022-03-15 14:40:25,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11450 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4310, Invalid=25792, Unknown=0, NotChecked=0, Total=30102 [2022-03-15 14:40:25,538 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1121 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:25,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 2761 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:40:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7019 states. [2022-03-15 14:40:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7019 to 2943. [2022-03-15 14:40:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2943 states, 2942 states have (on average 2.976206662134602) internal successors, (8756), 2942 states have internal predecessors, (8756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:25,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 8756 transitions. [2022-03-15 14:40:25,632 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 8756 transitions. Word has length 70 [2022-03-15 14:40:25,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:25,632 INFO L470 AbstractCegarLoop]: Abstraction has 2943 states and 8756 transitions. [2022-03-15 14:40:25,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:25,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 8756 transitions. [2022-03-15 14:40:25,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:25,636 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:25,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:25,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-03-15 14:40:25,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:25,851 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 498671457, now seen corresponding path program 33 times [2022-03-15 14:40:25,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:25,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065914419] [2022-03-15 14:40:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:25,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:25,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:25,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065914419] [2022-03-15 14:40:25,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065914419] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:25,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132976344] [2022-03-15 14:40:25,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:40:25,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:25,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:26,000 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:26,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 14:40:26,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:40:26,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:26,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:40:26,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:26,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:26,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132976344] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:26,710 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:26,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:40:26,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301243077] [2022-03-15 14:40:26,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:26,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:40:26,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:26,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:40:26,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:40:26,711 INFO L87 Difference]: Start difference. First operand 2943 states and 8756 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:31,263 INFO L93 Difference]: Finished difference Result 7372 states and 21849 transitions. [2022-03-15 14:40:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-03-15 14:40:31,263 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:31,277 INFO L225 Difference]: With dead ends: 7372 [2022-03-15 14:40:31,277 INFO L226 Difference]: Without dead ends: 7240 [2022-03-15 14:40:31,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15559 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5327, Invalid=33679, Unknown=0, NotChecked=0, Total=39006 [2022-03-15 14:40:31,280 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1137 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:31,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 3127 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:40:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2022-03-15 14:40:31,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 2911. [2022-03-15 14:40:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2910 states have (on average 2.9786941580756015) internal successors, (8668), 2910 states have internal predecessors, (8668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 8668 transitions. [2022-03-15 14:40:31,344 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 8668 transitions. Word has length 70 [2022-03-15 14:40:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:31,344 INFO L470 AbstractCegarLoop]: Abstraction has 2911 states and 8668 transitions. [2022-03-15 14:40:31,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:31,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 8668 transitions. [2022-03-15 14:40:31,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:31,349 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:31,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:31,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-15 14:40:31,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-03-15 14:40:31,565 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:31,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:31,566 INFO L85 PathProgramCache]: Analyzing trace with hash -880369499, now seen corresponding path program 34 times [2022-03-15 14:40:31,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:31,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965957046] [2022-03-15 14:40:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:31,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:31,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:31,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965957046] [2022-03-15 14:40:31,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965957046] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:31,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953670915] [2022-03-15 14:40:31,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:40:31,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:31,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:31,694 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:31,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 14:40:31,762 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:40:31,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:31,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:40:31,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:32,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:32,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953670915] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:32,497 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:32,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:40:32,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928549589] [2022-03-15 14:40:32,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:32,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:40:32,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:32,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:40:32,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:40:32,498 INFO L87 Difference]: Start difference. First operand 2911 states and 8668 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:34,695 INFO L93 Difference]: Finished difference Result 6164 states and 18125 transitions. [2022-03-15 14:40:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-15 14:40:34,695 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:34,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:34,704 INFO L225 Difference]: With dead ends: 6164 [2022-03-15 14:40:34,704 INFO L226 Difference]: Without dead ends: 6053 [2022-03-15 14:40:34,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5871 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2442, Invalid=13560, Unknown=0, NotChecked=0, Total=16002 [2022-03-15 14:40:34,705 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 891 mSDsluCounter, 3461 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:34,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 3435 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:40:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6053 states. [2022-03-15 14:40:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6053 to 2947. [2022-03-15 14:40:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2947 states, 2946 states have (on average 2.9813306177868295) internal successors, (8783), 2946 states have internal predecessors, (8783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 8783 transitions. [2022-03-15 14:40:34,751 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 8783 transitions. Word has length 70 [2022-03-15 14:40:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:34,751 INFO L470 AbstractCegarLoop]: Abstraction has 2947 states and 8783 transitions. [2022-03-15 14:40:34,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 8783 transitions. [2022-03-15 14:40:34,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:34,754 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:34,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:34,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 14:40:34,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:34,970 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:34,971 INFO L85 PathProgramCache]: Analyzing trace with hash -438219463, now seen corresponding path program 35 times [2022-03-15 14:40:34,971 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:34,971 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198970090] [2022-03-15 14:40:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:34,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:35,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:35,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198970090] [2022-03-15 14:40:35,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198970090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:35,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574887530] [2022-03-15 14:40:35,110 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:40:35,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:35,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:35,111 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:35,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 14:40:35,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:40:35,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:35,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:40:35,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:35,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:40:35,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574887530] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:40:35,419 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:40:35,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-03-15 14:40:35,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273050450] [2022-03-15 14:40:35,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:40:35,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 14:40:35,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:35,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 14:40:35,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-03-15 14:40:35,421 INFO L87 Difference]: Start difference. First operand 2947 states and 8783 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:35,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:35,729 INFO L93 Difference]: Finished difference Result 3382 states and 9952 transitions. [2022-03-15 14:40:35,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:40:35,729 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:35,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:35,734 INFO L225 Difference]: With dead ends: 3382 [2022-03-15 14:40:35,734 INFO L226 Difference]: Without dead ends: 3315 [2022-03-15 14:40:35,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=336, Invalid=1734, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:40:35,734 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 212 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:35,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 1232 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:40:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2022-03-15 14:40:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 2859. [2022-03-15 14:40:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 2.9730580825752275) internal successors, (8497), 2858 states have internal predecessors, (8497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 8497 transitions. [2022-03-15 14:40:35,769 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 8497 transitions. Word has length 70 [2022-03-15 14:40:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:35,770 INFO L470 AbstractCegarLoop]: Abstraction has 2859 states and 8497 transitions. [2022-03-15 14:40:35,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 8497 transitions. [2022-03-15 14:40:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:35,773 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:35,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:35,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-15 14:40:35,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-15 14:40:35,990 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:35,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:35,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2023190157, now seen corresponding path program 36 times [2022-03-15 14:40:35,990 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:35,990 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439003479] [2022-03-15 14:40:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:35,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:36,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:36,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439003479] [2022-03-15 14:40:36,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439003479] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:36,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504454161] [2022-03-15 14:40:36,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:40:36,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:36,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:36,104 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:36,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 14:40:36,174 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:40:36,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:36,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:40:36,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:36,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:37,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504454161] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:37,048 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:37,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:40:37,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159496031] [2022-03-15 14:40:37,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:37,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:40:37,049 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:37,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:40:37,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:40:37,049 INFO L87 Difference]: Start difference. First operand 2859 states and 8497 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:43,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:43,215 INFO L93 Difference]: Finished difference Result 7388 states and 21882 transitions. [2022-03-15 14:40:43,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-03-15 14:40:43,215 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:43,227 INFO L225 Difference]: With dead ends: 7388 [2022-03-15 14:40:43,228 INFO L226 Difference]: Without dead ends: 7248 [2022-03-15 14:40:43,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19327 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=7100, Invalid=39772, Unknown=0, NotChecked=0, Total=46872 [2022-03-15 14:40:43,231 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1263 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:43,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 2657 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:40:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2022-03-15 14:40:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 2899. [2022-03-15 14:40:43,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2898 states have (on average 2.9755003450655626) internal successors, (8623), 2898 states have internal predecessors, (8623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 8623 transitions. [2022-03-15 14:40:43,298 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 8623 transitions. Word has length 70 [2022-03-15 14:40:43,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:43,298 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 8623 transitions. [2022-03-15 14:40:43,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 8623 transitions. [2022-03-15 14:40:43,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:43,302 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:43,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:43,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-15 14:40:43,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:43,519 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:43,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:43,519 INFO L85 PathProgramCache]: Analyzing trace with hash 985168193, now seen corresponding path program 37 times [2022-03-15 14:40:43,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:43,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000696668] [2022-03-15 14:40:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:43,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:43,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:43,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000696668] [2022-03-15 14:40:43,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000696668] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:43,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160011804] [2022-03-15 14:40:43,657 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:40:43,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:43,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:43,658 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:43,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-15 14:40:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:43,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:40:43,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:44,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:44,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160011804] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:44,511 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:44,511 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:40:44,511 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578330846] [2022-03-15 14:40:44,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:44,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:40:44,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:44,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:40:44,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:40:44,512 INFO L87 Difference]: Start difference. First operand 2899 states and 8623 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:50,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:50,992 INFO L93 Difference]: Finished difference Result 7844 states and 23020 transitions. [2022-03-15 14:40:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-03-15 14:40:50,992 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:50,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:51,006 INFO L225 Difference]: With dead ends: 7844 [2022-03-15 14:40:51,006 INFO L226 Difference]: Without dead ends: 7712 [2022-03-15 14:40:51,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25481 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=8557, Invalid=51223, Unknown=0, NotChecked=0, Total=59780 [2022-03-15 14:40:51,009 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1551 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:51,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 2799 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:40:51,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7712 states. [2022-03-15 14:40:51,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7712 to 2875. [2022-03-15 14:40:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2874 states have (on average 2.977383437717467) internal successors, (8557), 2874 states have internal predecessors, (8557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 8557 transitions. [2022-03-15 14:40:51,078 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 8557 transitions. Word has length 70 [2022-03-15 14:40:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:51,078 INFO L470 AbstractCegarLoop]: Abstraction has 2875 states and 8557 transitions. [2022-03-15 14:40:51,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 8557 transitions. [2022-03-15 14:40:51,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:51,082 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:51,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:51,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-15 14:40:51,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-03-15 14:40:51,298 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:51,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:51,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1261426403, now seen corresponding path program 38 times [2022-03-15 14:40:51,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:51,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527527518] [2022-03-15 14:40:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:51,422 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:51,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527527518] [2022-03-15 14:40:51,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527527518] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:51,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452993949] [2022-03-15 14:40:51,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:40:51,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:51,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:51,424 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:51,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-15 14:40:51,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:40:51,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:51,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:40:51,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:51,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:52,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452993949] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:52,343 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:52,343 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:40:52,343 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078066300] [2022-03-15 14:40:52,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:52,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:40:52,344 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:52,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:40:52,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:40:52,344 INFO L87 Difference]: Start difference. First operand 2875 states and 8557 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:53,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:53,380 INFO L93 Difference]: Finished difference Result 3171 states and 9296 transitions. [2022-03-15 14:40:53,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 14:40:53,380 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:53,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:53,387 INFO L225 Difference]: With dead ends: 3171 [2022-03-15 14:40:53,387 INFO L226 Difference]: Without dead ends: 3108 [2022-03-15 14:40:53,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1955 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1327, Invalid=5645, Unknown=0, NotChecked=0, Total=6972 [2022-03-15 14:40:53,388 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 735 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:53,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 2684 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:40:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2022-03-15 14:40:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2895. [2022-03-15 14:40:53,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2894 states have (on average 2.977194194885971) internal successors, (8616), 2894 states have internal predecessors, (8616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:53,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 8616 transitions. [2022-03-15 14:40:53,431 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 8616 transitions. Word has length 70 [2022-03-15 14:40:53,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:53,432 INFO L470 AbstractCegarLoop]: Abstraction has 2895 states and 8616 transitions. [2022-03-15 14:40:53,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:53,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 8616 transitions. [2022-03-15 14:40:53,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:53,436 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:53,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:53,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-15 14:40:53,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:53,656 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:53,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:53,656 INFO L85 PathProgramCache]: Analyzing trace with hash -450663193, now seen corresponding path program 39 times [2022-03-15 14:40:53,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:53,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756292732] [2022-03-15 14:40:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:53,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:53,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:53,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756292732] [2022-03-15 14:40:53,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756292732] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:53,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369635699] [2022-03-15 14:40:53,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:40:53,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:53,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:53,808 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:53,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-15 14:40:53,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:40:53,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:53,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:40:53,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:54,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:54,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369635699] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:54,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:54,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:40:54,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110771568] [2022-03-15 14:40:54,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:54,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:40:54,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:54,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:40:54,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:40:54,671 INFO L87 Difference]: Start difference. First operand 2895 states and 8616 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:56,030 INFO L93 Difference]: Finished difference Result 3164 states and 9233 transitions. [2022-03-15 14:40:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-15 14:40:56,030 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:40:56,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:56,035 INFO L225 Difference]: With dead ends: 3164 [2022-03-15 14:40:56,036 INFO L226 Difference]: Without dead ends: 3101 [2022-03-15 14:40:56,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1297, Invalid=5509, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 14:40:56,037 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 632 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:56,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 2338 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:40:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2022-03-15 14:40:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2263. [2022-03-15 14:40:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 2.892130857648099) internal successors, (6542), 2262 states have internal predecessors, (6542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 6542 transitions. [2022-03-15 14:40:56,069 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 6542 transitions. Word has length 70 [2022-03-15 14:40:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:56,070 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 6542 transitions. [2022-03-15 14:40:56,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 6542 transitions. [2022-03-15 14:40:56,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:40:56,072 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:56,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:56,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-15 14:40:56,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:56,287 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:56,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:56,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2035633887, now seen corresponding path program 40 times [2022-03-15 14:40:56,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:56,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493331223] [2022-03-15 14:40:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:56,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:56,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:56,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493331223] [2022-03-15 14:40:56,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493331223] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:56,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024683894] [2022-03-15 14:40:56,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:40:56,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:56,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:56,391 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:56,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-15 14:40:56,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:40:56,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:56,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:40:56,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:56,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:40:57,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:57,073 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024683894] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:57,073 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:57,073 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:40:57,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826769853] [2022-03-15 14:40:57,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:57,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:40:57,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:57,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:40:57,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:40:57,074 INFO L87 Difference]: Start difference. First operand 2263 states and 6542 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:00,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:00,077 INFO L93 Difference]: Finished difference Result 4510 states and 12932 transitions. [2022-03-15 14:41:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-03-15 14:41:00,077 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:00,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:00,084 INFO L225 Difference]: With dead ends: 4510 [2022-03-15 14:41:00,085 INFO L226 Difference]: Without dead ends: 4398 [2022-03-15 14:41:00,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10124 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4209, Invalid=22851, Unknown=0, NotChecked=0, Total=27060 [2022-03-15 14:41:00,088 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1071 mSDsluCounter, 3338 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:00,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 3352 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-03-15 14:41:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 2271. [2022-03-15 14:41:00,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 2270 states have (on average 2.8969162995594715) internal successors, (6576), 2270 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 6576 transitions. [2022-03-15 14:41:00,129 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 6576 transitions. Word has length 70 [2022-03-15 14:41:00,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:00,129 INFO L470 AbstractCegarLoop]: Abstraction has 2271 states and 6576 transitions. [2022-03-15 14:41:00,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 6576 transitions. [2022-03-15 14:41:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:00,132 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:00,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:00,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:00,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-03-15 14:41:00,349 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:00,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:00,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1492662985, now seen corresponding path program 41 times [2022-03-15 14:41:00,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:00,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116277816] [2022-03-15 14:41:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:00,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:00,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:00,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116277816] [2022-03-15 14:41:00,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116277816] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:00,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226654012] [2022-03-15 14:41:00,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:41:00,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:00,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:00,455 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:00,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-15 14:41:00,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:41:00,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:00,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:00,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:00,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:01,086 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226654012] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:01,086 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:01,086 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:41:01,086 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049862093] [2022-03-15 14:41:01,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:01,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:41:01,086 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:01,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:41:01,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:41:01,087 INFO L87 Difference]: Start difference. First operand 2271 states and 6576 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:03,290 INFO L93 Difference]: Finished difference Result 4929 states and 14107 transitions. [2022-03-15 14:41:03,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-15 14:41:03,290 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:03,297 INFO L225 Difference]: With dead ends: 4929 [2022-03-15 14:41:03,297 INFO L226 Difference]: Without dead ends: 4797 [2022-03-15 14:41:03,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4832 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1870, Invalid=12172, Unknown=0, NotChecked=0, Total=14042 [2022-03-15 14:41:03,298 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 937 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:03,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 2995 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:41:03,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2022-03-15 14:41:03,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 2279. [2022-03-15 14:41:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2278 states have (on average 2.89640035118525) internal successors, (6598), 2278 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 6598 transitions. [2022-03-15 14:41:03,333 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 6598 transitions. Word has length 70 [2022-03-15 14:41:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:03,334 INFO L470 AbstractCegarLoop]: Abstraction has 2279 states and 6598 transitions. [2022-03-15 14:41:03,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 6598 transitions. [2022-03-15 14:41:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:03,336 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:03,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:03,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:03,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:03,551 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash 54048609, now seen corresponding path program 42 times [2022-03-15 14:41:03,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:03,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872693545] [2022-03-15 14:41:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:03,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:03,666 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:03,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872693545] [2022-03-15 14:41:03,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872693545] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:03,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288349329] [2022-03-15 14:41:03,666 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:41:03,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:03,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:03,668 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:03,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-15 14:41:03,739 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:41:03,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:03,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:41:03,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:04,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:04,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288349329] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:04,392 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:04,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:41:04,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429596541] [2022-03-15 14:41:04,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:04,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:41:04,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:04,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:41:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:41:04,393 INFO L87 Difference]: Start difference. First operand 2279 states and 6598 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:05,492 INFO L93 Difference]: Finished difference Result 2897 states and 8239 transitions. [2022-03-15 14:41:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:41:05,492 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:05,497 INFO L225 Difference]: With dead ends: 2897 [2022-03-15 14:41:05,497 INFO L226 Difference]: Without dead ends: 2756 [2022-03-15 14:41:05,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=825, Invalid=4725, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 14:41:05,498 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 738 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:05,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 2797 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:41:05,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2022-03-15 14:41:05,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2183. [2022-03-15 14:41:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2182 states have (on average 2.8900091659028413) internal successors, (6306), 2182 states have internal predecessors, (6306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 6306 transitions. [2022-03-15 14:41:05,523 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 6306 transitions. Word has length 70 [2022-03-15 14:41:05,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:05,523 INFO L470 AbstractCegarLoop]: Abstraction has 2183 states and 6306 transitions. [2022-03-15 14:41:05,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 6306 transitions. [2022-03-15 14:41:05,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:05,526 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:05,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:05,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:05,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:05,738 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:05,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:05,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2133956963, now seen corresponding path program 43 times [2022-03-15 14:41:05,738 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:05,738 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624970796] [2022-03-15 14:41:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:05,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:05,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:05,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624970796] [2022-03-15 14:41:05,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624970796] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:05,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499142521] [2022-03-15 14:41:05,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:41:05,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:05,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:05,920 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:05,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-15 14:41:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:05,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:05,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:06,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:06,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499142521] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:06,684 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:06,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:41:06,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7656020] [2022-03-15 14:41:06,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:06,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:41:06,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:06,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:41:06,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:41:06,685 INFO L87 Difference]: Start difference. First operand 2183 states and 6306 transitions. Second operand has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:07,934 INFO L93 Difference]: Finished difference Result 4598 states and 13080 transitions. [2022-03-15 14:41:07,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 14:41:07,935 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:07,942 INFO L225 Difference]: With dead ends: 4598 [2022-03-15 14:41:07,942 INFO L226 Difference]: Without dead ends: 4523 [2022-03-15 14:41:07,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1064, Invalid=5908, Unknown=0, NotChecked=0, Total=6972 [2022-03-15 14:41:07,943 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 827 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:07,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 2449 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:41:07,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2022-03-15 14:41:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 2247. [2022-03-15 14:41:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 2.885574354407836) internal successors, (6481), 2246 states have internal predecessors, (6481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 6481 transitions. [2022-03-15 14:41:07,984 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 6481 transitions. Word has length 70 [2022-03-15 14:41:07,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:07,984 INFO L470 AbstractCegarLoop]: Abstraction has 2247 states and 6481 transitions. [2022-03-15 14:41:07,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.235294117647059) internal successors, (110), 34 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 6481 transitions. [2022-03-15 14:41:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:07,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:07,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:08,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-03-15 14:41:08,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-03-15 14:41:08,205 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:08,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:08,205 INFO L85 PathProgramCache]: Analyzing trace with hash 548986269, now seen corresponding path program 44 times [2022-03-15 14:41:08,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:08,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195184694] [2022-03-15 14:41:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:08,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:08,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:08,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195184694] [2022-03-15 14:41:08,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195184694] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:08,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801593152] [2022-03-15 14:41:08,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:41:08,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:08,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:08,350 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:08,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-15 14:41:08,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:41:08,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:08,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:08,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:08,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:09,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801593152] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:09,109 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:09,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:41:09,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903052786] [2022-03-15 14:41:09,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:09,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:41:09,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:09,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:41:09,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:41:09,110 INFO L87 Difference]: Start difference. First operand 2247 states and 6481 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:10,357 INFO L93 Difference]: Finished difference Result 4388 states and 12581 transitions. [2022-03-15 14:41:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-15 14:41:10,357 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:10,364 INFO L225 Difference]: With dead ends: 4388 [2022-03-15 14:41:10,364 INFO L226 Difference]: Without dead ends: 4248 [2022-03-15 14:41:10,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2279 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1073, Invalid=6237, Unknown=0, NotChecked=0, Total=7310 [2022-03-15 14:41:10,365 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 568 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:10,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 2849 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:41:10,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2022-03-15 14:41:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 2267. [2022-03-15 14:41:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2266 states have (on average 2.88261253309797) internal successors, (6532), 2266 states have internal predecessors, (6532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 6532 transitions. [2022-03-15 14:41:10,398 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 6532 transitions. Word has length 70 [2022-03-15 14:41:10,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:10,398 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 6532 transitions. [2022-03-15 14:41:10,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 6532 transitions. [2022-03-15 14:41:10,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:10,401 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:10,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:10,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:10,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:10,616 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:10,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:10,627 INFO L85 PathProgramCache]: Analyzing trace with hash -737622677, now seen corresponding path program 45 times [2022-03-15 14:41:10,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:10,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257200612] [2022-03-15 14:41:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:10,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:10,754 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:10,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257200612] [2022-03-15 14:41:10,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257200612] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:10,754 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722613158] [2022-03-15 14:41:10,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:41:10,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:10,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:10,756 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:10,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-15 14:41:10,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:41:10,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:10,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:10,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:11,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:11,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722613158] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:11,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:11,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:41:11,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236985092] [2022-03-15 14:41:11,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:11,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:41:11,570 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:41:11,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:41:11,571 INFO L87 Difference]: Start difference. First operand 2267 states and 6532 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:13,538 INFO L93 Difference]: Finished difference Result 4685 states and 13369 transitions. [2022-03-15 14:41:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-15 14:41:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:13,546 INFO L225 Difference]: With dead ends: 4685 [2022-03-15 14:41:13,546 INFO L226 Difference]: Without dead ends: 4553 [2022-03-15 14:41:13,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4133 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1639, Invalid=10351, Unknown=0, NotChecked=0, Total=11990 [2022-03-15 14:41:13,548 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 793 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:13,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2640 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:41:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2022-03-15 14:41:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 2239. [2022-03-15 14:41:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 2238 states have (on average 2.884271671134942) internal successors, (6455), 2238 states have internal predecessors, (6455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 6455 transitions. [2022-03-15 14:41:13,584 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 6455 transitions. Word has length 70 [2022-03-15 14:41:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:13,584 INFO L470 AbstractCegarLoop]: Abstraction has 2239 states and 6455 transitions. [2022-03-15 14:41:13,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:13,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 6455 transitions. [2022-03-15 14:41:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:13,587 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:13,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:13,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:13,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-03-15 14:41:13,806 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:13,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:13,806 INFO L85 PathProgramCache]: Analyzing trace with hash -2116663633, now seen corresponding path program 46 times [2022-03-15 14:41:13,806 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:13,807 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225310439] [2022-03-15 14:41:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:13,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:13,933 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:13,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225310439] [2022-03-15 14:41:13,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225310439] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:13,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329365181] [2022-03-15 14:41:13,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:41:13,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:13,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:13,934 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:13,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-15 14:41:14,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:41:14,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:14,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:41:14,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:14,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:14,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329365181] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:14,440 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:14,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:41:14,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088356468] [2022-03-15 14:41:14,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:14,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:41:14,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:14,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:41:14,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:41:14,441 INFO L87 Difference]: Start difference. First operand 2239 states and 6455 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:15,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:15,055 INFO L93 Difference]: Finished difference Result 3694 states and 10488 transitions. [2022-03-15 14:41:15,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:41:15,055 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:15,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:15,060 INFO L225 Difference]: With dead ends: 3694 [2022-03-15 14:41:15,060 INFO L226 Difference]: Without dead ends: 3583 [2022-03-15 14:41:15,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=420, Invalid=3002, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 14:41:15,061 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 478 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:15,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 3261 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:41:15,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2022-03-15 14:41:15,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 2261. [2022-03-15 14:41:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 2.8809734513274337) internal successors, (6511), 2260 states have internal predecessors, (6511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 6511 transitions. [2022-03-15 14:41:15,113 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 6511 transitions. Word has length 70 [2022-03-15 14:41:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:15,114 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 6511 transitions. [2022-03-15 14:41:15,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 6511 transitions. [2022-03-15 14:41:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:15,117 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:15,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:15,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-15 14:41:15,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:15,331 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:15,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash 739689287, now seen corresponding path program 47 times [2022-03-15 14:41:15,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:15,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143504171] [2022-03-15 14:41:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:15,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:15,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:15,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143504171] [2022-03-15 14:41:15,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143504171] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:15,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164047451] [2022-03-15 14:41:15,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:41:15,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:15,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:15,456 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:15,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-15 14:41:15,542 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:41:15,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:15,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:41:15,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:15,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:15,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164047451] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:15,948 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:15,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:41:15,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921326388] [2022-03-15 14:41:15,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:15,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:41:15,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:41:15,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:41:15,949 INFO L87 Difference]: Start difference. First operand 2261 states and 6511 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:16,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:16,562 INFO L93 Difference]: Finished difference Result 2798 states and 7920 transitions. [2022-03-15 14:41:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 14:41:16,562 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:16,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:16,566 INFO L225 Difference]: With dead ends: 2798 [2022-03-15 14:41:16,566 INFO L226 Difference]: Without dead ends: 2657 [2022-03-15 14:41:16,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=473, Invalid=3187, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:41:16,567 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 569 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:16,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 2898 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:41:16,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2022-03-15 14:41:16,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2257. [2022-03-15 14:41:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 2.870567375886525) internal successors, (6476), 2256 states have internal predecessors, (6476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 6476 transitions. [2022-03-15 14:41:16,593 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 6476 transitions. Word has length 70 [2022-03-15 14:41:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:16,593 INFO L470 AbstractCegarLoop]: Abstraction has 2257 states and 6476 transitions. [2022-03-15 14:41:16,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 6476 transitions. [2022-03-15 14:41:16,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:16,596 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:16,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:16,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:16,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:16,812 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:16,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:16,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1789143841, now seen corresponding path program 48 times [2022-03-15 14:41:16,813 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:16,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235840041] [2022-03-15 14:41:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:16,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:16,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:16,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235840041] [2022-03-15 14:41:16,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235840041] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:16,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014753101] [2022-03-15 14:41:16,908 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:41:16,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:16,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:16,910 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:16,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-15 14:41:16,970 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:41:16,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:16,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:16,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:17,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:17,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014753101] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:17,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:17,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:41:17,584 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378528385] [2022-03-15 14:41:17,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:17,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:41:17,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:17,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:41:17,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:41:17,584 INFO L87 Difference]: Start difference. First operand 2257 states and 6476 transitions. Second operand has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:19,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:19,020 INFO L93 Difference]: Finished difference Result 4626 states and 12971 transitions. [2022-03-15 14:41:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-15 14:41:19,021 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:19,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:19,028 INFO L225 Difference]: With dead ends: 4626 [2022-03-15 14:41:19,028 INFO L226 Difference]: Without dead ends: 4327 [2022-03-15 14:41:19,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2369 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=892, Invalid=6590, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 14:41:19,029 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1011 mSDsluCounter, 3263 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:19,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 3225 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:41:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4327 states. [2022-03-15 14:41:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4327 to 2221. [2022-03-15 14:41:19,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2220 states have (on average 2.7882882882882885) internal successors, (6190), 2220 states have internal predecessors, (6190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 6190 transitions. [2022-03-15 14:41:19,059 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 6190 transitions. Word has length 70 [2022-03-15 14:41:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:19,059 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 6190 transitions. [2022-03-15 14:41:19,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.176470588235294) internal successors, (108), 34 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 6190 transitions. [2022-03-15 14:41:19,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:19,062 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:19,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:19,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:19,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:19,272 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:19,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1345581259, now seen corresponding path program 49 times [2022-03-15 14:41:19,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:19,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962338644] [2022-03-15 14:41:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:19,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:19,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:19,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962338644] [2022-03-15 14:41:19,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962338644] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:19,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256501229] [2022-03-15 14:41:19,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:41:19,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:19,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:19,391 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:19,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-15 14:41:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:19,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:19,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:19,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:20,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256501229] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:20,247 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:20,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:41:20,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154671009] [2022-03-15 14:41:20,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:20,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:41:20,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:20,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:41:20,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:41:20,248 INFO L87 Difference]: Start difference. First operand 2221 states and 6190 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:21,196 INFO L93 Difference]: Finished difference Result 3277 states and 9055 transitions. [2022-03-15 14:41:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:41:21,196 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:21,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:21,201 INFO L225 Difference]: With dead ends: 3277 [2022-03-15 14:41:21,201 INFO L226 Difference]: Without dead ends: 3130 [2022-03-15 14:41:21,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=753, Invalid=4359, Unknown=0, NotChecked=0, Total=5112 [2022-03-15 14:41:21,204 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 394 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:21,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 2910 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:41:21,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2022-03-15 14:41:21,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2269. [2022-03-15 14:41:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2268 states have (on average 2.7874779541446206) internal successors, (6322), 2268 states have internal predecessors, (6322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 6322 transitions. [2022-03-15 14:41:21,262 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 6322 transitions. Word has length 70 [2022-03-15 14:41:21,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:21,262 INFO L470 AbstractCegarLoop]: Abstraction has 2269 states and 6322 transitions. [2022-03-15 14:41:21,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 6322 transitions. [2022-03-15 14:41:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:21,265 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:21,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:21,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-03-15 14:41:21,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:21,472 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash -424984627, now seen corresponding path program 50 times [2022-03-15 14:41:21,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:21,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618189953] [2022-03-15 14:41:21,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:21,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:21,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:21,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618189953] [2022-03-15 14:41:21,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618189953] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:21,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104377434] [2022-03-15 14:41:21,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:41:21,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:21,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:21,572 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:21,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-15 14:41:21,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:41:21,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:21,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:21,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:21,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:22,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104377434] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:22,201 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:22,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:41:22,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979888562] [2022-03-15 14:41:22,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:22,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:41:22,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:22,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:41:22,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:41:22,202 INFO L87 Difference]: Start difference. First operand 2269 states and 6322 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:23,246 INFO L93 Difference]: Finished difference Result 3297 states and 9110 transitions. [2022-03-15 14:41:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-15 14:41:23,247 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:23,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:23,252 INFO L225 Difference]: With dead ends: 3297 [2022-03-15 14:41:23,252 INFO L226 Difference]: Without dead ends: 3222 [2022-03-15 14:41:23,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=802, Invalid=4454, Unknown=0, NotChecked=0, Total=5256 [2022-03-15 14:41:23,253 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 428 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:23,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 2208 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:41:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2022-03-15 14:41:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2273. [2022-03-15 14:41:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2272 states have (on average 2.787411971830986) internal successors, (6333), 2272 states have internal predecessors, (6333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 6333 transitions. [2022-03-15 14:41:23,279 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 6333 transitions. Word has length 70 [2022-03-15 14:41:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:23,279 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 6333 transitions. [2022-03-15 14:41:23,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 6333 transitions. [2022-03-15 14:41:23,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:23,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:23,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:23,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:23,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-03-15 14:41:23,497 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:23,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1523233091, now seen corresponding path program 51 times [2022-03-15 14:41:23,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:23,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562640388] [2022-03-15 14:41:23,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:23,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:23,628 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:23,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562640388] [2022-03-15 14:41:23,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562640388] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:23,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47182992] [2022-03-15 14:41:23,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:41:23,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:23,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:23,629 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:23,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-15 14:41:23,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:41:23,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:23,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:23,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:24,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:24,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:24,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47182992] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:24,525 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:24,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:41:24,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256882855] [2022-03-15 14:41:24,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:24,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:41:24,526 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:41:24,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:41:24,527 INFO L87 Difference]: Start difference. First operand 2273 states and 6333 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:26,853 INFO L93 Difference]: Finished difference Result 3789 states and 10531 transitions. [2022-03-15 14:41:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-15 14:41:26,853 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:26,858 INFO L225 Difference]: With dead ends: 3789 [2022-03-15 14:41:26,858 INFO L226 Difference]: Without dead ends: 3714 [2022-03-15 14:41:26,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3506 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1972, Invalid=9158, Unknown=0, NotChecked=0, Total=11130 [2022-03-15 14:41:26,860 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 507 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:26,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 2348 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:41:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2022-03-15 14:41:26,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 2297. [2022-03-15 14:41:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2297 states, 2296 states have (on average 2.7905052264808363) internal successors, (6407), 2296 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 6407 transitions. [2022-03-15 14:41:26,901 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 6407 transitions. Word has length 70 [2022-03-15 14:41:26,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:26,901 INFO L470 AbstractCegarLoop]: Abstraction has 2297 states and 6407 transitions. [2022-03-15 14:41:26,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 6407 transitions. [2022-03-15 14:41:26,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:26,904 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:26,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:26,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:27,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:27,114 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:27,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash 719292939, now seen corresponding path program 52 times [2022-03-15 14:41:27,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:27,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197436302] [2022-03-15 14:41:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:27,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:27,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:27,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197436302] [2022-03-15 14:41:27,243 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197436302] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:27,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836055829] [2022-03-15 14:41:27,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:41:27,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:27,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:27,245 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:27,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-15 14:41:27,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:41:27,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:27,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 14:41:27,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:27,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:27,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836055829] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:27,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:27,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2022-03-15 14:41:27,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788804243] [2022-03-15 14:41:27,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:27,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 14:41:27,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:27,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 14:41:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2022-03-15 14:41:27,947 INFO L87 Difference]: Start difference. First operand 2297 states and 6407 transitions. Second operand has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:28,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:28,983 INFO L93 Difference]: Finished difference Result 3673 states and 9986 transitions. [2022-03-15 14:41:28,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 14:41:28,984 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:28,990 INFO L225 Difference]: With dead ends: 3673 [2022-03-15 14:41:28,990 INFO L226 Difference]: Without dead ends: 3514 [2022-03-15 14:41:28,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=621, Invalid=3411, Unknown=0, NotChecked=0, Total=4032 [2022-03-15 14:41:28,991 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 437 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:28,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1924 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:41:28,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2022-03-15 14:41:29,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 2361. [2022-03-15 14:41:29,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 2360 states have (on average 2.791101694915254) internal successors, (6587), 2360 states have internal predecessors, (6587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 6587 transitions. [2022-03-15 14:41:29,022 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 6587 transitions. Word has length 70 [2022-03-15 14:41:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:29,022 INFO L470 AbstractCegarLoop]: Abstraction has 2361 states and 6587 transitions. [2022-03-15 14:41:29,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.586206896551724) internal successors, (104), 29 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:29,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 6587 transitions. [2022-03-15 14:41:29,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:29,026 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:29,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:29,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:29,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-03-15 14:41:29,229 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:29,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:29,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1639889571, now seen corresponding path program 53 times [2022-03-15 14:41:29,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:29,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590427159] [2022-03-15 14:41:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:29,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:29,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:29,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590427159] [2022-03-15 14:41:29,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590427159] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:29,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225526545] [2022-03-15 14:41:29,368 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:41:29,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:29,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:29,369 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:29,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-15 14:41:29,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:41:29,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:29,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:29,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:29,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:29,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:30,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225526545] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:30,336 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:30,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-15 14:41:30,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364356168] [2022-03-15 14:41:30,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:30,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 14:41:30,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:30,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 14:41:30,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 14:41:30,337 INFO L87 Difference]: Start difference. First operand 2361 states and 6587 transitions. Second operand has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:32,285 INFO L93 Difference]: Finished difference Result 4433 states and 12291 transitions. [2022-03-15 14:41:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-15 14:41:32,285 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:32,292 INFO L225 Difference]: With dead ends: 4433 [2022-03-15 14:41:32,292 INFO L226 Difference]: Without dead ends: 4295 [2022-03-15 14:41:32,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1255, Invalid=7675, Unknown=0, NotChecked=0, Total=8930 [2022-03-15 14:41:32,293 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 517 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:32,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 2877 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:32,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2022-03-15 14:41:32,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 2541. [2022-03-15 14:41:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2540 states have (on average 2.8039370078740156) internal successors, (7122), 2540 states have internal predecessors, (7122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 7122 transitions. [2022-03-15 14:41:32,335 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 7122 transitions. Word has length 70 [2022-03-15 14:41:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:32,335 INFO L470 AbstractCegarLoop]: Abstraction has 2541 states and 7122 transitions. [2022-03-15 14:41:32,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.342857142857143) internal successors, (117), 35 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:32,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 7122 transitions. [2022-03-15 14:41:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:32,338 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:32,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:32,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:32,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:32,554 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:32,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash 603585821, now seen corresponding path program 54 times [2022-03-15 14:41:32,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:32,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038876667] [2022-03-15 14:41:32,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:32,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:32,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:32,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038876667] [2022-03-15 14:41:32,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038876667] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:32,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701077431] [2022-03-15 14:41:32,692 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:41:32,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:32,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:32,693 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:32,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-15 14:41:32,771 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:41:32,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:32,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:32,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:33,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:33,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701077431] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:33,446 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:33,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-15 14:41:33,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302954002] [2022-03-15 14:41:33,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:33,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 14:41:33,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:33,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 14:41:33,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2022-03-15 14:41:33,447 INFO L87 Difference]: Start difference. First operand 2541 states and 7122 transitions. Second operand has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:36,791 INFO L93 Difference]: Finished difference Result 5151 states and 14441 transitions. [2022-03-15 14:41:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-03-15 14:41:36,792 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:36,800 INFO L225 Difference]: With dead ends: 5151 [2022-03-15 14:41:36,800 INFO L226 Difference]: Without dead ends: 5076 [2022-03-15 14:41:36,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2496, Invalid=14796, Unknown=0, NotChecked=0, Total=17292 [2022-03-15 14:41:36,801 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 696 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:36,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2631 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2022-03-15 14:41:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 2677. [2022-03-15 14:41:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2676 states have (on average 2.828101644245142) internal successors, (7568), 2676 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 7568 transitions. [2022-03-15 14:41:36,841 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 7568 transitions. Word has length 70 [2022-03-15 14:41:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:36,842 INFO L470 AbstractCegarLoop]: Abstraction has 2677 states and 7568 transitions. [2022-03-15 14:41:36,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 7568 transitions. [2022-03-15 14:41:36,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:36,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:36,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:36,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:37,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:37,060 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:37,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:37,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1601492827, now seen corresponding path program 55 times [2022-03-15 14:41:37,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:37,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729149803] [2022-03-15 14:41:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:37,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:37,203 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:37,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729149803] [2022-03-15 14:41:37,203 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729149803] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:37,203 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943956335] [2022-03-15 14:41:37,203 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:41:37,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:37,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:37,205 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:37,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-15 14:41:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:37,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:37,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:37,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:37,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943956335] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:37,993 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:37,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-15 14:41:37,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450999137] [2022-03-15 14:41:37,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:37,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 14:41:37,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:37,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 14:41:37,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-03-15 14:41:37,994 INFO L87 Difference]: Start difference. First operand 2677 states and 7568 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:40,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:40,175 INFO L93 Difference]: Finished difference Result 5030 states and 14106 transitions. [2022-03-15 14:41:40,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-15 14:41:40,175 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:40,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:40,184 INFO L225 Difference]: With dead ends: 5030 [2022-03-15 14:41:40,185 INFO L226 Difference]: Without dead ends: 4941 [2022-03-15 14:41:40,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3617 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1555, Invalid=9575, Unknown=0, NotChecked=0, Total=11130 [2022-03-15 14:41:40,186 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 652 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:40,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 2548 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:41:40,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2022-03-15 14:41:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 3061. [2022-03-15 14:41:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 3060 states have (on average 2.8705882352941177) internal successors, (8784), 3060 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 8784 transitions. [2022-03-15 14:41:40,241 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 8784 transitions. Word has length 70 [2022-03-15 14:41:40,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:40,241 INFO L470 AbstractCegarLoop]: Abstraction has 3061 states and 8784 transitions. [2022-03-15 14:41:40,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 8784 transitions. [2022-03-15 14:41:40,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:40,245 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:40,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:40,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:40,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:40,449 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:40,450 INFO L85 PathProgramCache]: Analyzing trace with hash 541641107, now seen corresponding path program 56 times [2022-03-15 14:41:40,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:40,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439159706] [2022-03-15 14:41:40,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:40,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:40,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:40,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439159706] [2022-03-15 14:41:40,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439159706] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:40,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69158668] [2022-03-15 14:41:40,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:41:40,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:40,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:40,592 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:40,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-15 14:41:40,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:41:40,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:40,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:40,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:40,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:41,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69158668] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:41,325 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:41,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-15 14:41:41,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28229370] [2022-03-15 14:41:41,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:41,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 14:41:41,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:41,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 14:41:41,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-03-15 14:41:41,340 INFO L87 Difference]: Start difference. First operand 3061 states and 8784 transitions. Second operand has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:45,647 INFO L93 Difference]: Finished difference Result 5152 states and 14487 transitions. [2022-03-15 14:41:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-03-15 14:41:45,647 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:45,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:45,655 INFO L225 Difference]: With dead ends: 5152 [2022-03-15 14:41:45,656 INFO L226 Difference]: Without dead ends: 5077 [2022-03-15 14:41:45,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8367 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3445, Invalid=19205, Unknown=0, NotChecked=0, Total=22650 [2022-03-15 14:41:45,658 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 610 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:45,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 3333 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-03-15 14:41:45,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 3069. [2022-03-15 14:41:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 3068 states have (on average 2.8715775749674055) internal successors, (8810), 3068 states have internal predecessors, (8810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 8810 transitions. [2022-03-15 14:41:45,704 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 8810 transitions. Word has length 70 [2022-03-15 14:41:45,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:45,704 INFO L470 AbstractCegarLoop]: Abstraction has 3069 states and 8810 transitions. [2022-03-15 14:41:45,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:45,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 8810 transitions. [2022-03-15 14:41:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:45,707 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:45,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:45,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:45,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:45,916 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash -494662643, now seen corresponding path program 57 times [2022-03-15 14:41:45,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:45,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095840277] [2022-03-15 14:41:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:45,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:46,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:46,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095840277] [2022-03-15 14:41:46,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095840277] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:46,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017883240] [2022-03-15 14:41:46,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:41:46,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:46,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:46,062 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:46,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-15 14:41:46,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:41:46,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:46,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:46,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:46,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:46,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017883240] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:46,825 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:46,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-15 14:41:46,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207480745] [2022-03-15 14:41:46,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:46,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 14:41:46,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:46,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 14:41:46,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2022-03-15 14:41:46,826 INFO L87 Difference]: Start difference. First operand 3069 states and 8810 transitions. Second operand has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:51,974 INFO L93 Difference]: Finished difference Result 5557 states and 15617 transitions. [2022-03-15 14:41:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-03-15 14:41:51,975 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:51,983 INFO L225 Difference]: With dead ends: 5557 [2022-03-15 14:41:51,983 INFO L226 Difference]: Without dead ends: 5482 [2022-03-15 14:41:51,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11280 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4217, Invalid=25195, Unknown=0, NotChecked=0, Total=29412 [2022-03-15 14:41:51,993 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 849 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:51,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 3130 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:41:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2022-03-15 14:41:52,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 3109. [2022-03-15 14:41:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3108 states have (on average 2.873873873873874) internal successors, (8932), 3108 states have internal predecessors, (8932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 8932 transitions. [2022-03-15 14:41:52,040 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 8932 transitions. Word has length 70 [2022-03-15 14:41:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:52,041 INFO L470 AbstractCegarLoop]: Abstraction has 3109 states and 8932 transitions. [2022-03-15 14:41:52,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3225806451612905) internal successors, (103), 31 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 8932 transitions. [2022-03-15 14:41:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:52,045 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:52,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:52,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:52,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-03-15 14:41:52,259 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash 503244363, now seen corresponding path program 58 times [2022-03-15 14:41:52,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:52,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414495519] [2022-03-15 14:41:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:52,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:52,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:52,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414495519] [2022-03-15 14:41:52,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414495519] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:52,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259283430] [2022-03-15 14:41:52,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:41:52,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:52,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:52,388 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:52,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-15 14:41:52,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:41:52,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:52,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 14:41:52,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:52,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:53,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259283430] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:53,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:53,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2022-03-15 14:41:53,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154544100] [2022-03-15 14:41:53,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:53,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 14:41:53,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:53,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 14:41:53,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-03-15 14:41:53,134 INFO L87 Difference]: Start difference. First operand 3109 states and 8932 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:56,294 INFO L93 Difference]: Finished difference Result 6141 states and 17233 transitions. [2022-03-15 14:41:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-03-15 14:41:56,294 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:56,304 INFO L225 Difference]: With dead ends: 6141 [2022-03-15 14:41:56,304 INFO L226 Difference]: Without dead ends: 6011 [2022-03-15 14:41:56,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2733, Invalid=15357, Unknown=0, NotChecked=0, Total=18090 [2022-03-15 14:41:56,306 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 760 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:56,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2750 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:41:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2022-03-15 14:41:56,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 3721. [2022-03-15 14:41:56,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3720 states have (on average 2.9115591397849463) internal successors, (10831), 3720 states have internal predecessors, (10831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 10831 transitions. [2022-03-15 14:41:56,365 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 10831 transitions. Word has length 70 [2022-03-15 14:41:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:56,365 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 10831 transitions. [2022-03-15 14:41:56,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 10831 transitions. [2022-03-15 14:41:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:56,370 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:56,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:56,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:56,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:56,575 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:56,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:56,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1460351023, now seen corresponding path program 59 times [2022-03-15 14:41:56,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:56,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883055031] [2022-03-15 14:41:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:56,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:56,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:56,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883055031] [2022-03-15 14:41:56,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883055031] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:56,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808173403] [2022-03-15 14:41:56,756 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:41:56,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:56,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:56,757 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:56,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-15 14:41:56,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:41:56,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:56,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:41:56,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:57,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:57,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808173403] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:41:57,450 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:41:57,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:41:57,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950797657] [2022-03-15 14:41:57,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:41:57,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:41:57,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:41:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:41:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:41:57,451 INFO L87 Difference]: Start difference. First operand 3721 states and 10831 transitions. Second operand has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:59,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:41:59,155 INFO L93 Difference]: Finished difference Result 5228 states and 15055 transitions. [2022-03-15 14:41:59,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-15 14:41:59,155 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:41:59,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:41:59,164 INFO L225 Difference]: With dead ends: 5228 [2022-03-15 14:41:59,164 INFO L226 Difference]: Without dead ends: 5121 [2022-03-15 14:41:59,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6140 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2789, Invalid=15033, Unknown=0, NotChecked=0, Total=17822 [2022-03-15 14:41:59,167 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 756 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 2779 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:41:59,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 2779 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:41:59,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5121 states. [2022-03-15 14:41:59,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5121 to 3585. [2022-03-15 14:41:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3584 states have (on average 2.914341517857143) internal successors, (10445), 3584 states have internal predecessors, (10445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 10445 transitions. [2022-03-15 14:41:59,227 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 10445 transitions. Word has length 70 [2022-03-15 14:41:59,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:41:59,227 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 10445 transitions. [2022-03-15 14:41:59,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:41:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 10445 transitions. [2022-03-15 14:41:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:41:59,232 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:41:59,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:41:59,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-15 14:41:59,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:59,448 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:41:59,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:41:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash -462444017, now seen corresponding path program 60 times [2022-03-15 14:41:59,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:41:59,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272838996] [2022-03-15 14:41:59,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:41:59,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:41:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:41:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:59,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:41:59,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272838996] [2022-03-15 14:41:59,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272838996] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:41:59,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848438403] [2022-03-15 14:41:59,574 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:41:59,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:41:59,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:41:59,576 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:41:59,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-15 14:41:59,655 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:41:59,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:41:59,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:41:59,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:41:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:41:59,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:00,269 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848438403] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:00,269 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:00,269 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-15 14:42:00,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677119444] [2022-03-15 14:42:00,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:00,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 14:42:00,269 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:00,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 14:42:00,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2022-03-15 14:42:00,270 INFO L87 Difference]: Start difference. First operand 3585 states and 10445 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:05,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:05,255 INFO L93 Difference]: Finished difference Result 7128 states and 20475 transitions. [2022-03-15 14:42:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-03-15 14:42:05,256 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:05,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:05,266 INFO L225 Difference]: With dead ends: 7128 [2022-03-15 14:42:05,267 INFO L226 Difference]: Without dead ends: 7039 [2022-03-15 14:42:05,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11748 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4597, Invalid=26203, Unknown=0, NotChecked=0, Total=30800 [2022-03-15 14:42:05,268 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1032 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:05,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 2319 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:05,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7039 states. [2022-03-15 14:42:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7039 to 4073. [2022-03-15 14:42:05,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4073 states, 4072 states have (on average 2.951620825147348) internal successors, (12019), 4072 states have internal predecessors, (12019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 12019 transitions. [2022-03-15 14:42:05,334 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 12019 transitions. Word has length 70 [2022-03-15 14:42:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:05,335 INFO L470 AbstractCegarLoop]: Abstraction has 4073 states and 12019 transitions. [2022-03-15 14:42:05,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 12019 transitions. [2022-03-15 14:42:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:05,340 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:05,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:05,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:05,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:05,550 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1519589779, now seen corresponding path program 61 times [2022-03-15 14:42:05,551 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:05,551 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83374499] [2022-03-15 14:42:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:05,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:05,663 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:05,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83374499] [2022-03-15 14:42:05,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83374499] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:05,663 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651570025] [2022-03-15 14:42:05,663 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:42:05,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:05,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:05,664 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:05,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-15 14:42:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:05,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:42:05,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:06,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:06,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651570025] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:06,390 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:06,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-03-15 14:42:06,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317376045] [2022-03-15 14:42:06,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:06,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 14:42:06,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:06,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 14:42:06,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2022-03-15 14:42:06,391 INFO L87 Difference]: Start difference. First operand 4073 states and 12019 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:11,516 INFO L93 Difference]: Finished difference Result 7825 states and 22614 transitions. [2022-03-15 14:42:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-15 14:42:11,519 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:11,532 INFO L225 Difference]: With dead ends: 7825 [2022-03-15 14:42:11,532 INFO L226 Difference]: Without dead ends: 7649 [2022-03-15 14:42:11,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10620 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4477, Invalid=22255, Unknown=0, NotChecked=0, Total=26732 [2022-03-15 14:42:11,534 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1213 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:11,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 2744 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2022-03-15 14:42:11,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 4581. [2022-03-15 14:42:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 4580 states have (on average 2.992139737991266) internal successors, (13704), 4580 states have internal predecessors, (13704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 13704 transitions. [2022-03-15 14:42:11,622 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 13704 transitions. Word has length 70 [2022-03-15 14:42:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:11,622 INFO L470 AbstractCegarLoop]: Abstraction has 4581 states and 13704 transitions. [2022-03-15 14:42:11,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 13704 transitions. [2022-03-15 14:42:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:11,628 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:11,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:11,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:11,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:11,844 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:11,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash -570575051, now seen corresponding path program 62 times [2022-03-15 14:42:11,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:11,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292938385] [2022-03-15 14:42:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:11,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:11,965 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:11,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292938385] [2022-03-15 14:42:11,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292938385] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:11,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99706244] [2022-03-15 14:42:11,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:42:11,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:11,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:11,967 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:11,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-15 14:42:12,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:42:12,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:12,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:42:12,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:12,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:12,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99706244] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:12,619 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:12,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2022-03-15 14:42:12,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591394529] [2022-03-15 14:42:12,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:12,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 14:42:12,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:12,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 14:42:12,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2022-03-15 14:42:12,620 INFO L87 Difference]: Start difference. First operand 4581 states and 13704 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:14,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:14,178 INFO L93 Difference]: Finished difference Result 5971 states and 17267 transitions. [2022-03-15 14:42:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-15 14:42:14,179 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:14,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:14,189 INFO L225 Difference]: With dead ends: 5971 [2022-03-15 14:42:14,189 INFO L226 Difference]: Without dead ends: 5812 [2022-03-15 14:42:14,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=925, Invalid=6385, Unknown=0, NotChecked=0, Total=7310 [2022-03-15 14:42:14,190 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 681 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:14,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 2503 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:42:14,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2022-03-15 14:42:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 4725. [2022-03-15 14:42:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 4724 states have (on average 2.988145639288738) internal successors, (14116), 4724 states have internal predecessors, (14116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 14116 transitions. [2022-03-15 14:42:14,270 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 14116 transitions. Word has length 70 [2022-03-15 14:42:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:14,270 INFO L470 AbstractCegarLoop]: Abstraction has 4725 states and 14116 transitions. [2022-03-15 14:42:14,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:14,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 14116 transitions. [2022-03-15 14:42:14,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:14,277 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:14,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:14,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:14,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:14,494 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:14,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:14,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1033019655, now seen corresponding path program 63 times [2022-03-15 14:42:14,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:14,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375896122] [2022-03-15 14:42:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:14,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:14,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:14,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375896122] [2022-03-15 14:42:14,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375896122] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:14,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707264361] [2022-03-15 14:42:14,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:42:14,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:14,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:14,606 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:14,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-15 14:42:14,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:42:14,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:14,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:42:14,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:14,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:14,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:15,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707264361] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:15,432 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:15,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 30 [2022-03-15 14:42:15,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884920875] [2022-03-15 14:42:15,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:15,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-15 14:42:15,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:15,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-15 14:42:15,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-03-15 14:42:15,433 INFO L87 Difference]: Start difference. First operand 4725 states and 14116 transitions. Second operand has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:17,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:17,673 INFO L93 Difference]: Finished difference Result 5987 states and 17326 transitions. [2022-03-15 14:42:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-15 14:42:17,674 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:17,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:17,683 INFO L225 Difference]: With dead ends: 5987 [2022-03-15 14:42:17,683 INFO L226 Difference]: Without dead ends: 5789 [2022-03-15 14:42:17,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 121 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2878 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1147, Invalid=7783, Unknown=0, NotChecked=0, Total=8930 [2022-03-15 14:42:17,684 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 578 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:17,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 2548 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:42:17,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2022-03-15 14:42:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 4749. [2022-03-15 14:42:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 4748 states have (on average 2.9869418702611625) internal successors, (14182), 4748 states have internal predecessors, (14182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 14182 transitions. [2022-03-15 14:42:17,765 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 14182 transitions. Word has length 70 [2022-03-15 14:42:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:17,765 INFO L470 AbstractCegarLoop]: Abstraction has 4749 states and 14182 transitions. [2022-03-15 14:42:17,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.4) internal successors, (102), 30 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 14182 transitions. [2022-03-15 14:42:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:17,771 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:17,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:17,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-03-15 14:42:17,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-03-15 14:42:17,977 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1148726773, now seen corresponding path program 64 times [2022-03-15 14:42:17,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:17,979 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68982994] [2022-03-15 14:42:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:17,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:18,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:18,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68982994] [2022-03-15 14:42:18,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68982994] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:18,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156871647] [2022-03-15 14:42:18,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:42:18,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:18,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:18,113 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:18,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-15 14:42:18,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:42:18,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:18,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 14:42:18,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:18,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:18,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156871647] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:18,716 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:18,716 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 28 [2022-03-15 14:42:18,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547913750] [2022-03-15 14:42:18,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:18,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-15 14:42:18,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:18,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-15 14:42:18,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2022-03-15 14:42:18,717 INFO L87 Difference]: Start difference. First operand 4749 states and 14182 transitions. Second operand has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:19,535 INFO L93 Difference]: Finished difference Result 5657 states and 16347 transitions. [2022-03-15 14:42:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:42:19,535 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:19,546 INFO L225 Difference]: With dead ends: 5657 [2022-03-15 14:42:19,546 INFO L226 Difference]: Without dead ends: 5558 [2022-03-15 14:42:19,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=562, Invalid=2518, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:42:19,551 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 504 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:19,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 2081 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:42:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2022-03-15 14:42:19,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 4749. [2022-03-15 14:42:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 4748 states have (on average 2.98441449031171) internal successors, (14170), 4748 states have internal predecessors, (14170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 14170 transitions. [2022-03-15 14:42:19,627 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 14170 transitions. Word has length 70 [2022-03-15 14:42:19,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:19,627 INFO L470 AbstractCegarLoop]: Abstraction has 4749 states and 14170 transitions. [2022-03-15 14:42:19,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.607142857142857) internal successors, (101), 28 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:19,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 14170 transitions. [2022-03-15 14:42:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:19,634 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:19,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:19,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:19,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:19,850 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:19,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:19,851 INFO L85 PathProgramCache]: Analyzing trace with hash -150819767, now seen corresponding path program 65 times [2022-03-15 14:42:19,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:19,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985804466] [2022-03-15 14:42:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:19,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:19,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:19,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985804466] [2022-03-15 14:42:19,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985804466] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:19,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618703703] [2022-03-15 14:42:19,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:42:19,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:19,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:19,989 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:19,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-15 14:42:20,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:42:20,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:20,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:42:20,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:20,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:42:20,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618703703] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:42:20,395 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:42:20,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-03-15 14:42:20,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578166882] [2022-03-15 14:42:20,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:42:20,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 14:42:20,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:20,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 14:42:20,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-03-15 14:42:20,396 INFO L87 Difference]: Start difference. First operand 4749 states and 14170 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:20,558 INFO L93 Difference]: Finished difference Result 4859 states and 14422 transitions. [2022-03-15 14:42:20,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 14:42:20,558 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:20,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:20,566 INFO L225 Difference]: With dead ends: 4859 [2022-03-15 14:42:20,566 INFO L226 Difference]: Without dead ends: 4781 [2022-03-15 14:42:20,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2022-03-15 14:42:20,566 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 126 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:20,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 830 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:42:20,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2022-03-15 14:42:20,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4713. [2022-03-15 14:42:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 4712 states have (on average 2.9887521222410864) internal successors, (14083), 4712 states have internal predecessors, (14083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 14083 transitions. [2022-03-15 14:42:20,619 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 14083 transitions. Word has length 70 [2022-03-15 14:42:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:20,619 INFO L470 AbstractCegarLoop]: Abstraction has 4713 states and 14083 transitions. [2022-03-15 14:42:20,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 14083 transitions. [2022-03-15 14:42:20,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:20,624 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:20,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:20,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:20,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2022-03-15 14:42:20,831 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:20,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2046055433, now seen corresponding path program 66 times [2022-03-15 14:42:20,832 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:20,832 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133707433] [2022-03-15 14:42:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:20,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:20,933 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:20,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133707433] [2022-03-15 14:42:20,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133707433] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:20,933 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504443255] [2022-03-15 14:42:20,933 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:42:20,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:20,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:20,935 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:20,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-15 14:42:21,083 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:42:21,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:21,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:42:21,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:21,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:21,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504443255] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:21,632 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:21,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-03-15 14:42:21,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599153630] [2022-03-15 14:42:21,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:21,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:42:21,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:21,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:42:21,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:42:21,633 INFO L87 Difference]: Start difference. First operand 4713 states and 14083 transitions. Second operand has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:23,933 INFO L93 Difference]: Finished difference Result 7586 states and 22120 transitions. [2022-03-15 14:42:23,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-15 14:42:23,933 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:23,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:23,947 INFO L225 Difference]: With dead ends: 7586 [2022-03-15 14:42:23,947 INFO L226 Difference]: Without dead ends: 7511 [2022-03-15 14:42:23,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3698 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1697, Invalid=9223, Unknown=0, NotChecked=0, Total=10920 [2022-03-15 14:42:23,949 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 553 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:23,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 2674 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:42:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7511 states. [2022-03-15 14:42:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7511 to 4793. [2022-03-15 14:42:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4793 states, 4792 states have (on average 2.9881051752921537) internal successors, (14319), 4792 states have internal predecessors, (14319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:24,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 14319 transitions. [2022-03-15 14:42:24,034 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 14319 transitions. Word has length 70 [2022-03-15 14:42:24,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:24,034 INFO L470 AbstractCegarLoop]: Abstraction has 4793 states and 14319 transitions. [2022-03-15 14:42:24,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:24,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 14319 transitions. [2022-03-15 14:42:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:24,040 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:24,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:24,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:24,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-03-15 14:42:24,260 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:24,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:24,261 INFO L85 PathProgramCache]: Analyzing trace with hash 461084739, now seen corresponding path program 67 times [2022-03-15 14:42:24,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:24,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604027046] [2022-03-15 14:42:24,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:24,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:24,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:24,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604027046] [2022-03-15 14:42:24,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604027046] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:24,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137645206] [2022-03-15 14:42:24,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:42:24,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:24,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:24,347 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:24,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-15 14:42:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:24,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:42:24,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:24,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:25,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137645206] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:25,126 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:25,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-03-15 14:42:25,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405673425] [2022-03-15 14:42:25,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:25,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:42:25,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:25,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:42:25,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:42:25,127 INFO L87 Difference]: Start difference. First operand 4793 states and 14319 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:27,950 INFO L93 Difference]: Finished difference Result 7564 states and 22088 transitions. [2022-03-15 14:42:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-15 14:42:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:27,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:27,963 INFO L225 Difference]: With dead ends: 7564 [2022-03-15 14:42:27,964 INFO L226 Difference]: Without dead ends: 7475 [2022-03-15 14:42:27,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3759 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1701, Invalid=9429, Unknown=0, NotChecked=0, Total=11130 [2022-03-15 14:42:27,964 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 522 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:27,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 3025 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:42:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7475 states. [2022-03-15 14:42:28,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7475 to 4857. [2022-03-15 14:42:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4857 states, 4856 states have (on average 2.985790774299835) internal successors, (14499), 4856 states have internal predecessors, (14499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 14499 transitions. [2022-03-15 14:42:28,038 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 14499 transitions. Word has length 70 [2022-03-15 14:42:28,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:28,039 INFO L470 AbstractCegarLoop]: Abstraction has 4857 states and 14499 transitions. [2022-03-15 14:42:28,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:28,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 14499 transitions. [2022-03-15 14:42:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:28,045 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:28,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:28,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:28,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-03-15 14:42:28,263 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash -825524207, now seen corresponding path program 68 times [2022-03-15 14:42:28,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:28,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625925737] [2022-03-15 14:42:28,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:28,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:28,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:28,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625925737] [2022-03-15 14:42:28,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625925737] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:28,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095923825] [2022-03-15 14:42:28,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:42:28,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:28,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:28,394 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:28,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-15 14:42:28,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:42:28,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:28,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:42:28,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:28,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:29,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095923825] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:29,231 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:29,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-03-15 14:42:29,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188699823] [2022-03-15 14:42:29,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:29,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:42:29,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:29,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:42:29,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:42:29,233 INFO L87 Difference]: Start difference. First operand 4857 states and 14499 transitions. Second operand has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:33,730 INFO L93 Difference]: Finished difference Result 8098 states and 23481 transitions. [2022-03-15 14:42:33,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-15 14:42:33,730 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:33,744 INFO L225 Difference]: With dead ends: 8098 [2022-03-15 14:42:33,744 INFO L226 Difference]: Without dead ends: 7875 [2022-03-15 14:42:33,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6149 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2252, Invalid=14778, Unknown=0, NotChecked=0, Total=17030 [2022-03-15 14:42:33,759 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 710 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:33,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 3275 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:42:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7875 states. [2022-03-15 14:42:33,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7875 to 4957. [2022-03-15 14:42:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4957 states, 4956 states have (on average 2.986682808716707) internal successors, (14802), 4956 states have internal predecessors, (14802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 14802 transitions. [2022-03-15 14:42:33,932 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 14802 transitions. Word has length 70 [2022-03-15 14:42:33,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:33,932 INFO L470 AbstractCegarLoop]: Abstraction has 4957 states and 14802 transitions. [2022-03-15 14:42:33,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.15625) internal successors, (101), 32 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 14802 transitions. [2022-03-15 14:42:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:33,938 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:33,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:33,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:34,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2022-03-15 14:42:34,151 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:34,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2090402133, now seen corresponding path program 69 times [2022-03-15 14:42:34,152 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:34,152 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197225622] [2022-03-15 14:42:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:34,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:34,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:34,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197225622] [2022-03-15 14:42:34,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197225622] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:34,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75945512] [2022-03-15 14:42:34,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:42:34,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:34,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:34,280 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:34,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-15 14:42:34,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:42:34,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:34,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:42:34,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:34,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:35,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75945512] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:35,096 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:35,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-15 14:42:35,097 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881349064] [2022-03-15 14:42:35,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:35,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 14:42:35,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:35,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 14:42:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 14:42:35,099 INFO L87 Difference]: Start difference. First operand 4957 states and 14802 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:36,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:36,850 INFO L93 Difference]: Finished difference Result 7085 states and 20759 transitions. [2022-03-15 14:42:36,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-15 14:42:36,851 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:36,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:36,863 INFO L225 Difference]: With dead ends: 7085 [2022-03-15 14:42:36,863 INFO L226 Difference]: Without dead ends: 6906 [2022-03-15 14:42:36,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2716 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1168, Invalid=7762, Unknown=0, NotChecked=0, Total=8930 [2022-03-15 14:42:36,864 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 500 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:36,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 2877 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:42:36,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6906 states. [2022-03-15 14:42:36,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6906 to 5181. [2022-03-15 14:42:36,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 2.9818532818532817) internal successors, (15446), 5180 states have internal predecessors, (15446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:36,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 15446 transitions. [2022-03-15 14:42:36,950 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 15446 transitions. Word has length 70 [2022-03-15 14:42:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:36,950 INFO L470 AbstractCegarLoop]: Abstraction has 5181 states and 15446 transitions. [2022-03-15 14:42:36,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 15446 transitions. [2022-03-15 14:42:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:36,957 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:36,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:36,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:37,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:37,171 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:37,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:37,171 INFO L85 PathProgramCache]: Analyzing trace with hash 947581475, now seen corresponding path program 70 times [2022-03-15 14:42:37,171 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:37,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671931143] [2022-03-15 14:42:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:37,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:37,266 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:37,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671931143] [2022-03-15 14:42:37,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671931143] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:37,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903565436] [2022-03-15 14:42:37,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:42:37,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:37,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:37,267 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:37,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-15 14:42:37,357 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:42:37,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:37,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:42:37,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:37,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:37,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903565436] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:37,815 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:37,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:42:37,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580102374] [2022-03-15 14:42:37,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:37,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:42:37,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:42:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:42:37,816 INFO L87 Difference]: Start difference. First operand 5181 states and 15446 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:39,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:39,779 INFO L93 Difference]: Finished difference Result 7732 states and 22695 transitions. [2022-03-15 14:42:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-15 14:42:39,779 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:39,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:39,792 INFO L225 Difference]: With dead ends: 7732 [2022-03-15 14:42:39,792 INFO L226 Difference]: Without dead ends: 7605 [2022-03-15 14:42:39,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4169 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1641, Invalid=10569, Unknown=0, NotChecked=0, Total=12210 [2022-03-15 14:42:39,793 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 681 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:39,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 2423 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:42:39,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2022-03-15 14:42:39,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 5229. [2022-03-15 14:42:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 2.9820198928844683) internal successors, (15590), 5228 states have internal predecessors, (15590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 15590 transitions. [2022-03-15 14:42:39,869 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 15590 transitions. Word has length 70 [2022-03-15 14:42:39,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:39,869 INFO L470 AbstractCegarLoop]: Abstraction has 5229 states and 15590 transitions. [2022-03-15 14:42:39,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:39,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 15590 transitions. [2022-03-15 14:42:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:39,875 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:39,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:39,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:40,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-03-15 14:42:40,090 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:40,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:40,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1340787411, now seen corresponding path program 71 times [2022-03-15 14:42:40,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:40,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762404019] [2022-03-15 14:42:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:40,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:40,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:40,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762404019] [2022-03-15 14:42:40,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762404019] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:40,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400595929] [2022-03-15 14:42:40,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:42:40,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:40,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:40,230 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:40,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-15 14:42:40,335 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:42:40,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:40,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:42:40,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:40,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:40,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400595929] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:40,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:40,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:42:40,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267812146] [2022-03-15 14:42:40,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:40,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:42:40,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:40,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:42:40,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:42:40,775 INFO L87 Difference]: Start difference. First operand 5229 states and 15590 transitions. Second operand has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:41,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:41,506 INFO L93 Difference]: Finished difference Result 7120 states and 21026 transitions. [2022-03-15 14:42:41,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 14:42:41,506 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:41,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:41,518 INFO L225 Difference]: With dead ends: 7120 [2022-03-15 14:42:41,518 INFO L226 Difference]: Without dead ends: 7057 [2022-03-15 14:42:41,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=582, Invalid=3324, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 14:42:41,519 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 430 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:41,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 2082 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:42:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2022-03-15 14:42:41,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 5293. [2022-03-15 14:42:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 2.9814814814814814) internal successors, (15778), 5292 states have internal predecessors, (15778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:41,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 15778 transitions. [2022-03-15 14:42:41,600 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 15778 transitions. Word has length 70 [2022-03-15 14:42:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:41,600 INFO L470 AbstractCegarLoop]: Abstraction has 5293 states and 15778 transitions. [2022-03-15 14:42:41,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.212121212121212) internal successors, (106), 33 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 15778 transitions. [2022-03-15 14:42:41,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:41,607 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:41,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:41,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-03-15 14:42:41,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-03-15 14:42:41,826 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:41,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1369209191, now seen corresponding path program 72 times [2022-03-15 14:42:41,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:41,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652067751] [2022-03-15 14:42:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:41,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:41,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:41,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652067751] [2022-03-15 14:42:41,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652067751] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:41,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750416237] [2022-03-15 14:42:41,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:42:41,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:41,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:41,939 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:41,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-15 14:42:42,060 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:42:42,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:42,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:42:42,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:42,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:42,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750416237] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:42,744 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:42,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:42:42,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980351425] [2022-03-15 14:42:42,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:42,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:42:42,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:42,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:42:42,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:42:42,745 INFO L87 Difference]: Start difference. First operand 5293 states and 15778 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:45,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:45,076 INFO L93 Difference]: Finished difference Result 8261 states and 24206 transitions. [2022-03-15 14:42:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-15 14:42:45,076 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:45,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:45,090 INFO L225 Difference]: With dead ends: 8261 [2022-03-15 14:42:45,090 INFO L226 Difference]: Without dead ends: 8172 [2022-03-15 14:42:45,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1226, Invalid=7146, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 14:42:45,091 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 436 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:45,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 2985 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:45,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8172 states. [2022-03-15 14:42:45,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8172 to 5485. [2022-03-15 14:42:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 5484 states have (on average 2.977753464624362) internal successors, (16330), 5484 states have internal predecessors, (16330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 16330 transitions. [2022-03-15 14:42:45,177 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 16330 transitions. Word has length 70 [2022-03-15 14:42:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:45,177 INFO L470 AbstractCegarLoop]: Abstraction has 5485 states and 16330 transitions. [2022-03-15 14:42:45,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 16330 transitions. [2022-03-15 14:42:45,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:45,183 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:45,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:45,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:45,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2022-03-15 14:42:45,399 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:45,400 INFO L85 PathProgramCache]: Analyzing trace with hash 82600245, now seen corresponding path program 73 times [2022-03-15 14:42:45,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:45,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667780419] [2022-03-15 14:42:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:45,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:45,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667780419] [2022-03-15 14:42:45,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667780419] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:45,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425991184] [2022-03-15 14:42:45,552 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:42:45,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:45,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:45,553 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:45,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-15 14:42:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:45,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:42:45,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:45,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:46,491 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425991184] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:46,491 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:46,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:42:46,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371591956] [2022-03-15 14:42:46,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:46,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:42:46,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:46,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:42:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:42:46,492 INFO L87 Difference]: Start difference. First operand 5485 states and 16330 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:49,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:49,251 INFO L93 Difference]: Finished difference Result 8548 states and 24902 transitions. [2022-03-15 14:42:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-15 14:42:49,251 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:49,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:49,262 INFO L225 Difference]: With dead ends: 8548 [2022-03-15 14:42:49,262 INFO L226 Difference]: Without dead ends: 8347 [2022-03-15 14:42:49,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3949 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1577, Invalid=10195, Unknown=0, NotChecked=0, Total=11772 [2022-03-15 14:42:49,263 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 543 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:49,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 3176 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8347 states. [2022-03-15 14:42:49,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8347 to 5393. [2022-03-15 14:42:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5393 states, 5392 states have (on average 2.9808976261127595) internal successors, (16073), 5392 states have internal predecessors, (16073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5393 states to 5393 states and 16073 transitions. [2022-03-15 14:42:49,336 INFO L78 Accepts]: Start accepts. Automaton has 5393 states and 16073 transitions. Word has length 70 [2022-03-15 14:42:49,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:49,336 INFO L470 AbstractCegarLoop]: Abstraction has 5393 states and 16073 transitions. [2022-03-15 14:42:49,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5393 states and 16073 transitions. [2022-03-15 14:42:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:49,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:49,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:49,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:49,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:49,562 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:49,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:49,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1855705927, now seen corresponding path program 74 times [2022-03-15 14:42:49,562 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:49,562 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686076453] [2022-03-15 14:42:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:49,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:49,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:49,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686076453] [2022-03-15 14:42:49,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686076453] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:49,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772765995] [2022-03-15 14:42:49,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:42:49,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:49,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:49,688 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:49,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-15 14:42:49,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:42:49,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:49,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:42:49,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:49,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:50,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772765995] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:50,311 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:50,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:42:50,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109063637] [2022-03-15 14:42:50,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:50,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:42:50,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:50,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:42:50,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:42:50,313 INFO L87 Difference]: Start difference. First operand 5393 states and 16073 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:53,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:53,475 INFO L93 Difference]: Finished difference Result 9391 states and 27767 transitions. [2022-03-15 14:42:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-15 14:42:53,475 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:53,493 INFO L225 Difference]: With dead ends: 9391 [2022-03-15 14:42:53,493 INFO L226 Difference]: Without dead ends: 9321 [2022-03-15 14:42:53,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4948 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2244, Invalid=11798, Unknown=0, NotChecked=0, Total=14042 [2022-03-15 14:42:53,510 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 579 mSDsluCounter, 2837 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:53,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 2834 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:42:53,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9321 states. [2022-03-15 14:42:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9321 to 5713. [2022-03-15 14:42:53,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5713 states, 5712 states have (on average 2.9903711484593836) internal successors, (17081), 5712 states have internal predecessors, (17081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 17081 transitions. [2022-03-15 14:42:53,695 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 17081 transitions. Word has length 70 [2022-03-15 14:42:53,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:53,695 INFO L470 AbstractCegarLoop]: Abstraction has 5713 states and 17081 transitions. [2022-03-15 14:42:53,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:53,696 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 17081 transitions. [2022-03-15 14:42:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:53,702 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:53,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:53,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:53,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:53,919 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:53,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:53,919 INFO L85 PathProgramCache]: Analyzing trace with hash 569096981, now seen corresponding path program 75 times [2022-03-15 14:42:53,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:53,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137613777] [2022-03-15 14:42:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:53,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:54,039 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:54,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137613777] [2022-03-15 14:42:54,039 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137613777] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:54,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515472850] [2022-03-15 14:42:54,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:42:54,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:54,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:54,041 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:54,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-15 14:42:54,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:42:54,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:54,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:42:54,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:54,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:42:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:54,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515472850] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:42:54,890 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:42:54,890 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-15 14:42:54,890 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679514720] [2022-03-15 14:42:54,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:42:54,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 14:42:54,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:42:54,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 14:42:54,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 14:42:54,891 INFO L87 Difference]: Start difference. First operand 5713 states and 17081 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:42:58,957 INFO L93 Difference]: Finished difference Result 10418 states and 30896 transitions. [2022-03-15 14:42:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-03-15 14:42:58,957 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:42:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:42:58,975 INFO L225 Difference]: With dead ends: 10418 [2022-03-15 14:42:58,975 INFO L226 Difference]: Without dead ends: 10211 [2022-03-15 14:42:58,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10590 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4077, Invalid=23979, Unknown=0, NotChecked=0, Total=28056 [2022-03-15 14:42:58,978 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 791 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:42:58,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 3545 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:42:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10211 states. [2022-03-15 14:42:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10211 to 6809. [2022-03-15 14:42:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6809 states, 6808 states have (on average 3.008078730904818) internal successors, (20479), 6808 states have internal predecessors, (20479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:59,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6809 states to 6809 states and 20479 transitions. [2022-03-15 14:42:59,142 INFO L78 Accepts]: Start accepts. Automaton has 6809 states and 20479 transitions. Word has length 70 [2022-03-15 14:42:59,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:42:59,142 INFO L470 AbstractCegarLoop]: Abstraction has 6809 states and 20479 transitions. [2022-03-15 14:42:59,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:42:59,142 INFO L276 IsEmpty]: Start isEmpty. Operand 6809 states and 20479 transitions. [2022-03-15 14:42:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:42:59,150 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:42:59,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:42:59,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-15 14:42:59,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-03-15 14:42:59,364 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:42:59,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:42:59,365 INFO L85 PathProgramCache]: Analyzing trace with hash -845833117, now seen corresponding path program 76 times [2022-03-15 14:42:59,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:42:59,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002848037] [2022-03-15 14:42:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:42:59,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:42:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:42:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:59,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:42:59,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002848037] [2022-03-15 14:42:59,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002848037] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:42:59,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589453935] [2022-03-15 14:42:59,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:42:59,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:42:59,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:42:59,480 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:42:59,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-15 14:42:59,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:42:59,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:42:59,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:42:59,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:42:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:42:59,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:00,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589453935] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:00,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:00,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:43:00,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375553615] [2022-03-15 14:43:00,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:00,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:00,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:00,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:00,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:00,277 INFO L87 Difference]: Start difference. First operand 6809 states and 20479 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:00,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:00,872 INFO L93 Difference]: Finished difference Result 8250 states and 24519 transitions. [2022-03-15 14:43:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:43:00,872 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:00,887 INFO L225 Difference]: With dead ends: 8250 [2022-03-15 14:43:00,887 INFO L226 Difference]: Without dead ends: 8187 [2022-03-15 14:43:00,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=496, Invalid=2810, Unknown=0, NotChecked=0, Total=3306 [2022-03-15 14:43:00,888 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 393 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:00,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 2449 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:43:00,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-03-15 14:43:01,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 6813. [2022-03-15 14:43:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6813 states, 6812 states have (on average 3.0079271873165) internal successors, (20490), 6812 states have internal predecessors, (20490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6813 states to 6813 states and 20490 transitions. [2022-03-15 14:43:01,036 INFO L78 Accepts]: Start accepts. Automaton has 6813 states and 20490 transitions. Word has length 70 [2022-03-15 14:43:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:01,036 INFO L470 AbstractCegarLoop]: Abstraction has 6813 states and 20490 transitions. [2022-03-15 14:43:01,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 6813 states and 20490 transitions. [2022-03-15 14:43:01,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:01,046 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:01,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:01,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:01,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:01,251 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:01,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:01,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1864163485, now seen corresponding path program 77 times [2022-03-15 14:43:01,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:01,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828145433] [2022-03-15 14:43:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:01,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:01,428 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:01,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828145433] [2022-03-15 14:43:01,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828145433] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:01,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132382849] [2022-03-15 14:43:01,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:43:01,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:01,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:01,429 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:01,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-15 14:43:01,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:43:01,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:01,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:43:01,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:01,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:02,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132382849] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:02,185 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:02,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:43:02,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855058627] [2022-03-15 14:43:02,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:02,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:02,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:02,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:02,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:02,186 INFO L87 Difference]: Start difference. First operand 6813 states and 20490 transitions. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:02,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:02,946 INFO L93 Difference]: Finished difference Result 8670 states and 25800 transitions. [2022-03-15 14:43:02,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 14:43:02,946 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:02,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:02,959 INFO L225 Difference]: With dead ends: 8670 [2022-03-15 14:43:02,959 INFO L226 Difference]: Without dead ends: 8592 [2022-03-15 14:43:02,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=629, Invalid=3531, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 14:43:02,960 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 324 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:02,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 1935 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:43:02,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2022-03-15 14:43:03,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 7069. [2022-03-15 14:43:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7069 states, 7068 states have (on average 2.999151103565365) internal successors, (21198), 7068 states have internal predecessors, (21198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:03,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 21198 transitions. [2022-03-15 14:43:03,060 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 21198 transitions. Word has length 70 [2022-03-15 14:43:03,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:03,060 INFO L470 AbstractCegarLoop]: Abstraction has 7069 states and 21198 transitions. [2022-03-15 14:43:03,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 21198 transitions. [2022-03-15 14:43:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:03,069 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:03,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:03,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:03,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:03,273 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:03,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:03,274 INFO L85 PathProgramCache]: Analyzing trace with hash -801486417, now seen corresponding path program 78 times [2022-03-15 14:43:03,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:03,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571221242] [2022-03-15 14:43:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:03,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:03,395 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:03,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571221242] [2022-03-15 14:43:03,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571221242] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:03,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468067955] [2022-03-15 14:43:03,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:43:03,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:03,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:03,396 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:03,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-15 14:43:03,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:43:03,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:03,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:03,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:03,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:04,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468067955] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:04,132 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:04,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:43:04,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150691018] [2022-03-15 14:43:04,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:04,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:04,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:04,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:04,133 INFO L87 Difference]: Start difference. First operand 7069 states and 21198 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:06,171 INFO L93 Difference]: Finished difference Result 9783 states and 28923 transitions. [2022-03-15 14:43:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-15 14:43:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:06,188 INFO L225 Difference]: With dead ends: 9783 [2022-03-15 14:43:06,188 INFO L226 Difference]: Without dead ends: 9557 [2022-03-15 14:43:06,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3056 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1259, Invalid=8641, Unknown=0, NotChecked=0, Total=9900 [2022-03-15 14:43:06,190 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 540 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:06,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 2823 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:43:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2022-03-15 14:43:06,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 7145. [2022-03-15 14:43:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 7144 states have (on average 2.9959406494960805) internal successors, (21403), 7144 states have internal predecessors, (21403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:06,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 21403 transitions. [2022-03-15 14:43:06,312 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 21403 transitions. Word has length 70 [2022-03-15 14:43:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:06,312 INFO L470 AbstractCegarLoop]: Abstraction has 7145 states and 21403 transitions. [2022-03-15 14:43:06,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:06,312 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 21403 transitions. [2022-03-15 14:43:06,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:06,321 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:06,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:06,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:06,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:06,537 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:06,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1944307075, now seen corresponding path program 79 times [2022-03-15 14:43:06,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:06,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760330113] [2022-03-15 14:43:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:06,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:06,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:06,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760330113] [2022-03-15 14:43:06,668 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760330113] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:06,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164515942] [2022-03-15 14:43:06,669 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:43:06,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:06,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:06,670 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:06,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-15 14:43:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:06,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:06,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:06,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:07,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164515942] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:07,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:07,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:43:07,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674435326] [2022-03-15 14:43:07,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:07,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:07,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:07,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:07,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:07,341 INFO L87 Difference]: Start difference. First operand 7145 states and 21403 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:10,418 INFO L93 Difference]: Finished difference Result 12364 states and 36685 transitions. [2022-03-15 14:43:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-15 14:43:10,418 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:10,442 INFO L225 Difference]: With dead ends: 12364 [2022-03-15 14:43:10,442 INFO L226 Difference]: Without dead ends: 12286 [2022-03-15 14:43:10,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6266 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2687, Invalid=14869, Unknown=0, NotChecked=0, Total=17556 [2022-03-15 14:43:10,444 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 618 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2806 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:10,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 2806 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:43:10,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12286 states. [2022-03-15 14:43:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12286 to 7585. [2022-03-15 14:43:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7585 states, 7584 states have (on average 3.0038238396624473) internal successors, (22781), 7584 states have internal predecessors, (22781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:10,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7585 states to 7585 states and 22781 transitions. [2022-03-15 14:43:10,593 INFO L78 Accepts]: Start accepts. Automaton has 7585 states and 22781 transitions. Word has length 70 [2022-03-15 14:43:10,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:10,593 INFO L470 AbstractCegarLoop]: Abstraction has 7585 states and 22781 transitions. [2022-03-15 14:43:10,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:10,593 INFO L276 IsEmpty]: Start isEmpty. Operand 7585 states and 22781 transitions. [2022-03-15 14:43:10,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:10,603 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:10,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:10,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-03-15 14:43:10,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-03-15 14:43:10,807 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1064051275, now seen corresponding path program 80 times [2022-03-15 14:43:10,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:10,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20343609] [2022-03-15 14:43:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:10,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:10,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:10,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20343609] [2022-03-15 14:43:10,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20343609] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:10,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392452931] [2022-03-15 14:43:10,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:43:10,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:10,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:10,929 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:10,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-15 14:43:11,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:43:11,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:11,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:11,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:11,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:11,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392452931] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:11,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:11,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:43:11,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579522638] [2022-03-15 14:43:11,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:11,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:11,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:11,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:11,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:11,703 INFO L87 Difference]: Start difference. First operand 7585 states and 22781 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:15,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:15,856 INFO L93 Difference]: Finished difference Result 13169 states and 38887 transitions. [2022-03-15 14:43:15,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-03-15 14:43:15,856 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:15,883 INFO L225 Difference]: With dead ends: 13169 [2022-03-15 14:43:15,883 INFO L226 Difference]: Without dead ends: 12961 [2022-03-15 14:43:15,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9122 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3474, Invalid=20706, Unknown=0, NotChecked=0, Total=24180 [2022-03-15 14:43:15,885 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 873 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:15,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2994 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2022-03-15 14:43:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 8545. [2022-03-15 14:43:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 8544 states have (on average 3.0038623595505616) internal successors, (25665), 8544 states have internal predecessors, (25665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:16,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 25665 transitions. [2022-03-15 14:43:16,070 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 25665 transitions. Word has length 70 [2022-03-15 14:43:16,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:16,070 INFO L470 AbstractCegarLoop]: Abstraction has 8545 states and 25665 transitions. [2022-03-15 14:43:16,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 25665 transitions. [2022-03-15 14:43:16,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:16,082 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:16,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:16,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:16,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-03-15 14:43:16,283 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1956750805, now seen corresponding path program 81 times [2022-03-15 14:43:16,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:16,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907266577] [2022-03-15 14:43:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:16,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:16,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:16,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907266577] [2022-03-15 14:43:16,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907266577] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:16,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084637876] [2022-03-15 14:43:16,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:43:16,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:16,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:16,404 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:16,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-15 14:43:16,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:43:16,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:16,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:16,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:16,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:17,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084637876] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:17,431 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:17,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:43:17,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988965991] [2022-03-15 14:43:17,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:17,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:17,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:17,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:17,432 INFO L87 Difference]: Start difference. First operand 8545 states and 25665 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:22,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:22,674 INFO L93 Difference]: Finished difference Result 15093 states and 44939 transitions. [2022-03-15 14:43:22,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-03-15 14:43:22,674 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:22,704 INFO L225 Difference]: With dead ends: 15093 [2022-03-15 14:43:22,704 INFO L226 Difference]: Without dead ends: 15004 [2022-03-15 14:43:22,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12633 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4476, Invalid=28466, Unknown=0, NotChecked=0, Total=32942 [2022-03-15 14:43:22,707 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 786 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:22,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 3099 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:43:22,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15004 states. [2022-03-15 14:43:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15004 to 8781. [2022-03-15 14:43:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8781 states, 8780 states have (on average 3.0093394077448745) internal successors, (26422), 8780 states have internal predecessors, (26422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8781 states to 8781 states and 26422 transitions. [2022-03-15 14:43:22,904 INFO L78 Accepts]: Start accepts. Automaton has 8781 states and 26422 transitions. Word has length 70 [2022-03-15 14:43:22,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:22,905 INFO L470 AbstractCegarLoop]: Abstraction has 8781 states and 26422 transitions. [2022-03-15 14:43:22,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:22,905 INFO L276 IsEmpty]: Start isEmpty. Operand 8781 states and 26422 transitions. [2022-03-15 14:43:22,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:22,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:22,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:22,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-03-15 14:43:23,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-03-15 14:43:23,123 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1791018719, now seen corresponding path program 82 times [2022-03-15 14:43:23,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:23,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636143870] [2022-03-15 14:43:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:23,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:23,228 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:23,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636143870] [2022-03-15 14:43:23,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636143870] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:23,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489096001] [2022-03-15 14:43:23,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:43:23,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:23,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:23,229 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:23,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-15 14:43:23,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:43:23,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:23,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:43:23,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:23,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:23,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489096001] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:23,812 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:23,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:43:23,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583071215] [2022-03-15 14:43:23,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:23,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:23,813 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:23,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:23,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:23,813 INFO L87 Difference]: Start difference. First operand 8781 states and 26422 transitions. Second operand has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:24,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:24,933 INFO L93 Difference]: Finished difference Result 11574 states and 34306 transitions. [2022-03-15 14:43:24,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-15 14:43:24,934 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:24,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:24,955 INFO L225 Difference]: With dead ends: 11574 [2022-03-15 14:43:24,955 INFO L226 Difference]: Without dead ends: 11499 [2022-03-15 14:43:24,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2256 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1028, Invalid=6112, Unknown=0, NotChecked=0, Total=7140 [2022-03-15 14:43:24,957 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 574 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:24,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2680 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:43:24,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11499 states. [2022-03-15 14:43:25,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11499 to 8805. [2022-03-15 14:43:25,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8805 states, 8804 states have (on average 3.008632439800091) internal successors, (26488), 8804 states have internal predecessors, (26488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8805 states to 8805 states and 26488 transitions. [2022-03-15 14:43:25,123 INFO L78 Accepts]: Start accepts. Automaton has 8805 states and 26488 transitions. Word has length 70 [2022-03-15 14:43:25,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:25,124 INFO L470 AbstractCegarLoop]: Abstraction has 8805 states and 26488 transitions. [2022-03-15 14:43:25,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.484848484848485) internal successors, (115), 33 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 8805 states and 26488 transitions. [2022-03-15 14:43:25,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:25,136 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:25,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:25,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:25,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-03-15 14:43:25,353 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:25,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:25,353 INFO L85 PathProgramCache]: Analyzing trace with hash 206048025, now seen corresponding path program 83 times [2022-03-15 14:43:25,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:25,354 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013094096] [2022-03-15 14:43:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:25,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:25,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:25,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013094096] [2022-03-15 14:43:25,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013094096] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:25,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772126334] [2022-03-15 14:43:25,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:43:25,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:25,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:25,498 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:25,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-15 14:43:25,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:43:25,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:25,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:43:25,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:25,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:26,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772126334] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:26,191 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:26,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:43:26,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265845084] [2022-03-15 14:43:26,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:26,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:26,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:26,192 INFO L87 Difference]: Start difference. First operand 8805 states and 26488 transitions. Second operand has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:27,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:27,429 INFO L93 Difference]: Finished difference Result 11718 states and 35118 transitions. [2022-03-15 14:43:27,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-15 14:43:27,429 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:27,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:27,448 INFO L225 Difference]: With dead ends: 11718 [2022-03-15 14:43:27,448 INFO L226 Difference]: Without dead ends: 11640 [2022-03-15 14:43:27,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2026 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1075, Invalid=5405, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 14:43:27,449 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 386 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:27,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1985 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:43:27,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2022-03-15 14:43:27,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 8957. [2022-03-15 14:43:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8957 states, 8956 states have (on average 3.014068780705672) internal successors, (26994), 8956 states have internal predecessors, (26994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 26994 transitions. [2022-03-15 14:43:27,594 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 26994 transitions. Word has length 70 [2022-03-15 14:43:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:27,594 INFO L470 AbstractCegarLoop]: Abstraction has 8957 states and 26994 transitions. [2022-03-15 14:43:27,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1515151515151514) internal successors, (104), 33 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 26994 transitions. [2022-03-15 14:43:27,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:27,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:27,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:27,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:27,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:27,823 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1835365419, now seen corresponding path program 84 times [2022-03-15 14:43:27,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:27,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889138695] [2022-03-15 14:43:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:27,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:27,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:27,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889138695] [2022-03-15 14:43:27,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889138695] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:27,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131386742] [2022-03-15 14:43:27,945 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:43:27,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:27,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:27,946 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:27,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-15 14:43:28,042 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:43:28,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:28,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:28,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:28,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:28,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131386742] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:28,615 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:28,615 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:43:28,615 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248630134] [2022-03-15 14:43:28,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:28,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:28,615 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:28,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:28,616 INFO L87 Difference]: Start difference. First operand 8957 states and 26994 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:32,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:32,288 INFO L93 Difference]: Finished difference Result 12589 states and 37341 transitions. [2022-03-15 14:43:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-15 14:43:32,288 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:32,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:32,309 INFO L225 Difference]: With dead ends: 12589 [2022-03-15 14:43:32,309 INFO L226 Difference]: Without dead ends: 12363 [2022-03-15 14:43:32,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6416 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2449, Invalid=15373, Unknown=0, NotChecked=0, Total=17822 [2022-03-15 14:43:32,310 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 755 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:32,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2810 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:32,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12363 states. [2022-03-15 14:43:32,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12363 to 9093. [2022-03-15 14:43:32,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9093 states, 9092 states have (on average 3.0153981522217332) internal successors, (27416), 9092 states have internal predecessors, (27416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9093 states to 9093 states and 27416 transitions. [2022-03-15 14:43:32,460 INFO L78 Accepts]: Start accepts. Automaton has 9093 states and 27416 transitions. Word has length 70 [2022-03-15 14:43:32,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:32,460 INFO L470 AbstractCegarLoop]: Abstraction has 9093 states and 27416 transitions. [2022-03-15 14:43:32,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:32,460 INFO L276 IsEmpty]: Start isEmpty. Operand 9093 states and 27416 transitions. [2022-03-15 14:43:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:32,472 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:32,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:32,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:32,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:32,678 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:32,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:32,678 INFO L85 PathProgramCache]: Analyzing trace with hash 692544761, now seen corresponding path program 85 times [2022-03-15 14:43:32,678 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:32,678 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006042401] [2022-03-15 14:43:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:32,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:32,784 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:32,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006042401] [2022-03-15 14:43:32,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006042401] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:32,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133237633] [2022-03-15 14:43:32,784 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:43:32,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:32,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:32,786 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:32,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-15 14:43:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:32,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:32,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:33,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:33,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133237633] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:33,634 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:33,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:43:33,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156349076] [2022-03-15 14:43:33,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:33,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:33,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:33,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:33,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:33,635 INFO L87 Difference]: Start difference. First operand 9093 states and 27416 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:36,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:36,477 INFO L93 Difference]: Finished difference Result 13905 states and 41521 transitions. [2022-03-15 14:43:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-15 14:43:36,478 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:36,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:36,503 INFO L225 Difference]: With dead ends: 13905 [2022-03-15 14:43:36,503 INFO L226 Difference]: Without dead ends: 13819 [2022-03-15 14:43:36,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6479 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3010, Invalid=14546, Unknown=0, NotChecked=0, Total=17556 [2022-03-15 14:43:36,505 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 748 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:36,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 2531 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:43:36,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13819 states. [2022-03-15 14:43:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13819 to 9969. [2022-03-15 14:43:36,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 3.0217696629213484) internal successors, (30121), 9968 states have internal predecessors, (30121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 30121 transitions. [2022-03-15 14:43:36,728 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 30121 transitions. Word has length 70 [2022-03-15 14:43:36,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:36,728 INFO L470 AbstractCegarLoop]: Abstraction has 9969 states and 30121 transitions. [2022-03-15 14:43:36,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:36,729 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 30121 transitions. [2022-03-15 14:43:36,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:36,742 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:36,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:36,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:36,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2022-03-15 14:43:36,959 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash 680101031, now seen corresponding path program 86 times [2022-03-15 14:43:36,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:36,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101310663] [2022-03-15 14:43:36,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:36,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:37,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:37,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101310663] [2022-03-15 14:43:37,043 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101310663] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:37,043 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590023602] [2022-03-15 14:43:37,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:43:37,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:37,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:37,044 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:37,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-15 14:43:37,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:43:37,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:37,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:37,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:37,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:37,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590023602] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:37,676 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:37,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:43:37,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379365945] [2022-03-15 14:43:37,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:37,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:37,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:37,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:37,677 INFO L87 Difference]: Start difference. First operand 9969 states and 30121 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:40,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:40,916 INFO L93 Difference]: Finished difference Result 16134 states and 48531 transitions. [2022-03-15 14:43:40,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-03-15 14:43:40,916 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:40,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:40,947 INFO L225 Difference]: With dead ends: 16134 [2022-03-15 14:43:40,947 INFO L226 Difference]: Without dead ends: 16045 [2022-03-15 14:43:40,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6718 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3044, Invalid=15316, Unknown=0, NotChecked=0, Total=18360 [2022-03-15 14:43:40,949 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 862 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:40,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 3033 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:40,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16045 states. [2022-03-15 14:43:41,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16045 to 10725. [2022-03-15 14:43:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10725 states, 10724 states have (on average 3.0365535248041775) internal successors, (32564), 10724 states have internal predecessors, (32564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10725 states to 10725 states and 32564 transitions. [2022-03-15 14:43:41,149 INFO L78 Accepts]: Start accepts. Automaton has 10725 states and 32564 transitions. Word has length 70 [2022-03-15 14:43:41,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:41,149 INFO L470 AbstractCegarLoop]: Abstraction has 10725 states and 32564 transitions. [2022-03-15 14:43:41,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 10725 states and 32564 transitions. [2022-03-15 14:43:41,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:41,163 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:41,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:41,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-03-15 14:43:41,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:41,379 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash -86569393, now seen corresponding path program 87 times [2022-03-15 14:43:41,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:41,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862906246] [2022-03-15 14:43:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:41,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:41,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:41,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862906246] [2022-03-15 14:43:41,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862906246] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:41,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270725145] [2022-03-15 14:43:41,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:43:41,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:41,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:41,493 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:41,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-15 14:43:41,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:43:41,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:41,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:41,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:41,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:42,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270725145] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:42,433 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:42,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-15 14:43:42,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547636503] [2022-03-15 14:43:42,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:42,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 14:43:42,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:42,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 14:43:42,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 14:43:42,434 INFO L87 Difference]: Start difference. First operand 10725 states and 32564 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:43,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:43,666 INFO L93 Difference]: Finished difference Result 12758 states and 38181 transitions. [2022-03-15 14:43:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-15 14:43:43,667 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:43,688 INFO L225 Difference]: With dead ends: 12758 [2022-03-15 14:43:43,689 INFO L226 Difference]: Without dead ends: 12583 [2022-03-15 14:43:43,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1787 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=765, Invalid=5397, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 14:43:43,689 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 483 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:43,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 2435 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:43:43,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12583 states. [2022-03-15 14:43:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12583 to 11021. [2022-03-15 14:43:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11021 states, 11020 states have (on average 3.0339382940108894) internal successors, (33434), 11020 states have internal predecessors, (33434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:43,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11021 states to 11021 states and 33434 transitions. [2022-03-15 14:43:43,854 INFO L78 Accepts]: Start accepts. Automaton has 11021 states and 33434 transitions. Word has length 70 [2022-03-15 14:43:43,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:43,855 INFO L470 AbstractCegarLoop]: Abstraction has 11021 states and 33434 transitions. [2022-03-15 14:43:43,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:43,855 INFO L276 IsEmpty]: Start isEmpty. Operand 11021 states and 33434 transitions. [2022-03-15 14:43:43,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:43,869 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:43,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:43,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:44,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:44,087 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:44,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:44,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1525183769, now seen corresponding path program 88 times [2022-03-15 14:43:44,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:44,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33247826] [2022-03-15 14:43:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:44,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:44,219 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:44,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33247826] [2022-03-15 14:43:44,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33247826] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:44,219 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646661268] [2022-03-15 14:43:44,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:43:44,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:44,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:44,220 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:44,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-15 14:43:44,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:43:44,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:44,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:43:44,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:44,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:44,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646661268] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:44,861 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:44,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:43:44,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755193927] [2022-03-15 14:43:44,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:44,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:43:44,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:44,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:43:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:43:44,862 INFO L87 Difference]: Start difference. First operand 11021 states and 33434 transitions. Second operand has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:45,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:45,727 INFO L93 Difference]: Finished difference Result 12477 states and 37314 transitions. [2022-03-15 14:43:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:43:45,728 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:45,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:45,746 INFO L225 Difference]: With dead ends: 12477 [2022-03-15 14:43:45,747 INFO L226 Difference]: Without dead ends: 12281 [2022-03-15 14:43:45,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=3254, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 14:43:45,747 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 529 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:45,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 2264 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:43:45,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12281 states. [2022-03-15 14:43:45,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12281 to 11017. [2022-03-15 14:43:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11017 states, 11016 states have (on average 3.034041394335512) internal successors, (33423), 11016 states have internal predecessors, (33423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11017 states to 11017 states and 33423 transitions. [2022-03-15 14:43:45,905 INFO L78 Accepts]: Start accepts. Automaton has 11017 states and 33423 transitions. Word has length 70 [2022-03-15 14:43:45,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:45,905 INFO L470 AbstractCegarLoop]: Abstraction has 11017 states and 33423 transitions. [2022-03-15 14:43:45,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.4242424242424243) internal successors, (113), 33 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand 11017 states and 33423 transitions. [2022-03-15 14:43:45,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:45,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:45,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:45,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:46,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:46,135 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:46,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:46,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1281105169, now seen corresponding path program 89 times [2022-03-15 14:43:46,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:46,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72637385] [2022-03-15 14:43:46,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:46,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:46,253 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:46,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72637385] [2022-03-15 14:43:46,253 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72637385] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:46,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460285936] [2022-03-15 14:43:46,253 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:43:46,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:46,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:46,254 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:46,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-15 14:43:46,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:43:46,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:46,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:46,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:46,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:46,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460285936] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:46,996 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:46,996 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:43:46,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046498642] [2022-03-15 14:43:46,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:46,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:43:46,996 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:43:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:43:46,997 INFO L87 Difference]: Start difference. First operand 11017 states and 33423 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:48,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:48,137 INFO L93 Difference]: Finished difference Result 17317 states and 52070 transitions. [2022-03-15 14:43:48,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 14:43:48,137 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:48,249 INFO L225 Difference]: With dead ends: 17317 [2022-03-15 14:43:48,249 INFO L226 Difference]: Without dead ends: 17131 [2022-03-15 14:43:48,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=827, Invalid=5653, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 14:43:48,249 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 460 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:48,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 2436 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:43:48,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17131 states. [2022-03-15 14:43:48,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17131 to 11697. [2022-03-15 14:43:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11697 states, 11696 states have (on average 3.031207250341997) internal successors, (35453), 11696 states have internal predecessors, (35453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11697 states to 11697 states and 35453 transitions. [2022-03-15 14:43:48,432 INFO L78 Accepts]: Start accepts. Automaton has 11697 states and 35453 transitions. Word has length 70 [2022-03-15 14:43:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:48,432 INFO L470 AbstractCegarLoop]: Abstraction has 11697 states and 35453 transitions. [2022-03-15 14:43:48,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 11697 states and 35453 transitions. [2022-03-15 14:43:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:48,448 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:48,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:48,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:48,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2022-03-15 14:43:48,664 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:48,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:48,665 INFO L85 PathProgramCache]: Analyzing trace with hash -360508537, now seen corresponding path program 90 times [2022-03-15 14:43:48,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:48,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692563956] [2022-03-15 14:43:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:48,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:48,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:48,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692563956] [2022-03-15 14:43:48,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692563956] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:48,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592664575] [2022-03-15 14:43:48,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:43:48,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:48,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:48,836 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:48,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-15 14:43:48,936 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:43:48,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:48,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:48,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:49,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:49,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592664575] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:49,710 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:49,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-15 14:43:49,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947982329] [2022-03-15 14:43:49,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:49,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 14:43:49,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:49,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 14:43:49,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 14:43:49,711 INFO L87 Difference]: Start difference. First operand 11697 states and 35453 transitions. Second operand has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:52,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:52,108 INFO L93 Difference]: Finished difference Result 15500 states and 46196 transitions. [2022-03-15 14:43:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-15 14:43:52,108 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:52,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:52,137 INFO L225 Difference]: With dead ends: 15500 [2022-03-15 14:43:52,137 INFO L226 Difference]: Without dead ends: 15425 [2022-03-15 14:43:52,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2712 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1270, Invalid=7850, Unknown=0, NotChecked=0, Total=9120 [2022-03-15 14:43:52,138 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 514 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:52,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 3155 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:43:52,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15425 states. [2022-03-15 14:43:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15425 to 12397. [2022-03-15 14:43:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12397 states, 12396 states have (on average 3.0450145208131656) internal successors, (37746), 12396 states have internal predecessors, (37746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:52,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 37746 transitions. [2022-03-15 14:43:52,363 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 37746 transitions. Word has length 70 [2022-03-15 14:43:52,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:52,364 INFO L470 AbstractCegarLoop]: Abstraction has 12397 states and 37746 transitions. [2022-03-15 14:43:52,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.942857142857143) internal successors, (103), 35 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:52,364 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 37746 transitions. [2022-03-15 14:43:52,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:52,382 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:52,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:52,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:52,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-03-15 14:43:52,598 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:52,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:52,599 INFO L85 PathProgramCache]: Analyzing trace with hash -398905281, now seen corresponding path program 91 times [2022-03-15 14:43:52,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:52,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951594331] [2022-03-15 14:43:52,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:52,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:52,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:52,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951594331] [2022-03-15 14:43:52,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951594331] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:52,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105288253] [2022-03-15 14:43:52,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:43:52,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:52,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:52,728 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:52,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-15 14:43:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:52,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:52,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:53,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:53,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105288253] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:53,458 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:53,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:43:53,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978629941] [2022-03-15 14:43:53,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:53,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:43:53,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:53,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:43:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:43:53,459 INFO L87 Difference]: Start difference. First operand 12397 states and 37746 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:55,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:55,231 INFO L93 Difference]: Finished difference Result 18209 states and 54741 transitions. [2022-03-15 14:43:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 14:43:55,231 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:55,272 INFO L225 Difference]: With dead ends: 18209 [2022-03-15 14:43:55,272 INFO L226 Difference]: Without dead ends: 18069 [2022-03-15 14:43:55,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=867, Invalid=5139, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 14:43:55,273 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 475 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:55,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 2408 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:43:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18069 states. [2022-03-15 14:43:55,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18069 to 12569. [2022-03-15 14:43:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12569 states, 12568 states have (on average 3.044796308084023) internal successors, (38267), 12568 states have internal predecessors, (38267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12569 states to 12569 states and 38267 transitions. [2022-03-15 14:43:55,554 INFO L78 Accepts]: Start accepts. Automaton has 12569 states and 38267 transitions. Word has length 70 [2022-03-15 14:43:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:55,554 INFO L470 AbstractCegarLoop]: Abstraction has 12569 states and 38267 transitions. [2022-03-15 14:43:55,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:55,555 INFO L276 IsEmpty]: Start isEmpty. Operand 12569 states and 38267 transitions. [2022-03-15 14:43:55,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:55,574 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:55,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:55,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:55,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-03-15 14:43:55,787 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:55,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:55,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1458757001, now seen corresponding path program 92 times [2022-03-15 14:43:55,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:55,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905895858] [2022-03-15 14:43:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:55,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:55,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:55,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905895858] [2022-03-15 14:43:55,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905895858] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:55,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882622936] [2022-03-15 14:43:55,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:43:55,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:55,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:55,952 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:55,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-15 14:43:56,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:43:56,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:56,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:56,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:56,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:43:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:56,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882622936] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:43:56,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:43:56,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:43:56,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981524086] [2022-03-15 14:43:56,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:43:56,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:43:56,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:43:56,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:43:56,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:43:56,804 INFO L87 Difference]: Start difference. First operand 12569 states and 38267 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:43:58,890 INFO L93 Difference]: Finished difference Result 19261 states and 57956 transitions. [2022-03-15 14:43:58,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-03-15 14:43:58,890 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:43:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:43:58,925 INFO L225 Difference]: With dead ends: 19261 [2022-03-15 14:43:58,925 INFO L226 Difference]: Without dead ends: 19135 [2022-03-15 14:43:58,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4541 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1898, Invalid=10984, Unknown=0, NotChecked=0, Total=12882 [2022-03-15 14:43:58,928 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 639 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:43:58,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 2158 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:43:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19135 states. [2022-03-15 14:43:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19135 to 12745. [2022-03-15 14:43:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12745 states, 12744 states have (on average 3.045433145009416) internal successors, (38811), 12744 states have internal predecessors, (38811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:59,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 38811 transitions. [2022-03-15 14:43:59,194 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 38811 transitions. Word has length 70 [2022-03-15 14:43:59,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:43:59,194 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 38811 transitions. [2022-03-15 14:43:59,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:43:59,194 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 38811 transitions. [2022-03-15 14:43:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:43:59,214 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:43:59,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:43:59,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:59,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:59,431 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:43:59,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:43:59,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1497153745, now seen corresponding path program 93 times [2022-03-15 14:43:59,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:43:59,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123152888] [2022-03-15 14:43:59,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:43:59,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:43:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:43:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:59,520 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:43:59,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123152888] [2022-03-15 14:43:59,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123152888] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:43:59,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057767660] [2022-03-15 14:43:59,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:43:59,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:59,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:43:59,521 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:43:59,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-15 14:43:59,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:43:59,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:43:59,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:43:59,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:43:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:43:59,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:00,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057767660] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:00,320 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:00,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:00,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164720546] [2022-03-15 14:44:00,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:00,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:00,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:00,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:00,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:00,321 INFO L87 Difference]: Start difference. First operand 12745 states and 38811 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:02,522 INFO L93 Difference]: Finished difference Result 19613 states and 58886 transitions. [2022-03-15 14:44:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-03-15 14:44:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:02,558 INFO L225 Difference]: With dead ends: 19613 [2022-03-15 14:44:02,558 INFO L226 Difference]: Without dead ends: 19473 [2022-03-15 14:44:02,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4382 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1988, Invalid=10668, Unknown=0, NotChecked=0, Total=12656 [2022-03-15 14:44:02,560 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 586 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:02,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 2694 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:02,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19473 states. [2022-03-15 14:44:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19473 to 12769. [2022-03-15 14:44:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12769 states, 12768 states have (on average 3.045817669172932) internal successors, (38889), 12768 states have internal predecessors, (38889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12769 states to 12769 states and 38889 transitions. [2022-03-15 14:44:02,828 INFO L78 Accepts]: Start accepts. Automaton has 12769 states and 38889 transitions. Word has length 70 [2022-03-15 14:44:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:02,828 INFO L470 AbstractCegarLoop]: Abstraction has 12769 states and 38889 transitions. [2022-03-15 14:44:02,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:02,828 INFO L276 IsEmpty]: Start isEmpty. Operand 12769 states and 38889 transitions. [2022-03-15 14:44:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:02,846 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:02,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:02,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:03,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-03-15 14:44:03,063 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:03,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:03,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1832125171, now seen corresponding path program 94 times [2022-03-15 14:44:03,063 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:03,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014411479] [2022-03-15 14:44:03,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:03,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:03,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:03,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014411479] [2022-03-15 14:44:03,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014411479] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:03,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95328570] [2022-03-15 14:44:03,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:44:03,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:03,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:03,175 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:03,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-15 14:44:03,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:44:03,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:03,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:44:03,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:03,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:03,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95328570] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:03,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:03,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:44:03,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339949613] [2022-03-15 14:44:03,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:03,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:44:03,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:03,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:44:03,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:44:03,924 INFO L87 Difference]: Start difference. First operand 12769 states and 38889 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:05,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:05,220 INFO L93 Difference]: Finished difference Result 17008 states and 51265 transitions. [2022-03-15 14:44:05,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-15 14:44:05,220 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:05,259 INFO L225 Difference]: With dead ends: 17008 [2022-03-15 14:44:05,259 INFO L226 Difference]: Without dead ends: 16868 [2022-03-15 14:44:05,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1488, Invalid=7824, Unknown=0, NotChecked=0, Total=9312 [2022-03-15 14:44:05,260 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 496 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:05,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 2863 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:05,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16868 states. [2022-03-15 14:44:05,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16868 to 13465. [2022-03-15 14:44:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13465 states, 13464 states have (on average 3.05102495543672) internal successors, (41079), 13464 states have internal predecessors, (41079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13465 states to 13465 states and 41079 transitions. [2022-03-15 14:44:05,553 INFO L78 Accepts]: Start accepts. Automaton has 13465 states and 41079 transitions. Word has length 70 [2022-03-15 14:44:05,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:05,553 INFO L470 AbstractCegarLoop]: Abstraction has 13465 states and 41079 transitions. [2022-03-15 14:44:05,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand 13465 states and 41079 transitions. [2022-03-15 14:44:05,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:05,575 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:05,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:05,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:05,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-03-15 14:44:05,791 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash -480808329, now seen corresponding path program 95 times [2022-03-15 14:44:05,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:05,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789509514] [2022-03-15 14:44:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:05,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:05,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:05,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789509514] [2022-03-15 14:44:05,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789509514] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:05,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6144672] [2022-03-15 14:44:05,895 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:44:05,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:05,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:05,896 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:05,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-15 14:44:06,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:44:06,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:06,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:44:06,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:06,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:06,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6144672] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:06,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:06,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:44:06,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260075798] [2022-03-15 14:44:06,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:06,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:44:06,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:06,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:44:06,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:44:06,539 INFO L87 Difference]: Start difference. First operand 13465 states and 41079 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:07,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:07,535 INFO L93 Difference]: Finished difference Result 16291 states and 49496 transitions. [2022-03-15 14:44:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:44:07,536 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:07,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:07,566 INFO L225 Difference]: With dead ends: 16291 [2022-03-15 14:44:07,566 INFO L226 Difference]: Without dead ends: 16187 [2022-03-15 14:44:07,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=979, Invalid=3991, Unknown=0, NotChecked=0, Total=4970 [2022-03-15 14:44:07,567 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 491 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:07,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 2226 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:44:07,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16187 states. [2022-03-15 14:44:07,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16187 to 11569. [2022-03-15 14:44:07,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11569 states, 11568 states have (on average 3.0426175656984786) internal successors, (35197), 11568 states have internal predecessors, (35197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11569 states to 11569 states and 35197 transitions. [2022-03-15 14:44:07,831 INFO L78 Accepts]: Start accepts. Automaton has 11569 states and 35197 transitions. Word has length 70 [2022-03-15 14:44:07,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:07,832 INFO L470 AbstractCegarLoop]: Abstraction has 11569 states and 35197 transitions. [2022-03-15 14:44:07,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 11569 states and 35197 transitions. [2022-03-15 14:44:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:07,848 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:07,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:07,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:08,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2022-03-15 14:44:08,051 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:08,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1145842415, now seen corresponding path program 96 times [2022-03-15 14:44:08,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:08,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716701486] [2022-03-15 14:44:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:08,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:08,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:08,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716701486] [2022-03-15 14:44:08,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716701486] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:08,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420290252] [2022-03-15 14:44:08,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:44:08,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:08,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:08,183 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:08,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-15 14:44:08,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:44:08,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:08,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:44:08,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:08,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:09,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420290252] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:09,109 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:09,109 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:09,109 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759220222] [2022-03-15 14:44:09,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:09,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:09,110 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:09,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:09,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:09,110 INFO L87 Difference]: Start difference. First operand 11569 states and 35197 transitions. Second operand has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:10,914 INFO L93 Difference]: Finished difference Result 17131 states and 51397 transitions. [2022-03-15 14:44:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-15 14:44:10,914 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:10,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:10,946 INFO L225 Difference]: With dead ends: 17131 [2022-03-15 14:44:10,946 INFO L226 Difference]: Without dead ends: 17005 [2022-03-15 14:44:10,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3029 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1312, Invalid=7808, Unknown=0, NotChecked=0, Total=9120 [2022-03-15 14:44:10,948 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 604 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:10,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 1933 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:44:10,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17005 states. [2022-03-15 14:44:11,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17005 to 11629. [2022-03-15 14:44:11,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11629 states, 11628 states have (on average 3.042139662882697) internal successors, (35374), 11628 states have internal predecessors, (35374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 35374 transitions. [2022-03-15 14:44:11,286 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 35374 transitions. Word has length 70 [2022-03-15 14:44:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:11,286 INFO L470 AbstractCegarLoop]: Abstraction has 11629 states and 35374 transitions. [2022-03-15 14:44:11,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 34 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 35374 transitions. [2022-03-15 14:44:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:11,301 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:11,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:11,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:11,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-03-15 14:44:11,518 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash -566247181, now seen corresponding path program 97 times [2022-03-15 14:44:11,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:11,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522032345] [2022-03-15 14:44:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:11,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:11,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522032345] [2022-03-15 14:44:11,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522032345] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:11,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119354834] [2022-03-15 14:44:11,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:44:11,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:11,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:11,628 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:11,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-15 14:44:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:11,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:44:11,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:12,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:12,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119354834] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:12,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:12,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:12,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510760514] [2022-03-15 14:44:12,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:12,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:12,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:12,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:12,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:12,336 INFO L87 Difference]: Start difference. First operand 11629 states and 35374 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:13,412 INFO L93 Difference]: Finished difference Result 16449 states and 49459 transitions. [2022-03-15 14:44:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 14:44:13,413 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:13,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:13,443 INFO L225 Difference]: With dead ends: 16449 [2022-03-15 14:44:13,443 INFO L226 Difference]: Without dead ends: 16315 [2022-03-15 14:44:13,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=864, Invalid=5142, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 14:44:13,444 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 458 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:13,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 2049 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:44:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16315 states. [2022-03-15 14:44:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16315 to 11629. [2022-03-15 14:44:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11629 states, 11628 states have (on average 3.042483660130719) internal successors, (35378), 11628 states have internal predecessors, (35378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11629 states to 11629 states and 35378 transitions. [2022-03-15 14:44:13,663 INFO L78 Accepts]: Start accepts. Automaton has 11629 states and 35378 transitions. Word has length 70 [2022-03-15 14:44:13,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:13,663 INFO L470 AbstractCegarLoop]: Abstraction has 11629 states and 35378 transitions. [2022-03-15 14:44:13,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:13,664 INFO L276 IsEmpty]: Start isEmpty. Operand 11629 states and 35378 transitions. [2022-03-15 14:44:13,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:13,679 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:13,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:13,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:13,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:13,895 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:13,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:13,896 INFO L85 PathProgramCache]: Analyzing trace with hash 45657325, now seen corresponding path program 98 times [2022-03-15 14:44:13,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:13,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111630204] [2022-03-15 14:44:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:13,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:13,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:13,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:13,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111630204] [2022-03-15 14:44:13,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111630204] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:13,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8537417] [2022-03-15 14:44:13,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:44:13,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:13,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:13,982 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:13,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-15 14:44:14,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:44:14,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:14,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:44:14,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:14,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:14,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8537417] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:14,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:14,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:14,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502524953] [2022-03-15 14:44:14,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:14,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:14,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:14,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:14,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:14,583 INFO L87 Difference]: Start difference. First operand 11629 states and 35378 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:16,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:16,075 INFO L93 Difference]: Finished difference Result 17464 states and 52615 transitions. [2022-03-15 14:44:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-15 14:44:16,075 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:16,107 INFO L225 Difference]: With dead ends: 17464 [2022-03-15 14:44:16,107 INFO L226 Difference]: Without dead ends: 17338 [2022-03-15 14:44:16,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2726 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1223, Invalid=7707, Unknown=0, NotChecked=0, Total=8930 [2022-03-15 14:44:16,109 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 415 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:16,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 3045 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:16,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17338 states. [2022-03-15 14:44:16,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17338 to 11665. [2022-03-15 14:44:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11665 states, 11664 states have (on average 3.042266803840878) internal successors, (35485), 11664 states have internal predecessors, (35485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11665 states to 11665 states and 35485 transitions. [2022-03-15 14:44:16,323 INFO L78 Accepts]: Start accepts. Automaton has 11665 states and 35485 transitions. Word has length 70 [2022-03-15 14:44:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:16,323 INFO L470 AbstractCegarLoop]: Abstraction has 11665 states and 35485 transitions. [2022-03-15 14:44:16,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 11665 states and 35485 transitions. [2022-03-15 14:44:16,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:16,338 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:16,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:16,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:16,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:16,555 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1539313369, now seen corresponding path program 99 times [2022-03-15 14:44:16,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:16,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132801348] [2022-03-15 14:44:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:16,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:16,647 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:16,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132801348] [2022-03-15 14:44:16,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132801348] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:16,647 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576570495] [2022-03-15 14:44:16,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:44:16,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:16,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:16,648 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:16,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-15 14:44:16,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:44:16,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:16,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:44:16,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:16,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:17,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576570495] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:17,408 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:17,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:17,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577536397] [2022-03-15 14:44:17,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:17,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:17,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:17,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:17,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:17,408 INFO L87 Difference]: Start difference. First operand 11665 states and 35485 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:19,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:19,226 INFO L93 Difference]: Finished difference Result 17251 states and 52120 transitions. [2022-03-15 14:44:19,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-15 14:44:19,226 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:19,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:19,260 INFO L225 Difference]: With dead ends: 17251 [2022-03-15 14:44:19,260 INFO L226 Difference]: Without dead ends: 17095 [2022-03-15 14:44:19,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1214, Invalid=7342, Unknown=0, NotChecked=0, Total=8556 [2022-03-15 14:44:19,262 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 462 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:19,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 2231 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:19,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17095 states. [2022-03-15 14:44:19,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17095 to 11649. [2022-03-15 14:44:19,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11649 states, 11648 states have (on average 3.0423248626373627) internal successors, (35437), 11648 states have internal predecessors, (35437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11649 states to 11649 states and 35437 transitions. [2022-03-15 14:44:19,476 INFO L78 Accepts]: Start accepts. Automaton has 11649 states and 35437 transitions. Word has length 70 [2022-03-15 14:44:19,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:19,476 INFO L470 AbstractCegarLoop]: Abstraction has 11649 states and 35437 transitions. [2022-03-15 14:44:19,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:19,476 INFO L276 IsEmpty]: Start isEmpty. Operand 11649 states and 35437 transitions. [2022-03-15 14:44:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:19,491 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:19,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:19,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:19,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:19,708 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash 90004025, now seen corresponding path program 100 times [2022-03-15 14:44:19,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:19,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679598915] [2022-03-15 14:44:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:19,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:19,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679598915] [2022-03-15 14:44:19,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679598915] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:19,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185417847] [2022-03-15 14:44:19,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:44:19,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:19,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:19,843 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:19,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-15 14:44:19,943 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:44:19,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:19,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 14:44:19,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:20,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:20,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185417847] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:20,562 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:20,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-15 14:44:20,563 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885133251] [2022-03-15 14:44:20,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:20,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:44:20,563 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:20,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:44:20,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:44:20,563 INFO L87 Difference]: Start difference. First operand 11649 states and 35437 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:21,316 INFO L93 Difference]: Finished difference Result 13738 states and 41509 transitions. [2022-03-15 14:44:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:44:21,316 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:21,343 INFO L225 Difference]: With dead ends: 13738 [2022-03-15 14:44:21,343 INFO L226 Difference]: Without dead ends: 13574 [2022-03-15 14:44:21,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=581, Invalid=3579, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 14:44:21,344 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 343 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:21,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 2057 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:44:21,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13574 states. [2022-03-15 14:44:21,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13574 to 11701. [2022-03-15 14:44:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11701 states, 11700 states have (on average 3.0413675213675213) internal successors, (35584), 11700 states have internal predecessors, (35584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11701 states to 11701 states and 35584 transitions. [2022-03-15 14:44:21,546 INFO L78 Accepts]: Start accepts. Automaton has 11701 states and 35584 transitions. Word has length 70 [2022-03-15 14:44:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:21,546 INFO L470 AbstractCegarLoop]: Abstraction has 11701 states and 35584 transitions. [2022-03-15 14:44:21,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 11701 states and 35584 transitions. [2022-03-15 14:44:21,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:21,563 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:21,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:21,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:21,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:21,776 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:21,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:21,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1052816633, now seen corresponding path program 101 times [2022-03-15 14:44:21,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:21,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654750370] [2022-03-15 14:44:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:21,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:21,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:21,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654750370] [2022-03-15 14:44:21,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654750370] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:21,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969257159] [2022-03-15 14:44:21,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:44:21,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:21,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:21,893 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:21,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-15 14:44:22,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:44:22,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:22,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:44:22,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:22,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:22,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969257159] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:22,417 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:22,417 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:44:22,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535238329] [2022-03-15 14:44:22,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:22,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:44:22,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:22,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:44:22,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:44:22,418 INFO L87 Difference]: Start difference. First operand 11701 states and 35584 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:23,766 INFO L93 Difference]: Finished difference Result 16211 states and 49160 transitions. [2022-03-15 14:44:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-15 14:44:23,766 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:23,799 INFO L225 Difference]: With dead ends: 16211 [2022-03-15 14:44:23,800 INFO L226 Difference]: Without dead ends: 16125 [2022-03-15 14:44:23,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2396 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1475, Invalid=6715, Unknown=0, NotChecked=0, Total=8190 [2022-03-15 14:44:23,801 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 402 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:23,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 3019 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:23,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2022-03-15 14:44:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 12377. [2022-03-15 14:44:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12377 states, 12376 states have (on average 3.055187459599224) internal successors, (37811), 12376 states have internal predecessors, (37811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12377 states to 12377 states and 37811 transitions. [2022-03-15 14:44:24,084 INFO L78 Accepts]: Start accepts. Automaton has 12377 states and 37811 transitions. Word has length 70 [2022-03-15 14:44:24,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:24,084 INFO L470 AbstractCegarLoop]: Abstraction has 12377 states and 37811 transitions. [2022-03-15 14:44:24,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 12377 states and 37811 transitions. [2022-03-15 14:44:24,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:24,104 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:24,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:24,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:24,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-03-15 14:44:24,320 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1065260363, now seen corresponding path program 102 times [2022-03-15 14:44:24,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:24,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111983128] [2022-03-15 14:44:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:24,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:24,444 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:24,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111983128] [2022-03-15 14:44:24,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111983128] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:24,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253700494] [2022-03-15 14:44:24,445 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:44:24,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:24,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:24,446 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:24,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-15 14:44:24,550 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:44:24,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:24,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:44:24,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:24,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:25,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253700494] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:25,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:25,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:25,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745158161] [2022-03-15 14:44:25,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:25,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:25,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:25,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:25,305 INFO L87 Difference]: Start difference. First operand 12377 states and 37811 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:27,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:27,478 INFO L93 Difference]: Finished difference Result 21245 states and 64502 transitions. [2022-03-15 14:44:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-15 14:44:27,479 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:27,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:27,522 INFO L225 Difference]: With dead ends: 21245 [2022-03-15 14:44:27,523 INFO L226 Difference]: Without dead ends: 21105 [2022-03-15 14:44:27,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4045 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1827, Invalid=9945, Unknown=0, NotChecked=0, Total=11772 [2022-03-15 14:44:27,524 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 599 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:27,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 2702 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:27,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21105 states. [2022-03-15 14:44:27,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21105 to 12685. [2022-03-15 14:44:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12685 states, 12684 states have (on average 3.054714601072217) internal successors, (38746), 12684 states have internal predecessors, (38746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12685 states to 12685 states and 38746 transitions. [2022-03-15 14:44:27,865 INFO L78 Accepts]: Start accepts. Automaton has 12685 states and 38746 transitions. Word has length 70 [2022-03-15 14:44:27,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:27,865 INFO L470 AbstractCegarLoop]: Abstraction has 12685 states and 38746 transitions. [2022-03-15 14:44:27,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 12685 states and 38746 transitions. [2022-03-15 14:44:27,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:27,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:27,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:27,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:28,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-03-15 14:44:28,102 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:28,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:28,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1448736071, now seen corresponding path program 103 times [2022-03-15 14:44:28,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:28,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368135206] [2022-03-15 14:44:28,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:28,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:28,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:28,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368135206] [2022-03-15 14:44:28,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368135206] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:28,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179387722] [2022-03-15 14:44:28,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:44:28,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:28,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:28,219 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:28,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-15 14:44:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:28,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:44:28,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:28,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:29,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179387722] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:29,014 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:29,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:29,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707767526] [2022-03-15 14:44:29,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:29,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:29,015 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:29,015 INFO L87 Difference]: Start difference. First operand 12685 states and 38746 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:31,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:31,241 INFO L93 Difference]: Finished difference Result 18355 states and 55702 transitions. [2022-03-15 14:44:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-15 14:44:31,241 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:31,281 INFO L225 Difference]: With dead ends: 18355 [2022-03-15 14:44:31,281 INFO L226 Difference]: Without dead ends: 18193 [2022-03-15 14:44:31,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2962 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1311, Invalid=8391, Unknown=0, NotChecked=0, Total=9702 [2022-03-15 14:44:31,283 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 374 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:31,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 3203 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:44:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18193 states. [2022-03-15 14:44:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18193 to 12725. [2022-03-15 14:44:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 12724 states have (on average 3.054699779943414) internal successors, (38868), 12724 states have internal predecessors, (38868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:31,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 38868 transitions. [2022-03-15 14:44:31,580 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 38868 transitions. Word has length 70 [2022-03-15 14:44:31,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:31,580 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 38868 transitions. [2022-03-15 14:44:31,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 38868 transitions. [2022-03-15 14:44:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:31,601 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:31,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:31,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:31,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-03-15 14:44:31,817 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:31,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:31,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1493082771, now seen corresponding path program 104 times [2022-03-15 14:44:31,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:31,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504717496] [2022-03-15 14:44:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:31,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:31,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:31,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504717496] [2022-03-15 14:44:31,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504717496] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:31,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032202447] [2022-03-15 14:44:31,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:44:31,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:31,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:31,936 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:31,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-15 14:44:32,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:44:32,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:32,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:44:32,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:32,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:32,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032202447] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:32,828 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:32,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:32,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236089271] [2022-03-15 14:44:32,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:32,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:32,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:32,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:32,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:32,829 INFO L87 Difference]: Start difference. First operand 12725 states and 38868 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:34,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:34,488 INFO L93 Difference]: Finished difference Result 18145 states and 55212 transitions. [2022-03-15 14:44:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-15 14:44:34,488 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:34,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:34,526 INFO L225 Difference]: With dead ends: 18145 [2022-03-15 14:44:34,526 INFO L226 Difference]: Without dead ends: 17966 [2022-03-15 14:44:34,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1205, Invalid=7167, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 14:44:34,528 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 417 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:34,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 2774 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:34,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17966 states. [2022-03-15 14:44:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17966 to 12709. [2022-03-15 14:44:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12709 states, 12708 states have (on average 3.054453887315077) internal successors, (38816), 12708 states have internal predecessors, (38816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12709 states to 12709 states and 38816 transitions. [2022-03-15 14:44:34,862 INFO L78 Accepts]: Start accepts. Automaton has 12709 states and 38816 transitions. Word has length 70 [2022-03-15 14:44:34,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:34,863 INFO L470 AbstractCegarLoop]: Abstraction has 12709 states and 38816 transitions. [2022-03-15 14:44:34,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:34,863 INFO L276 IsEmpty]: Start isEmpty. Operand 12709 states and 38816 transitions. [2022-03-15 14:44:34,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:34,881 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:34,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:34,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:35,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-03-15 14:44:35,096 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:35,096 INFO L85 PathProgramCache]: Analyzing trace with hash 350262113, now seen corresponding path program 105 times [2022-03-15 14:44:35,097 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:35,097 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208397352] [2022-03-15 14:44:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:35,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:35,216 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:35,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208397352] [2022-03-15 14:44:35,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208397352] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:35,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108285704] [2022-03-15 14:44:35,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:44:35,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:35,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:35,217 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:35,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-15 14:44:35,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:44:35,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:35,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:44:35,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:35,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:35,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108285704] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:35,981 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:35,981 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:35,981 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892330955] [2022-03-15 14:44:35,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:35,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:35,982 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:35,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:35,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:35,982 INFO L87 Difference]: Start difference. First operand 12709 states and 38816 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:38,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:38,501 INFO L93 Difference]: Finished difference Result 19869 states and 60294 transitions. [2022-03-15 14:44:38,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-03-15 14:44:38,502 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:38,613 INFO L225 Difference]: With dead ends: 19869 [2022-03-15 14:44:38,613 INFO L226 Difference]: Without dead ends: 19713 [2022-03-15 14:44:38,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6585 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3046, Invalid=15044, Unknown=0, NotChecked=0, Total=18090 [2022-03-15 14:44:38,614 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 690 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:38,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 2308 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19713 states. [2022-03-15 14:44:38,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19713 to 12725. [2022-03-15 14:44:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 12724 states have (on average 3.054699779943414) internal successors, (38868), 12724 states have internal predecessors, (38868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 38868 transitions. [2022-03-15 14:44:38,884 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 38868 transitions. Word has length 70 [2022-03-15 14:44:38,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:38,885 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 38868 transitions. [2022-03-15 14:44:38,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:38,885 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 38868 transitions. [2022-03-15 14:44:38,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:38,906 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:38,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:38,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-03-15 14:44:39,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-03-15 14:44:39,123 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:39,123 INFO L85 PathProgramCache]: Analyzing trace with hash 337818383, now seen corresponding path program 106 times [2022-03-15 14:44:39,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:39,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540232676] [2022-03-15 14:44:39,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:39,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:39,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540232676] [2022-03-15 14:44:39,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540232676] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:39,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206210643] [2022-03-15 14:44:39,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:44:39,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:39,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:39,231 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:39,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-15 14:44:39,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:44:39,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:39,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 14:44:39,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:39,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:40,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206210643] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:40,014 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:40,014 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-03-15 14:44:40,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370522358] [2022-03-15 14:44:40,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:40,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 14:44:40,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 14:44:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:44:40,015 INFO L87 Difference]: Start difference. First operand 12725 states and 38868 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:42,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:42,068 INFO L93 Difference]: Finished difference Result 17204 states and 51997 transitions. [2022-03-15 14:44:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-15 14:44:42,068 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:42,100 INFO L225 Difference]: With dead ends: 17204 [2022-03-15 14:44:42,100 INFO L226 Difference]: Without dead ends: 17088 [2022-03-15 14:44:42,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3051 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1531, Invalid=8171, Unknown=0, NotChecked=0, Total=9702 [2022-03-15 14:44:42,102 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 476 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:42,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 2978 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:44:42,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17088 states. [2022-03-15 14:44:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17088 to 13025. [2022-03-15 14:44:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13025 states, 13024 states have (on average 3.0553593366093366) internal successors, (39793), 13024 states have internal predecessors, (39793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13025 states to 13025 states and 39793 transitions. [2022-03-15 14:44:42,418 INFO L78 Accepts]: Start accepts. Automaton has 13025 states and 39793 transitions. Word has length 70 [2022-03-15 14:44:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:42,418 INFO L470 AbstractCegarLoop]: Abstraction has 13025 states and 39793 transitions. [2022-03-15 14:44:42,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 13025 states and 39793 transitions. [2022-03-15 14:44:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:42,436 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:42,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:42,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:42,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-03-15 14:44:42,651 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:42,651 INFO L85 PathProgramCache]: Analyzing trace with hash -209379389, now seen corresponding path program 107 times [2022-03-15 14:44:42,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:42,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353036079] [2022-03-15 14:44:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:42,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:42,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:42,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353036079] [2022-03-15 14:44:42,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353036079] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:42,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29942822] [2022-03-15 14:44:42,774 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:44:42,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:42,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:42,775 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:42,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-15 14:44:42,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:44:42,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:42,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:44:42,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:43,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:43,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29942822] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:43,566 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:43,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:44:43,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175734458] [2022-03-15 14:44:43,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:43,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:44:43,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:43,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:44:43,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:44:43,567 INFO L87 Difference]: Start difference. First operand 13025 states and 39793 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:44,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:44,864 INFO L93 Difference]: Finished difference Result 16384 states and 49590 transitions. [2022-03-15 14:44:44,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-15 14:44:44,864 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:44,894 INFO L225 Difference]: With dead ends: 16384 [2022-03-15 14:44:44,894 INFO L226 Difference]: Without dead ends: 16301 [2022-03-15 14:44:44,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1495 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=971, Invalid=4579, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 14:44:44,895 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 347 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:44,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 2432 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:44,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16301 states. [2022-03-15 14:44:45,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16301 to 12957. [2022-03-15 14:44:45,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12957 states, 12956 states have (on average 3.0548008644643407) internal successors, (39578), 12956 states have internal predecessors, (39578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 39578 transitions. [2022-03-15 14:44:45,198 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 39578 transitions. Word has length 70 [2022-03-15 14:44:45,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:45,198 INFO L470 AbstractCegarLoop]: Abstraction has 12957 states and 39578 transitions. [2022-03-15 14:44:45,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:45,198 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 39578 transitions. [2022-03-15 14:44:45,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:45,217 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:45,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:45,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-03-15 14:44:45,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:45,420 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash -165032689, now seen corresponding path program 108 times [2022-03-15 14:44:45,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:45,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114100245] [2022-03-15 14:44:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:45,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:45,538 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:45,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114100245] [2022-03-15 14:44:45,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114100245] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:45,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491511616] [2022-03-15 14:44:45,538 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:44:45,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:45,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:45,539 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:45,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-15 14:44:45,625 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:44:45,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:45,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:44:45,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:45,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:46,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491511616] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:46,296 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:46,296 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:44:46,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626555387] [2022-03-15 14:44:46,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:46,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:44:46,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:44:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:44:46,297 INFO L87 Difference]: Start difference. First operand 12957 states and 39578 transitions. Second operand has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:47,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:47,401 INFO L93 Difference]: Finished difference Result 16263 states and 49223 transitions. [2022-03-15 14:44:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:44:47,401 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:47,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:47,431 INFO L225 Difference]: With dead ends: 16263 [2022-03-15 14:44:47,431 INFO L226 Difference]: Without dead ends: 16144 [2022-03-15 14:44:47,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=914, Invalid=4198, Unknown=0, NotChecked=0, Total=5112 [2022-03-15 14:44:47,432 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 358 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:47,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 2510 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:44:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16144 states. [2022-03-15 14:44:47,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16144 to 12821. [2022-03-15 14:44:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12821 states, 12820 states have (on average 3.0533541341653665) internal successors, (39144), 12820 states have internal predecessors, (39144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:47,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12821 states to 12821 states and 39144 transitions. [2022-03-15 14:44:47,656 INFO L78 Accepts]: Start accepts. Automaton has 12821 states and 39144 transitions. Word has length 70 [2022-03-15 14:44:47,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:47,656 INFO L470 AbstractCegarLoop]: Abstraction has 12821 states and 39144 transitions. [2022-03-15 14:44:47,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9696969696969697) internal successors, (98), 33 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:47,656 INFO L276 IsEmpty]: Start isEmpty. Operand 12821 states and 39144 transitions. [2022-03-15 14:44:47,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:47,674 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:47,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:47,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-03-15 14:44:47,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:47,887 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:47,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:47,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1320297077, now seen corresponding path program 109 times [2022-03-15 14:44:47,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:47,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611963686] [2022-03-15 14:44:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:47,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:48,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:48,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611963686] [2022-03-15 14:44:48,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611963686] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:48,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407371487] [2022-03-15 14:44:48,031 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:44:48,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:48,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:48,032 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:48,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-15 14:44:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:48,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:44:48,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:48,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:48,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407371487] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:48,829 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:48,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:48,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032797076] [2022-03-15 14:44:48,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:48,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:48,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:48,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:48,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:48,830 INFO L87 Difference]: Start difference. First operand 12821 states and 39144 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:52,841 INFO L93 Difference]: Finished difference Result 22213 states and 67364 transitions. [2022-03-15 14:44:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-03-15 14:44:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:52,883 INFO L225 Difference]: With dead ends: 22213 [2022-03-15 14:44:52,884 INFO L226 Difference]: Without dead ends: 22073 [2022-03-15 14:44:52,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7399 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3723, Invalid=15737, Unknown=0, NotChecked=0, Total=19460 [2022-03-15 14:44:52,886 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 755 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:52,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2352 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:44:52,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22073 states. [2022-03-15 14:44:53,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22073 to 13585. [2022-03-15 14:44:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13585 states, 13584 states have (on average 3.0480712603062425) internal successors, (41405), 13584 states have internal predecessors, (41405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13585 states to 13585 states and 41405 transitions. [2022-03-15 14:44:53,176 INFO L78 Accepts]: Start accepts. Automaton has 13585 states and 41405 transitions. Word has length 70 [2022-03-15 14:44:53,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:53,176 INFO L470 AbstractCegarLoop]: Abstraction has 13585 states and 41405 transitions. [2022-03-15 14:44:53,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:53,176 INFO L276 IsEmpty]: Start isEmpty. Operand 13585 states and 41405 transitions. [2022-03-15 14:44:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:53,195 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:53,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:53,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:53,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:53,412 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:53,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:53,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2086967501, now seen corresponding path program 110 times [2022-03-15 14:44:53,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:53,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394670993] [2022-03-15 14:44:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:53,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:53,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:53,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394670993] [2022-03-15 14:44:53,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394670993] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:53,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434292955] [2022-03-15 14:44:53,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:44:53,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:53,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:53,511 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:53,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-15 14:44:53,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:44:53,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:53,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:44:53,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:53,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:54,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434292955] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:54,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:54,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:54,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378908299] [2022-03-15 14:44:54,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:54,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:54,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:54,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:54,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:54,115 INFO L87 Difference]: Start difference. First operand 13585 states and 41405 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:55,294 INFO L93 Difference]: Finished difference Result 18264 states and 55207 transitions. [2022-03-15 14:44:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 14:44:55,294 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:55,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:55,334 INFO L225 Difference]: With dead ends: 18264 [2022-03-15 14:44:55,334 INFO L226 Difference]: Without dead ends: 18036 [2022-03-15 14:44:55,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=781, Invalid=4189, Unknown=0, NotChecked=0, Total=4970 [2022-03-15 14:44:55,335 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 408 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:55,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 2469 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:44:55,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18036 states. [2022-03-15 14:44:55,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18036 to 13497. [2022-03-15 14:44:55,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13497 states, 13496 states have (on average 3.04794013040901) internal successors, (41135), 13496 states have internal predecessors, (41135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:55,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 41135 transitions. [2022-03-15 14:44:55,618 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 41135 transitions. Word has length 70 [2022-03-15 14:44:55,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:55,618 INFO L470 AbstractCegarLoop]: Abstraction has 13497 states and 41135 transitions. [2022-03-15 14:44:55,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:55,618 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 41135 transitions. [2022-03-15 14:44:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:55,641 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:55,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:55,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:55,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:55,857 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash 769385419, now seen corresponding path program 111 times [2022-03-15 14:44:55,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:55,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944122926] [2022-03-15 14:44:55,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:55,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:55,966 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:55,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944122926] [2022-03-15 14:44:55,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944122926] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:55,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311041228] [2022-03-15 14:44:55,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:44:55,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:55,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:55,971 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:55,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-15 14:44:56,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:44:56,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:56,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:44:56,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:56,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:56,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:56,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311041228] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:56,764 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:56,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:44:56,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590640469] [2022-03-15 14:44:56,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:56,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:44:56,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:56,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:44:56,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:44:56,765 INFO L87 Difference]: Start difference. First operand 13497 states and 41135 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:57,890 INFO L93 Difference]: Finished difference Result 18174 states and 54923 transitions. [2022-03-15 14:44:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 14:44:57,890 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:57,930 INFO L225 Difference]: With dead ends: 18174 [2022-03-15 14:44:57,930 INFO L226 Difference]: Without dead ends: 17901 [2022-03-15 14:44:57,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=727, Invalid=4103, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 14:44:57,931 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 434 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:57,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 2684 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:44:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17901 states. [2022-03-15 14:44:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17901 to 13481. [2022-03-15 14:44:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13481 states, 13480 states have (on average 3.047106824925816) internal successors, (41075), 13480 states have internal predecessors, (41075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13481 states to 13481 states and 41075 transitions. [2022-03-15 14:44:58,257 INFO L78 Accepts]: Start accepts. Automaton has 13481 states and 41075 transitions. Word has length 70 [2022-03-15 14:44:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:44:58,257 INFO L470 AbstractCegarLoop]: Abstraction has 13481 states and 41075 transitions. [2022-03-15 14:44:58,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:58,258 INFO L276 IsEmpty]: Start isEmpty. Operand 13481 states and 41075 transitions. [2022-03-15 14:44:58,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:44:58,279 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:44:58,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:44:58,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-03-15 14:44:58,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:58,496 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:44:58,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:44:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash -144331505, now seen corresponding path program 112 times [2022-03-15 14:44:58,497 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:44:58,497 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600539588] [2022-03-15 14:44:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:44:58,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:44:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:44:58,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:58,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:44:58,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600539588] [2022-03-15 14:44:58,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600539588] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:44:58,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182856021] [2022-03-15 14:44:58,617 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:44:58,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:44:58,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:44:58,622 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:44:58,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-15 14:44:58,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:44:58,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:44:58,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:44:58,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:44:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:59,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:44:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:44:59,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182856021] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:44:59,234 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:44:59,234 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:44:59,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568980046] [2022-03-15 14:44:59,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:44:59,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:44:59,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:44:59,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:44:59,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:44:59,235 INFO L87 Difference]: Start difference. First operand 13481 states and 41075 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:44:59,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:44:59,877 INFO L93 Difference]: Finished difference Result 15223 states and 45902 transitions. [2022-03-15 14:44:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:44:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:44:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:44:59,907 INFO L225 Difference]: With dead ends: 15223 [2022-03-15 14:44:59,908 INFO L226 Difference]: Without dead ends: 15100 [2022-03-15 14:44:59,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=396, Invalid=2796, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:44:59,908 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 359 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:44:59,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 2761 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:44:59,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15100 states. [2022-03-15 14:45:00,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15100 to 13613. [2022-03-15 14:45:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13613 states, 13612 states have (on average 3.0462826917425803) internal successors, (41466), 13612 states have internal predecessors, (41466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13613 states to 13613 states and 41466 transitions. [2022-03-15 14:45:00,117 INFO L78 Accepts]: Start accepts. Automaton has 13613 states and 41466 transitions. Word has length 70 [2022-03-15 14:45:00,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:00,117 INFO L470 AbstractCegarLoop]: Abstraction has 13613 states and 41466 transitions. [2022-03-15 14:45:00,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:00,117 INFO L276 IsEmpty]: Start isEmpty. Operand 13613 states and 41466 transitions. [2022-03-15 14:45:00,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:00,138 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:00,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:00,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2022-03-15 14:45:00,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-03-15 14:45:00,355 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:00,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:00,355 INFO L85 PathProgramCache]: Analyzing trace with hash 776265127, now seen corresponding path program 113 times [2022-03-15 14:45:00,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:00,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432823141] [2022-03-15 14:45:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:00,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:00,475 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:00,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432823141] [2022-03-15 14:45:00,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432823141] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:00,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951964988] [2022-03-15 14:45:00,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:45:00,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:00,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:00,477 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:00,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-15 14:45:00,590 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:45:00,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:00,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:00,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:00,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:01,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:01,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951964988] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:01,097 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:01,097 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:01,097 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454013196] [2022-03-15 14:45:01,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:01,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:01,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:01,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:01,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:01,098 INFO L87 Difference]: Start difference. First operand 13613 states and 41466 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:02,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:02,505 INFO L93 Difference]: Finished difference Result 19314 states and 58208 transitions. [2022-03-15 14:45:02,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-15 14:45:02,505 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:02,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:02,545 INFO L225 Difference]: With dead ends: 19314 [2022-03-15 14:45:02,546 INFO L226 Difference]: Without dead ends: 19188 [2022-03-15 14:45:02,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=825, Invalid=5981, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 14:45:02,546 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 402 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:02,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 2664 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:45:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19188 states. [2022-03-15 14:45:02,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19188 to 13641. [2022-03-15 14:45:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13641 states, 13640 states have (on average 3.045967741935484) internal successors, (41547), 13640 states have internal predecessors, (41547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 41547 transitions. [2022-03-15 14:45:02,830 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 41547 transitions. Word has length 70 [2022-03-15 14:45:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:02,830 INFO L470 AbstractCegarLoop]: Abstraction has 13641 states and 41547 transitions. [2022-03-15 14:45:02,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:02,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 41547 transitions. [2022-03-15 14:45:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:02,852 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:02,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:02,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-03-15 14:45:03,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:03,066 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:03,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:03,066 INFO L85 PathProgramCache]: Analyzing trace with hash 737868383, now seen corresponding path program 114 times [2022-03-15 14:45:03,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:03,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787646637] [2022-03-15 14:45:03,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:03,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:03,149 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:03,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787646637] [2022-03-15 14:45:03,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787646637] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:03,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374785417] [2022-03-15 14:45:03,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:45:03,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:03,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:03,151 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:03,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-15 14:45:03,263 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:45:03,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:03,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:03,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:03,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:03,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374785417] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:03,745 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:03,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:03,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708296547] [2022-03-15 14:45:03,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:03,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:03,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:03,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:03,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:03,753 INFO L87 Difference]: Start difference. First operand 13641 states and 41547 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:05,088 INFO L93 Difference]: Finished difference Result 19962 states and 60120 transitions. [2022-03-15 14:45:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 14:45:05,088 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:05,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:05,130 INFO L225 Difference]: With dead ends: 19962 [2022-03-15 14:45:05,130 INFO L226 Difference]: Without dead ends: 19822 [2022-03-15 14:45:05,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1846 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=799, Invalid=5363, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 14:45:05,131 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 444 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:05,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 2497 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:45:05,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19822 states. [2022-03-15 14:45:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19822 to 13653. [2022-03-15 14:45:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13653 states, 13652 states have (on average 3.0465865807207737) internal successors, (41592), 13652 states have internal predecessors, (41592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13653 states to 13653 states and 41592 transitions. [2022-03-15 14:45:05,448 INFO L78 Accepts]: Start accepts. Automaton has 13653 states and 41592 transitions. Word has length 70 [2022-03-15 14:45:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:05,448 INFO L470 AbstractCegarLoop]: Abstraction has 13653 states and 41592 transitions. [2022-03-15 14:45:05,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 13653 states and 41592 transitions. [2022-03-15 14:45:05,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:05,470 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:05,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:05,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-03-15 14:45:05,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-03-15 14:45:05,684 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:05,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:05,684 INFO L85 PathProgramCache]: Analyzing trace with hash -321983337, now seen corresponding path program 115 times [2022-03-15 14:45:05,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:05,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229233825] [2022-03-15 14:45:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:05,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:05,800 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:05,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229233825] [2022-03-15 14:45:05,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229233825] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:05,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440330265] [2022-03-15 14:45:05,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:45:05,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:05,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:05,802 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:05,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-15 14:45:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:05,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:05,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:06,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:06,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440330265] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:06,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:06,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:06,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545832173] [2022-03-15 14:45:06,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:06,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:06,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:06,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:06,430 INFO L87 Difference]: Start difference. First operand 13653 states and 41592 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:08,760 INFO L93 Difference]: Finished difference Result 20542 states and 61961 transitions. [2022-03-15 14:45:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-15 14:45:08,760 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:08,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:08,809 INFO L225 Difference]: With dead ends: 20542 [2022-03-15 14:45:08,809 INFO L226 Difference]: Without dead ends: 20416 [2022-03-15 14:45:08,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4450 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1732, Invalid=11150, Unknown=0, NotChecked=0, Total=12882 [2022-03-15 14:45:08,811 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 594 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:08,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 2081 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:45:08,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20416 states. [2022-03-15 14:45:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20416 to 13721. [2022-03-15 14:45:09,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13721 states, 13720 states have (on average 3.0462827988338192) internal successors, (41795), 13720 states have internal predecessors, (41795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13721 states to 13721 states and 41795 transitions. [2022-03-15 14:45:09,149 INFO L78 Accepts]: Start accepts. Automaton has 13721 states and 41795 transitions. Word has length 70 [2022-03-15 14:45:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:09,149 INFO L470 AbstractCegarLoop]: Abstraction has 13721 states and 41795 transitions. [2022-03-15 14:45:09,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 13721 states and 41795 transitions. [2022-03-15 14:45:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:09,168 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:09,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:09,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-03-15 14:45:09,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-03-15 14:45:09,383 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:09,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:09,384 INFO L85 PathProgramCache]: Analyzing trace with hash -360380081, now seen corresponding path program 116 times [2022-03-15 14:45:09,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:09,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699393937] [2022-03-15 14:45:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:09,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:09,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:09,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699393937] [2022-03-15 14:45:09,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699393937] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:09,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147538089] [2022-03-15 14:45:09,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:45:09,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:09,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:09,512 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:09,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-15 14:45:09,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:45:09,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:09,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:09,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:09,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:10,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147538089] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:10,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:10,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:10,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252801556] [2022-03-15 14:45:10,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:10,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:10,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:10,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:10,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:10,397 INFO L87 Difference]: Start difference. First operand 13721 states and 41795 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:13,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:13,396 INFO L93 Difference]: Finished difference Result 21226 states and 63940 transitions. [2022-03-15 14:45:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-15 14:45:13,396 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:13,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:13,437 INFO L225 Difference]: With dead ends: 21226 [2022-03-15 14:45:13,437 INFO L226 Difference]: Without dead ends: 21086 [2022-03-15 14:45:13,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4333 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1756, Invalid=10900, Unknown=0, NotChecked=0, Total=12656 [2022-03-15 14:45:13,439 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 609 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:13,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 2613 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21086 states. [2022-03-15 14:45:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21086 to 13689. [2022-03-15 14:45:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13689 states, 13688 states have (on average 3.0466832261835184) internal successors, (41703), 13688 states have internal predecessors, (41703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13689 states to 13689 states and 41703 transitions. [2022-03-15 14:45:13,848 INFO L78 Accepts]: Start accepts. Automaton has 13689 states and 41703 transitions. Word has length 70 [2022-03-15 14:45:13,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:13,848 INFO L470 AbstractCegarLoop]: Abstraction has 13689 states and 41703 transitions. [2022-03-15 14:45:13,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 13689 states and 41703 transitions. [2022-03-15 14:45:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:13,866 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:13,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:13,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-03-15 14:45:14,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:14,082 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:14,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:14,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1326068461, now seen corresponding path program 117 times [2022-03-15 14:45:14,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:14,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251161622] [2022-03-15 14:45:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:14,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:14,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:14,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251161622] [2022-03-15 14:45:14,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251161622] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:14,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185705797] [2022-03-15 14:45:14,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:45:14,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:14,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:14,206 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:14,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-15 14:45:14,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:45:14,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:14,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:14,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:14,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:15,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185705797] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:15,051 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:15,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:15,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848671226] [2022-03-15 14:45:15,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:15,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:15,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:15,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:15,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:15,052 INFO L87 Difference]: Start difference. First operand 13689 states and 41703 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:18,310 INFO L93 Difference]: Finished difference Result 23633 states and 71229 transitions. [2022-03-15 14:45:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-03-15 14:45:18,310 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:18,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:18,355 INFO L225 Difference]: With dead ends: 23633 [2022-03-15 14:45:18,355 INFO L226 Difference]: Without dead ends: 23493 [2022-03-15 14:45:18,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6496 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2719, Invalid=14573, Unknown=0, NotChecked=0, Total=17292 [2022-03-15 14:45:18,357 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 749 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:18,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 2538 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2022-03-15 14:45:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 13777. [2022-03-15 14:45:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13777 states, 13776 states have (on average 3.060177119628339) internal successors, (42157), 13776 states have internal predecessors, (42157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13777 states to 13777 states and 42157 transitions. [2022-03-15 14:45:18,693 INFO L78 Accepts]: Start accepts. Automaton has 13777 states and 42157 transitions. Word has length 70 [2022-03-15 14:45:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:18,693 INFO L470 AbstractCegarLoop]: Abstraction has 13777 states and 42157 transitions. [2022-03-15 14:45:18,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 13777 states and 42157 transitions. [2022-03-15 14:45:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:18,713 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:18,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:18,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-03-15 14:45:18,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:18,929 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:18,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:18,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1942574281, now seen corresponding path program 118 times [2022-03-15 14:45:18,930 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:18,930 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457857149] [2022-03-15 14:45:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:18,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:19,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:19,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457857149] [2022-03-15 14:45:19,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457857149] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:19,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666351980] [2022-03-15 14:45:19,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:45:19,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:19,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:19,014 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:19,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-15 14:45:19,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:45:19,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:19,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:45:19,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:19,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:19,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666351980] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:19,527 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:19,527 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:45:19,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083175504] [2022-03-15 14:45:19,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:19,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:45:19,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:19,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:45:19,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:45:19,528 INFO L87 Difference]: Start difference. First operand 13777 states and 42157 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:22,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:22,414 INFO L93 Difference]: Finished difference Result 18748 states and 56815 transitions. [2022-03-15 14:45:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-15 14:45:22,414 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:22,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:22,454 INFO L225 Difference]: With dead ends: 18748 [2022-03-15 14:45:22,454 INFO L226 Difference]: Without dead ends: 18670 [2022-03-15 14:45:22,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8162 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2949, Invalid=20307, Unknown=0, NotChecked=0, Total=23256 [2022-03-15 14:45:22,457 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 655 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:22,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 3367 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:45:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18670 states. [2022-03-15 14:45:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18670 to 14421. [2022-03-15 14:45:22,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14421 states, 14420 states have (on average 3.0624133148404993) internal successors, (44160), 14420 states have internal predecessors, (44160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14421 states to 14421 states and 44160 transitions. [2022-03-15 14:45:22,755 INFO L78 Accepts]: Start accepts. Automaton has 14421 states and 44160 transitions. Word has length 70 [2022-03-15 14:45:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:22,755 INFO L470 AbstractCegarLoop]: Abstraction has 14421 states and 44160 transitions. [2022-03-15 14:45:22,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 14421 states and 44160 transitions. [2022-03-15 14:45:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:22,777 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:22,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:22,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-03-15 14:45:22,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2022-03-15 14:45:22,994 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:22,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2012351217, now seen corresponding path program 119 times [2022-03-15 14:45:22,995 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:22,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949922298] [2022-03-15 14:45:22,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:22,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:23,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:23,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949922298] [2022-03-15 14:45:23,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949922298] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:23,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76319678] [2022-03-15 14:45:23,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:45:23,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:23,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:23,124 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:23,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-15 14:45:23,239 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:45:23,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:23,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:45:23,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:23,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:23,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76319678] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:23,728 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:23,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:45:23,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050914863] [2022-03-15 14:45:23,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:23,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:45:23,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:45:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:45:23,729 INFO L87 Difference]: Start difference. First operand 14421 states and 44160 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:24,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:24,527 INFO L93 Difference]: Finished difference Result 15479 states and 47015 transitions. [2022-03-15 14:45:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:45:24,528 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:24,563 INFO L225 Difference]: With dead ends: 15479 [2022-03-15 14:45:24,563 INFO L226 Difference]: Without dead ends: 15416 [2022-03-15 14:45:24,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=607, Invalid=3683, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 14:45:24,564 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 391 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:24,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 2456 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:45:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15416 states. [2022-03-15 14:45:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15416 to 14377. [2022-03-15 14:45:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14377 states, 14376 states have (on average 3.062813021702838) internal successors, (44031), 14376 states have internal predecessors, (44031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14377 states to 14377 states and 44031 transitions. [2022-03-15 14:45:24,824 INFO L78 Accepts]: Start accepts. Automaton has 14377 states and 44031 transitions. Word has length 70 [2022-03-15 14:45:24,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:24,825 INFO L470 AbstractCegarLoop]: Abstraction has 14377 states and 44031 transitions. [2022-03-15 14:45:24,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:24,825 INFO L276 IsEmpty]: Start isEmpty. Operand 14377 states and 44031 transitions. [2022-03-15 14:45:24,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:24,847 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:24,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:24,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-03-15 14:45:25,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:25,063 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:25,064 INFO L85 PathProgramCache]: Analyzing trace with hash 570526483, now seen corresponding path program 120 times [2022-03-15 14:45:25,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:25,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700582375] [2022-03-15 14:45:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:25,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:25,162 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:25,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700582375] [2022-03-15 14:45:25,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700582375] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:25,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218900161] [2022-03-15 14:45:25,163 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:45:25,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:25,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:25,164 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:25,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-03-15 14:45:25,297 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:45:25,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:25,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:25,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:25,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:25,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218900161] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:25,931 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:25,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:25,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635652181] [2022-03-15 14:45:25,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:25,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:25,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:25,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:25,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:25,932 INFO L87 Difference]: Start difference. First operand 14377 states and 44031 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:27,499 INFO L93 Difference]: Finished difference Result 20394 states and 61586 transitions. [2022-03-15 14:45:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 14:45:27,499 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:27,537 INFO L225 Difference]: With dead ends: 20394 [2022-03-15 14:45:27,537 INFO L226 Difference]: Without dead ends: 20260 [2022-03-15 14:45:27,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=828, Invalid=5492, Unknown=0, NotChecked=0, Total=6320 [2022-03-15 14:45:27,538 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 389 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:27,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 2742 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:45:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20260 states. [2022-03-15 14:45:27,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20260 to 14373. [2022-03-15 14:45:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14373 states, 14372 states have (on average 3.0631784024492066) internal successors, (44024), 14372 states have internal predecessors, (44024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14373 states to 14373 states and 44024 transitions. [2022-03-15 14:45:27,842 INFO L78 Accepts]: Start accepts. Automaton has 14373 states and 44024 transitions. Word has length 70 [2022-03-15 14:45:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:27,843 INFO L470 AbstractCegarLoop]: Abstraction has 14373 states and 44024 transitions. [2022-03-15 14:45:27,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 14373 states and 44024 transitions. [2022-03-15 14:45:27,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:27,863 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:27,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:27,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-03-15 14:45:28,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:28,079 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:28,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:28,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1182430989, now seen corresponding path program 121 times [2022-03-15 14:45:28,079 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:28,079 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837840681] [2022-03-15 14:45:28,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:28,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:28,204 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:28,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837840681] [2022-03-15 14:45:28,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837840681] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:28,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327043285] [2022-03-15 14:45:28,205 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:45:28,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:28,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:28,206 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:28,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-03-15 14:45:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:28,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:28,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:28,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:28,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327043285] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:28,949 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:28,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:28,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337572906] [2022-03-15 14:45:28,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:28,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:28,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:28,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:28,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:28,950 INFO L87 Difference]: Start difference. First operand 14373 states and 44024 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:30,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:30,812 INFO L93 Difference]: Finished difference Result 20356 states and 61496 transitions. [2022-03-15 14:45:30,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-15 14:45:30,812 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:30,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:30,850 INFO L225 Difference]: With dead ends: 20356 [2022-03-15 14:45:30,850 INFO L226 Difference]: Without dead ends: 20206 [2022-03-15 14:45:30,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=924, Invalid=6048, Unknown=0, NotChecked=0, Total=6972 [2022-03-15 14:45:30,851 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 450 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:30,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 2857 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:30,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20206 states. [2022-03-15 14:45:31,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20206 to 14345. [2022-03-15 14:45:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14345 states, 14344 states have (on average 3.0632320133853876) internal successors, (43939), 14344 states have internal predecessors, (43939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14345 states to 14345 states and 43939 transitions. [2022-03-15 14:45:31,123 INFO L78 Accepts]: Start accepts. Automaton has 14345 states and 43939 transitions. Word has length 70 [2022-03-15 14:45:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:31,123 INFO L470 AbstractCegarLoop]: Abstraction has 14345 states and 43939 transitions. [2022-03-15 14:45:31,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand 14345 states and 43939 transitions. [2022-03-15 14:45:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:31,144 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:31,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:31,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-03-15 14:45:31,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:31,354 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:31,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:31,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1226777689, now seen corresponding path program 122 times [2022-03-15 14:45:31,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:31,355 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858452018] [2022-03-15 14:45:31,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:31,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:31,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:31,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858452018] [2022-03-15 14:45:31,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858452018] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:31,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560841216] [2022-03-15 14:45:31,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:45:31,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:31,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:31,483 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:31,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-03-15 14:45:31,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:45:31,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:31,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:31,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:31,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:32,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560841216] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:32,365 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:32,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:32,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646669441] [2022-03-15 14:45:32,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:32,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:32,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:32,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:32,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:32,366 INFO L87 Difference]: Start difference. First operand 14345 states and 43939 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:33,465 INFO L93 Difference]: Finished difference Result 19962 states and 60523 transitions. [2022-03-15 14:45:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 14:45:33,465 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:33,507 INFO L225 Difference]: With dead ends: 19962 [2022-03-15 14:45:33,507 INFO L226 Difference]: Without dead ends: 19783 [2022-03-15 14:45:33,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=766, Invalid=4636, Unknown=0, NotChecked=0, Total=5402 [2022-03-15 14:45:33,508 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 475 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:33,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 2538 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:45:33,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19783 states. [2022-03-15 14:45:33,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19783 to 14317. [2022-03-15 14:45:33,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14317 states, 14316 states have (on average 3.062727018720313) internal successors, (43846), 14316 states have internal predecessors, (43846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14317 states to 14317 states and 43846 transitions. [2022-03-15 14:45:33,781 INFO L78 Accepts]: Start accepts. Automaton has 14317 states and 43846 transitions. Word has length 70 [2022-03-15 14:45:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:33,781 INFO L470 AbstractCegarLoop]: Abstraction has 14317 states and 43846 transitions. [2022-03-15 14:45:33,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 14317 states and 43846 transitions. [2022-03-15 14:45:33,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:33,802 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:33,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:33,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-03-15 14:45:34,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:34,003 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:34,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:34,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2058340145, now seen corresponding path program 123 times [2022-03-15 14:45:34,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:34,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384185411] [2022-03-15 14:45:34,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:34,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:34,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:34,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384185411] [2022-03-15 14:45:34,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384185411] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:34,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967731469] [2022-03-15 14:45:34,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:45:34,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:34,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:34,119 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:34,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-03-15 14:45:34,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:45:34,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:34,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:45:34,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:34,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:34,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967731469] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:34,875 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:34,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:45:34,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673429690] [2022-03-15 14:45:34,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:34,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:45:34,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:34,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:45:34,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:45:34,876 INFO L87 Difference]: Start difference. First operand 14317 states and 43846 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:35,985 INFO L93 Difference]: Finished difference Result 17980 states and 54647 transitions. [2022-03-15 14:45:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:45:35,986 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:36,022 INFO L225 Difference]: With dead ends: 17980 [2022-03-15 14:45:36,022 INFO L226 Difference]: Without dead ends: 17797 [2022-03-15 14:45:36,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=825, Invalid=4725, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 14:45:36,023 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 478 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:36,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 2438 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:45:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17797 states. [2022-03-15 14:45:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17797 to 14341. [2022-03-15 14:45:36,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14341 states, 14340 states have (on average 3.059135285913529) internal successors, (43868), 14340 states have internal predecessors, (43868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:36,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 43868 transitions. [2022-03-15 14:45:36,287 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 43868 transitions. Word has length 70 [2022-03-15 14:45:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:36,287 INFO L470 AbstractCegarLoop]: Abstraction has 14341 states and 43868 transitions. [2022-03-15 14:45:36,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 43868 transitions. [2022-03-15 14:45:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:36,309 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:36,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:36,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-03-15 14:45:36,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-03-15 14:45:36,527 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1316030519, now seen corresponding path program 124 times [2022-03-15 14:45:36,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:36,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937778553] [2022-03-15 14:45:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:36,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:36,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:36,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937778553] [2022-03-15 14:45:36,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937778553] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:36,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95844670] [2022-03-15 14:45:36,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:45:36,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:36,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:36,652 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:36,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-03-15 14:45:36,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:45:36,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:36,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:45:36,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:37,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:37,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95844670] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:37,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:37,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:45:37,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245957266] [2022-03-15 14:45:37,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:37,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:45:37,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:37,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:45:37,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:45:37,398 INFO L87 Difference]: Start difference. First operand 14341 states and 43868 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:38,905 INFO L93 Difference]: Finished difference Result 23806 states and 72311 transitions. [2022-03-15 14:45:38,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-15 14:45:38,905 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:38,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:38,952 INFO L225 Difference]: With dead ends: 23806 [2022-03-15 14:45:38,952 INFO L226 Difference]: Without dead ends: 23707 [2022-03-15 14:45:38,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2157 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=920, Invalid=5886, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 14:45:38,953 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 513 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:38,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 2486 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:45:38,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23707 states. [2022-03-15 14:45:39,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23707 to 14569. [2022-03-15 14:45:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14569 states, 14568 states have (on average 3.061161449752883) internal successors, (44595), 14568 states have internal predecessors, (44595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14569 states to 14569 states and 44595 transitions. [2022-03-15 14:45:39,367 INFO L78 Accepts]: Start accepts. Automaton has 14569 states and 44595 transitions. Word has length 70 [2022-03-15 14:45:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:39,367 INFO L470 AbstractCegarLoop]: Abstraction has 14569 states and 44595 transitions. [2022-03-15 14:45:39,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 14569 states and 44595 transitions. [2022-03-15 14:45:39,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:39,387 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:39,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:39,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-03-15 14:45:39,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-03-15 14:45:39,588 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:39,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:39,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1354427263, now seen corresponding path program 125 times [2022-03-15 14:45:39,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:39,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096413599] [2022-03-15 14:45:39,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:39,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:39,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:39,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096413599] [2022-03-15 14:45:39,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096413599] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:39,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454947488] [2022-03-15 14:45:39,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:45:39,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:39,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:39,699 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:39,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-03-15 14:45:39,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:45:39,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:39,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:39,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:40,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:40,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454947488] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:40,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:40,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:40,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259390489] [2022-03-15 14:45:40,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:40,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:40,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:40,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:40,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:40,566 INFO L87 Difference]: Start difference. First operand 14569 states and 44595 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:42,679 INFO L93 Difference]: Finished difference Result 27149 states and 82633 transitions. [2022-03-15 14:45:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-15 14:45:42,679 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:42,735 INFO L225 Difference]: With dead ends: 27149 [2022-03-15 14:45:42,735 INFO L226 Difference]: Without dead ends: 27009 [2022-03-15 14:45:42,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4430 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1891, Invalid=10765, Unknown=0, NotChecked=0, Total=12656 [2022-03-15 14:45:42,737 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 683 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:42,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 2792 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:45:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27009 states. [2022-03-15 14:45:43,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27009 to 14625. [2022-03-15 14:45:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14625 states, 14624 states have (on average 3.061337527352298) internal successors, (44769), 14624 states have internal predecessors, (44769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14625 states to 14625 states and 44769 transitions. [2022-03-15 14:45:43,146 INFO L78 Accepts]: Start accepts. Automaton has 14625 states and 44769 transitions. Word has length 70 [2022-03-15 14:45:43,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:43,146 INFO L470 AbstractCegarLoop]: Abstraction has 14625 states and 44769 transitions. [2022-03-15 14:45:43,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:43,147 INFO L276 IsEmpty]: Start isEmpty. Operand 14625 states and 44769 transitions. [2022-03-15 14:45:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:43,167 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:43,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:43,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-03-15 14:45:43,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-03-15 14:45:43,383 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:43,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:43,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1880688313, now seen corresponding path program 126 times [2022-03-15 14:45:43,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:43,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179473277] [2022-03-15 14:45:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:43,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:43,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:43,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179473277] [2022-03-15 14:45:43,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179473277] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:43,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549411879] [2022-03-15 14:45:43,464 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:45:43,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:43,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:43,465 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:43,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-03-15 14:45:43,601 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:45:43,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:43,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:43,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:43,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:44,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549411879] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:44,139 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:44,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:44,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165959378] [2022-03-15 14:45:44,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:44,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:44,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:44,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:44,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:44,140 INFO L87 Difference]: Start difference. First operand 14625 states and 44769 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:47,562 INFO L93 Difference]: Finished difference Result 27837 states and 84927 transitions. [2022-03-15 14:45:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-03-15 14:45:47,562 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:47,630 INFO L225 Difference]: With dead ends: 27837 [2022-03-15 14:45:47,630 INFO L226 Difference]: Without dead ends: 27711 [2022-03-15 14:45:47,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10675 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3694, Invalid=23366, Unknown=0, NotChecked=0, Total=27060 [2022-03-15 14:45:47,633 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 797 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:47,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 2942 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27711 states. [2022-03-15 14:45:47,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27711 to 14513. [2022-03-15 14:45:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14513 states, 14512 states have (on average 3.0601571113561192) internal successors, (44409), 14512 states have internal predecessors, (44409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14513 states to 14513 states and 44409 transitions. [2022-03-15 14:45:48,021 INFO L78 Accepts]: Start accepts. Automaton has 14513 states and 44409 transitions. Word has length 70 [2022-03-15 14:45:48,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:48,021 INFO L470 AbstractCegarLoop]: Abstraction has 14513 states and 44409 transitions. [2022-03-15 14:45:48,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:48,021 INFO L276 IsEmpty]: Start isEmpty. Operand 14513 states and 44409 transitions. [2022-03-15 14:45:48,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:48,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:48,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:48,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-03-15 14:45:48,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-03-15 14:45:48,249 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1842291569, now seen corresponding path program 127 times [2022-03-15 14:45:48,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:48,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25991648] [2022-03-15 14:45:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:48,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:48,390 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:48,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25991648] [2022-03-15 14:45:48,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25991648] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:48,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574680794] [2022-03-15 14:45:48,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:45:48,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:48,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:48,391 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:48,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-03-15 14:45:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:48,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:48,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:48,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:49,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574680794] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:49,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:49,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:49,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581295529] [2022-03-15 14:45:49,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:49,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:49,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:49,047 INFO L87 Difference]: Start difference. First operand 14513 states and 44409 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:52,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:45:52,682 INFO L93 Difference]: Finished difference Result 28353 states and 86292 transitions. [2022-03-15 14:45:52,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-15 14:45:52,683 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:45:52,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:45:52,741 INFO L225 Difference]: With dead ends: 28353 [2022-03-15 14:45:52,742 INFO L226 Difference]: Without dead ends: 28213 [2022-03-15 14:45:52,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11311 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4137, Invalid=24593, Unknown=0, NotChecked=0, Total=28730 [2022-03-15 14:45:52,745 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 750 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:45:52,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 3123 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:45:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28213 states. [2022-03-15 14:45:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28213 to 14497. [2022-03-15 14:45:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14497 states, 14496 states have (on average 3.0599475717439293) internal successors, (44357), 14496 states have internal predecessors, (44357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14497 states to 14497 states and 44357 transitions. [2022-03-15 14:45:53,127 INFO L78 Accepts]: Start accepts. Automaton has 14497 states and 44357 transitions. Word has length 70 [2022-03-15 14:45:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:45:53,127 INFO L470 AbstractCegarLoop]: Abstraction has 14497 states and 44357 transitions. [2022-03-15 14:45:53,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:45:53,127 INFO L276 IsEmpty]: Start isEmpty. Operand 14497 states and 44357 transitions. [2022-03-15 14:45:53,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:45:53,147 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:45:53,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:45:53,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-03-15 14:45:53,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:53,363 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:45:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:45:53,363 INFO L85 PathProgramCache]: Analyzing trace with hash 876603189, now seen corresponding path program 128 times [2022-03-15 14:45:53,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:45:53,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096271269] [2022-03-15 14:45:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:45:53,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:45:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:45:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:53,488 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:45:53,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096271269] [2022-03-15 14:45:53,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096271269] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:45:53,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074340646] [2022-03-15 14:45:53,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:45:53,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:45:53,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:45:53,489 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:45:53,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-03-15 14:45:53,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:45:53,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:45:53,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:45:53,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:45:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:53,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:45:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:45:54,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074340646] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:45:54,365 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:45:54,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:45:54,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098349803] [2022-03-15 14:45:54,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:45:54,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:45:54,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:45:54,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:45:54,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:45:54,366 INFO L87 Difference]: Start difference. First operand 14497 states and 44357 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:00,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:00,193 INFO L93 Difference]: Finished difference Result 29139 states and 88557 transitions. [2022-03-15 14:46:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-03-15 14:46:00,193 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:00,267 INFO L225 Difference]: With dead ends: 29139 [2022-03-15 14:46:00,267 INFO L226 Difference]: Without dead ends: 28999 [2022-03-15 14:46:00,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18841 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=6774, Invalid=37536, Unknown=0, NotChecked=0, Total=44310 [2022-03-15 14:46:00,270 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1043 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:00,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 3048 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:46:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28999 states. [2022-03-15 14:46:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28999 to 14293. [2022-03-15 14:46:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14293 states, 14292 states have (on average 3.0542961097117267) internal successors, (43652), 14292 states have internal predecessors, (43652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14293 states to 14293 states and 43652 transitions. [2022-03-15 14:46:00,691 INFO L78 Accepts]: Start accepts. Automaton has 14293 states and 43652 transitions. Word has length 70 [2022-03-15 14:46:00,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:00,691 INFO L470 AbstractCegarLoop]: Abstraction has 14293 states and 43652 transitions. [2022-03-15 14:46:00,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 14293 states and 43652 transitions. [2022-03-15 14:46:00,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:00,714 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:00,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:00,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:00,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2022-03-15 14:46:00,927 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:00,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash -149721365, now seen corresponding path program 129 times [2022-03-15 14:46:00,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:00,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572629397] [2022-03-15 14:46:00,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:00,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:01,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:01,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572629397] [2022-03-15 14:46:01,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572629397] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:01,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968753148] [2022-03-15 14:46:01,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:46:01,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:01,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:01,056 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:01,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-03-15 14:46:01,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:46:01,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:01,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:46:01,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:01,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:01,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968753148] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:01,685 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:01,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:46:01,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22644577] [2022-03-15 14:46:01,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:01,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:46:01,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:01,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:46:01,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:46:01,686 INFO L87 Difference]: Start difference. First operand 14293 states and 43652 transitions. Second operand has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:02,766 INFO L93 Difference]: Finished difference Result 15416 states and 46706 transitions. [2022-03-15 14:46:02,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-15 14:46:02,766 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:02,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:02,797 INFO L225 Difference]: With dead ends: 15416 [2022-03-15 14:46:02,797 INFO L226 Difference]: Without dead ends: 15338 [2022-03-15 14:46:02,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1297, Invalid=5509, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 14:46:02,798 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 500 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:02,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 2606 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:46:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15338 states. [2022-03-15 14:46:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15338 to 12497. [2022-03-15 14:46:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12497 states, 12496 states have (on average 3.036571702944942) internal successors, (37945), 12496 states have internal predecessors, (37945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12497 states to 12497 states and 37945 transitions. [2022-03-15 14:46:03,014 INFO L78 Accepts]: Start accepts. Automaton has 12497 states and 37945 transitions. Word has length 70 [2022-03-15 14:46:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:03,014 INFO L470 AbstractCegarLoop]: Abstraction has 12497 states and 37945 transitions. [2022-03-15 14:46:03,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.8823529411764706) internal successors, (98), 34 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 12497 states and 37945 transitions. [2022-03-15 14:46:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:03,033 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:03,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:03,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:03,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2022-03-15 14:46:03,248 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1521769163, now seen corresponding path program 130 times [2022-03-15 14:46:03,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:03,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106796535] [2022-03-15 14:46:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:03,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:03,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:03,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106796535] [2022-03-15 14:46:03,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106796535] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:03,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870858448] [2022-03-15 14:46:03,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:46:03,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:03,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:03,330 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:03,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-03-15 14:46:03,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:46:03,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:03,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:46:03,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:03,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:03,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870858448] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:03,905 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:03,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:46:03,905 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442146105] [2022-03-15 14:46:03,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:03,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:46:03,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:03,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:46:03,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:46:03,906 INFO L87 Difference]: Start difference. First operand 12497 states and 37945 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:05,010 INFO L93 Difference]: Finished difference Result 20350 states and 61283 transitions. [2022-03-15 14:46:05,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 14:46:05,010 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:05,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:05,049 INFO L225 Difference]: With dead ends: 20350 [2022-03-15 14:46:05,049 INFO L226 Difference]: Without dead ends: 20219 [2022-03-15 14:46:05,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=965, Invalid=5515, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 14:46:05,050 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 457 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:05,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 2384 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:46:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20219 states. [2022-03-15 14:46:05,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20219 to 12461. [2022-03-15 14:46:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12461 states, 12460 states have (on average 3.0380417335473515) internal successors, (37854), 12460 states have internal predecessors, (37854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:05,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 37854 transitions. [2022-03-15 14:46:05,416 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 37854 transitions. Word has length 70 [2022-03-15 14:46:05,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:05,416 INFO L470 AbstractCegarLoop]: Abstraction has 12461 states and 37854 transitions. [2022-03-15 14:46:05,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 37854 transitions. [2022-03-15 14:46:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:05,437 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:05,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:05,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-03-15 14:46:05,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:05,654 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:05,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:05,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1312213585, now seen corresponding path program 131 times [2022-03-15 14:46:05,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:05,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851845962] [2022-03-15 14:46:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:05,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:05,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:05,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851845962] [2022-03-15 14:46:05,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851845962] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:05,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560314261] [2022-03-15 14:46:05,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:46:05,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:05,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:05,734 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:05,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-03-15 14:46:05,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:46:05,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:05,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:46:05,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:06,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:46:06,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560314261] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:46:06,032 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:46:06,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 25 [2022-03-15 14:46:06,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573055026] [2022-03-15 14:46:06,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:46:06,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 14:46:06,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:06,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 14:46:06,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-03-15 14:46:06,033 INFO L87 Difference]: Start difference. First operand 12461 states and 37854 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:06,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:06,186 INFO L93 Difference]: Finished difference Result 12624 states and 38234 transitions. [2022-03-15 14:46:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 14:46:06,186 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:06,213 INFO L225 Difference]: With dead ends: 12624 [2022-03-15 14:46:06,213 INFO L226 Difference]: Without dead ends: 12337 [2022-03-15 14:46:06,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-03-15 14:46:06,213 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 124 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:06,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1197 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:46:06,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12337 states. [2022-03-15 14:46:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12337 to 12177. [2022-03-15 14:46:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12177 states, 12176 states have (on average 3.019464520367937) internal successors, (36765), 12176 states have internal predecessors, (36765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12177 states to 12177 states and 36765 transitions. [2022-03-15 14:46:06,405 INFO L78 Accepts]: Start accepts. Automaton has 12177 states and 36765 transitions. Word has length 70 [2022-03-15 14:46:06,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:06,406 INFO L470 AbstractCegarLoop]: Abstraction has 12177 states and 36765 transitions. [2022-03-15 14:46:06,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 12177 states and 36765 transitions. [2022-03-15 14:46:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:06,422 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:06,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:06,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:06,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:06,635 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:06,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:06,636 INFO L85 PathProgramCache]: Analyzing trace with hash 961642929, now seen corresponding path program 132 times [2022-03-15 14:46:06,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:06,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359567157] [2022-03-15 14:46:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:06,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:06,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:06,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359567157] [2022-03-15 14:46:06,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359567157] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:06,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937345676] [2022-03-15 14:46:06,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:46:06,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:06,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:06,735 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:06,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-03-15 14:46:06,857 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:46:06,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:06,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:46:06,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:07,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:07,614 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937345676] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:07,614 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:07,614 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:46:07,614 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463349317] [2022-03-15 14:46:07,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:07,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:46:07,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:07,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:46:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=983, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:46:07,615 INFO L87 Difference]: Start difference. First operand 12177 states and 36765 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:09,386 INFO L93 Difference]: Finished difference Result 21497 states and 64789 transitions. [2022-03-15 14:46:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-15 14:46:09,387 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:09,428 INFO L225 Difference]: With dead ends: 21497 [2022-03-15 14:46:09,428 INFO L226 Difference]: Without dead ends: 21227 [2022-03-15 14:46:09,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2570 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=915, Invalid=6741, Unknown=0, NotChecked=0, Total=7656 [2022-03-15 14:46:09,429 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 574 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:09,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 2660 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:46:09,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21227 states. [2022-03-15 14:46:09,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21227 to 12001. [2022-03-15 14:46:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12001 states, 12000 states have (on average 3.0064166666666665) internal successors, (36077), 12000 states have internal predecessors, (36077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:09,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12001 states to 12001 states and 36077 transitions. [2022-03-15 14:46:09,764 INFO L78 Accepts]: Start accepts. Automaton has 12001 states and 36077 transitions. Word has length 70 [2022-03-15 14:46:09,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:09,764 INFO L470 AbstractCegarLoop]: Abstraction has 12001 states and 36077 transitions. [2022-03-15 14:46:09,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 12001 states and 36077 transitions. [2022-03-15 14:46:09,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:09,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:09,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:09,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-03-15 14:46:09,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable164 [2022-03-15 14:46:09,995 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:09,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:09,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1882239561, now seen corresponding path program 133 times [2022-03-15 14:46:09,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:09,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207125474] [2022-03-15 14:46:09,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:09,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:10,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:10,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207125474] [2022-03-15 14:46:10,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207125474] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:10,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199367528] [2022-03-15 14:46:10,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:46:10,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:10,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:10,106 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:10,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-03-15 14:46:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:10,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:46:10,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:10,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:10,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199367528] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:10,928 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:10,928 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:46:10,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133873522] [2022-03-15 14:46:10,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:10,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:46:10,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:10,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:46:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:46:10,929 INFO L87 Difference]: Start difference. First operand 12001 states and 36077 transitions. Second operand has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:12,195 INFO L93 Difference]: Finished difference Result 21117 states and 63584 transitions. [2022-03-15 14:46:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-15 14:46:12,195 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:12,234 INFO L225 Difference]: With dead ends: 21117 [2022-03-15 14:46:12,235 INFO L226 Difference]: Without dead ends: 20843 [2022-03-15 14:46:12,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2494 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=976, Invalid=6680, Unknown=0, NotChecked=0, Total=7656 [2022-03-15 14:46:12,237 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 535 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:12,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 2120 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:46:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20843 states. [2022-03-15 14:46:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20843 to 11889. [2022-03-15 14:46:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11889 states, 11888 states have (on average 2.947257738896366) internal successors, (35037), 11888 states have internal predecessors, (35037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11889 states to 11889 states and 35037 transitions. [2022-03-15 14:46:12,473 INFO L78 Accepts]: Start accepts. Automaton has 11889 states and 35037 transitions. Word has length 70 [2022-03-15 14:46:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:12,474 INFO L470 AbstractCegarLoop]: Abstraction has 11889 states and 35037 transitions. [2022-03-15 14:46:12,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0) internal successors, (102), 34 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 11889 states and 35037 transitions. [2022-03-15 14:46:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:12,489 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:12,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:12,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:12,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:12,704 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash -866153785, now seen corresponding path program 134 times [2022-03-15 14:46:12,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:12,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110656336] [2022-03-15 14:46:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:12,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:12,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:12,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110656336] [2022-03-15 14:46:12,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110656336] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:12,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283496475] [2022-03-15 14:46:12,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:46:12,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:12,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:12,842 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:12,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-03-15 14:46:13,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:46:13,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:13,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:46:13,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:13,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:13,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283496475] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:13,660 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:13,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2022-03-15 14:46:13,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232818634] [2022-03-15 14:46:13,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:13,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 14:46:13,661 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:13,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 14:46:13,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:46:13,662 INFO L87 Difference]: Start difference. First operand 11889 states and 35037 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:15,167 INFO L93 Difference]: Finished difference Result 21857 states and 64947 transitions. [2022-03-15 14:46:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 14:46:15,167 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:15,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:15,209 INFO L225 Difference]: With dead ends: 21857 [2022-03-15 14:46:15,210 INFO L226 Difference]: Without dead ends: 21691 [2022-03-15 14:46:15,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1037, Invalid=6103, Unknown=0, NotChecked=0, Total=7140 [2022-03-15 14:46:15,211 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 490 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:15,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 2450 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:46:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21691 states. [2022-03-15 14:46:15,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21691 to 11861. [2022-03-15 14:46:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11861 states, 11860 states have (on average 2.948735244519393) internal successors, (34972), 11860 states have internal predecessors, (34972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11861 states to 11861 states and 34972 transitions. [2022-03-15 14:46:15,462 INFO L78 Accepts]: Start accepts. Automaton has 11861 states and 34972 transitions. Word has length 70 [2022-03-15 14:46:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:15,462 INFO L470 AbstractCegarLoop]: Abstraction has 11861 states and 34972 transitions. [2022-03-15 14:46:15,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 34 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 11861 states and 34972 transitions. [2022-03-15 14:46:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:15,477 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:15,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:15,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:15,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-03-15 14:46:15,691 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:15,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1964973657, now seen corresponding path program 135 times [2022-03-15 14:46:15,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:15,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882978384] [2022-03-15 14:46:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:15,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:15,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:15,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882978384] [2022-03-15 14:46:15,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882978384] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:15,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427525036] [2022-03-15 14:46:15,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:46:15,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:15,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:15,772 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:15,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-03-15 14:46:15,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:46:15,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:15,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:46:15,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:16,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:16,465 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427525036] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:16,465 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:16,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2022-03-15 14:46:16,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815760363] [2022-03-15 14:46:16,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:16,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 14:46:16,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:16,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 14:46:16,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 14:46:16,466 INFO L87 Difference]: Start difference. First operand 11861 states and 34972 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:17,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:17,677 INFO L93 Difference]: Finished difference Result 14438 states and 41939 transitions. [2022-03-15 14:46:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-15 14:46:17,678 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:17,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:17,702 INFO L225 Difference]: With dead ends: 14438 [2022-03-15 14:46:17,703 INFO L226 Difference]: Without dead ends: 14321 [2022-03-15 14:46:17,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=812, Invalid=5508, Unknown=0, NotChecked=0, Total=6320 [2022-03-15 14:46:17,703 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 463 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:17,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 2719 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:46:17,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2022-03-15 14:46:17,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 11965. [2022-03-15 14:46:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11965 states, 11964 states have (on average 2.9486793714476764) internal successors, (35278), 11964 states have internal predecessors, (35278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11965 states to 11965 states and 35278 transitions. [2022-03-15 14:46:17,892 INFO L78 Accepts]: Start accepts. Automaton has 11965 states and 35278 transitions. Word has length 70 [2022-03-15 14:46:17,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:17,893 INFO L470 AbstractCegarLoop]: Abstraction has 11965 states and 35278 transitions. [2022-03-15 14:46:17,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:17,893 INFO L276 IsEmpty]: Start isEmpty. Operand 11965 states and 35278 transitions. [2022-03-15 14:46:17,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:17,909 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:17,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:17,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:18,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:18,124 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash 866725193, now seen corresponding path program 136 times [2022-03-15 14:46:18,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:18,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957282032] [2022-03-15 14:46:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:18,234 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:18,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957282032] [2022-03-15 14:46:18,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957282032] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:18,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609996728] [2022-03-15 14:46:18,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:46:18,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:18,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:18,237 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:18,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-03-15 14:46:18,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:46:18,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:18,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:46:18,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:18,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:18,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609996728] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:18,966 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:18,966 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:46:18,966 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336954728] [2022-03-15 14:46:18,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:18,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:46:18,966 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:18,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:46:18,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:46:18,967 INFO L87 Difference]: Start difference. First operand 11965 states and 35278 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:20,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:20,307 INFO L93 Difference]: Finished difference Result 14444 states and 42080 transitions. [2022-03-15 14:46:20,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-15 14:46:20,307 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:20,332 INFO L225 Difference]: With dead ends: 14444 [2022-03-15 14:46:20,333 INFO L226 Difference]: Without dead ends: 14354 [2022-03-15 14:46:20,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2297 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1034, Invalid=6106, Unknown=0, NotChecked=0, Total=7140 [2022-03-15 14:46:20,334 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 444 mSDsluCounter, 2569 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:20,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 2588 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:46:20,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14354 states. [2022-03-15 14:46:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14354 to 11997. [2022-03-15 14:46:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11997 states, 11996 states have (on average 2.948816272090697) internal successors, (35374), 11996 states have internal predecessors, (35374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:20,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11997 states to 11997 states and 35374 transitions. [2022-03-15 14:46:20,520 INFO L78 Accepts]: Start accepts. Automaton has 11997 states and 35374 transitions. Word has length 70 [2022-03-15 14:46:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:20,520 INFO L470 AbstractCegarLoop]: Abstraction has 11997 states and 35374 transitions. [2022-03-15 14:46:20,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 11997 states and 35374 transitions. [2022-03-15 14:46:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:20,535 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:20,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:20,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:20,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-03-15 14:46:20,752 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash -98963187, now seen corresponding path program 137 times [2022-03-15 14:46:20,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:20,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628409574] [2022-03-15 14:46:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:20,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:20,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:20,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628409574] [2022-03-15 14:46:20,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628409574] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:20,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370633163] [2022-03-15 14:46:20,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:46:20,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:20,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:20,856 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:20,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-03-15 14:46:20,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:46:20,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:20,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:46:20,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:21,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:21,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370633163] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:21,687 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:21,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2022-03-15 14:46:21,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340010358] [2022-03-15 14:46:21,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:21,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:46:21,687 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:21,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:46:21,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:46:21,688 INFO L87 Difference]: Start difference. First operand 11997 states and 35374 transitions. Second operand has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:22,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:22,865 INFO L93 Difference]: Finished difference Result 16331 states and 48156 transitions. [2022-03-15 14:46:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-15 14:46:22,865 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:22,895 INFO L225 Difference]: With dead ends: 16331 [2022-03-15 14:46:22,895 INFO L226 Difference]: Without dead ends: 16245 [2022-03-15 14:46:22,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1375, Invalid=6107, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 14:46:22,897 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 478 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:22,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 2339 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:46:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16245 states. [2022-03-15 14:46:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16245 to 12441. [2022-03-15 14:46:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12441 states, 12440 states have (on average 2.9558681672025724) internal successors, (36771), 12440 states have internal predecessors, (36771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12441 states to 12441 states and 36771 transitions. [2022-03-15 14:46:23,112 INFO L78 Accepts]: Start accepts. Automaton has 12441 states and 36771 transitions. Word has length 70 [2022-03-15 14:46:23,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:23,112 INFO L470 AbstractCegarLoop]: Abstraction has 12441 states and 36771 transitions. [2022-03-15 14:46:23,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.909090909090909) internal successors, (96), 33 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 12441 states and 36771 transitions. [2022-03-15 14:46:23,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:23,129 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:23,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:23,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:23,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-03-15 14:46:23,345 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:23,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash 133632917, now seen corresponding path program 138 times [2022-03-15 14:46:23,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:23,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358266862] [2022-03-15 14:46:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:23,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:23,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:23,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358266862] [2022-03-15 14:46:23,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358266862] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:23,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634074501] [2022-03-15 14:46:23,477 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:46:23,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:23,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:23,478 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:23,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-03-15 14:46:23,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:46:23,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:23,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:46:23,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:23,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:24,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634074501] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:24,245 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:24,245 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:46:24,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918403785] [2022-03-15 14:46:24,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:24,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:46:24,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:24,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:46:24,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:46:24,247 INFO L87 Difference]: Start difference. First operand 12441 states and 36771 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:26,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:26,459 INFO L93 Difference]: Finished difference Result 15186 states and 44456 transitions. [2022-03-15 14:46:26,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-03-15 14:46:26,459 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:26,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:26,488 INFO L225 Difference]: With dead ends: 15186 [2022-03-15 14:46:26,488 INFO L226 Difference]: Without dead ends: 14980 [2022-03-15 14:46:26,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3073 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1259, Invalid=8641, Unknown=0, NotChecked=0, Total=9900 [2022-03-15 14:46:26,489 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 422 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:26,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 2816 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:46:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14980 states. [2022-03-15 14:46:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14980 to 12509. [2022-03-15 14:46:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12509 states, 12508 states have (on average 2.9550687559961624) internal successors, (36962), 12508 states have internal predecessors, (36962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12509 states to 12509 states and 36962 transitions. [2022-03-15 14:46:26,701 INFO L78 Accepts]: Start accepts. Automaton has 12509 states and 36962 transitions. Word has length 70 [2022-03-15 14:46:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:26,701 INFO L470 AbstractCegarLoop]: Abstraction has 12509 states and 36962 transitions. [2022-03-15 14:46:26,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 12509 states and 36962 transitions. [2022-03-15 14:46:26,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:26,720 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:26,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:26,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:26,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-03-15 14:46:26,935 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1883448011, now seen corresponding path program 139 times [2022-03-15 14:46:26,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:26,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488396490] [2022-03-15 14:46:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:26,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:27,065 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:27,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488396490] [2022-03-15 14:46:27,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488396490] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:27,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602137798] [2022-03-15 14:46:27,065 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:46:27,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:27,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:27,066 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:27,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-03-15 14:46:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:27,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:46:27,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:27,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:27,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602137798] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:27,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:27,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:46:27,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692029777] [2022-03-15 14:46:27,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:27,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:46:27,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:46:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:46:27,947 INFO L87 Difference]: Start difference. First operand 12509 states and 36962 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:30,785 INFO L93 Difference]: Finished difference Result 16083 states and 47002 transitions. [2022-03-15 14:46:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-15 14:46:30,785 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:30,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:30,812 INFO L225 Difference]: With dead ends: 16083 [2022-03-15 14:46:30,812 INFO L226 Difference]: Without dead ends: 15900 [2022-03-15 14:46:30,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3750 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1507, Invalid=10049, Unknown=0, NotChecked=0, Total=11556 [2022-03-15 14:46:30,813 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 444 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:30,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 2992 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:46:30,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15900 states. [2022-03-15 14:46:30,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15900 to 12681. [2022-03-15 14:46:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12681 states, 12680 states have (on average 2.9535488958990537) internal successors, (37451), 12680 states have internal predecessors, (37451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12681 states to 12681 states and 37451 transitions. [2022-03-15 14:46:31,021 INFO L78 Accepts]: Start accepts. Automaton has 12681 states and 37451 transitions. Word has length 70 [2022-03-15 14:46:31,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:31,021 INFO L470 AbstractCegarLoop]: Abstraction has 12681 states and 37451 transitions. [2022-03-15 14:46:31,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 12681 states and 37451 transitions. [2022-03-15 14:46:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:31,038 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:31,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:31,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:31,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2022-03-15 14:46:31,254 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:31,254 INFO L85 PathProgramCache]: Analyzing trace with hash 728183623, now seen corresponding path program 140 times [2022-03-15 14:46:31,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:31,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898422882] [2022-03-15 14:46:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:31,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:31,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:31,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898422882] [2022-03-15 14:46:31,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898422882] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:31,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798929319] [2022-03-15 14:46:31,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:46:31,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:31,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:31,346 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:31,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-03-15 14:46:31,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:46:31,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:31,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:46:31,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:31,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:32,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798929319] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:32,159 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:32,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:46:32,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861167362] [2022-03-15 14:46:32,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:32,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:46:32,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:32,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:46:32,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:46:32,160 INFO L87 Difference]: Start difference. First operand 12681 states and 37451 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:35,813 INFO L93 Difference]: Finished difference Result 17930 states and 52560 transitions. [2022-03-15 14:46:35,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-15 14:46:35,813 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:35,847 INFO L225 Difference]: With dead ends: 17930 [2022-03-15 14:46:35,847 INFO L226 Difference]: Without dead ends: 17844 [2022-03-15 14:46:35,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6380 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2695, Invalid=15395, Unknown=0, NotChecked=0, Total=18090 [2022-03-15 14:46:35,848 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 590 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:35,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 2770 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:46:35,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17844 states. [2022-03-15 14:46:36,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17844 to 12541. [2022-03-15 14:46:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12541 states, 12540 states have (on average 2.952950558213716) internal successors, (37030), 12540 states have internal predecessors, (37030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 37030 transitions. [2022-03-15 14:46:36,074 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 37030 transitions. Word has length 70 [2022-03-15 14:46:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:36,074 INFO L470 AbstractCegarLoop]: Abstraction has 12541 states and 37030 transitions. [2022-03-15 14:46:36,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 37030 transitions. [2022-03-15 14:46:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-15 14:46:36,094 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:36,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:36,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:36,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:36,307 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:36,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:36,308 INFO L85 PathProgramCache]: Analyzing trace with hash 225332551, now seen corresponding path program 141 times [2022-03-15 14:46:36,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:36,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415539843] [2022-03-15 14:46:36,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:36,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:36,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:36,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:36,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415539843] [2022-03-15 14:46:36,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415539843] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:36,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328895035] [2022-03-15 14:46:36,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:46:36,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:36,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:36,386 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:36,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-03-15 14:46:36,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:46:36,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:36,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 14:46:36,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:36,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:37,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328895035] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:37,125 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:37,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-03-15 14:46:37,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136994868] [2022-03-15 14:46:37,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:37,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 14:46:37,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 14:46:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:46:37,126 INFO L87 Difference]: Start difference. First operand 12541 states and 37030 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:41,229 INFO L93 Difference]: Finished difference Result 16321 states and 47667 transitions. [2022-03-15 14:46:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-15 14:46:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-03-15 14:46:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:41,255 INFO L225 Difference]: With dead ends: 16321 [2022-03-15 14:46:41,255 INFO L226 Difference]: Without dead ends: 16138 [2022-03-15 14:46:41,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5234 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2371, Invalid=12881, Unknown=0, NotChecked=0, Total=15252 [2022-03-15 14:46:41,256 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 559 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:41,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 2763 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:46:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2022-03-15 14:46:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 12657. [2022-03-15 14:46:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12657 states, 12656 states have (on average 2.9520385587863465) internal successors, (37361), 12656 states have internal predecessors, (37361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12657 states to 12657 states and 37361 transitions. [2022-03-15 14:46:41,463 INFO L78 Accepts]: Start accepts. Automaton has 12657 states and 37361 transitions. Word has length 70 [2022-03-15 14:46:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:41,463 INFO L470 AbstractCegarLoop]: Abstraction has 12657 states and 37361 transitions. [2022-03-15 14:46:41,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:41,463 INFO L276 IsEmpty]: Start isEmpty. Operand 12657 states and 37361 transitions. [2022-03-15 14:46:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 14:46:41,480 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:41,480 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:41,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:41,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:41,691 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:41,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:41,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1700585577, now seen corresponding path program 142 times [2022-03-15 14:46:41,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:41,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119306961] [2022-03-15 14:46:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:41,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:41,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:41,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119306961] [2022-03-15 14:46:41,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119306961] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:41,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338018246] [2022-03-15 14:46:41,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:46:41,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:41,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:41,735 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:41,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-03-15 14:46:41,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:46:41,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:41,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:46:41,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:41,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:42,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338018246] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:42,102 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:42,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-15 14:46:42,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698008530] [2022-03-15 14:46:42,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:42,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:46:42,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:42,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:46:42,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:46:42,102 INFO L87 Difference]: Start difference. First operand 12657 states and 37361 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:42,442 INFO L93 Difference]: Finished difference Result 14135 states and 41295 transitions. [2022-03-15 14:46:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 14:46:42,442 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-15 14:46:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:42,469 INFO L225 Difference]: With dead ends: 14135 [2022-03-15 14:46:42,469 INFO L226 Difference]: Without dead ends: 14135 [2022-03-15 14:46:42,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:46:42,469 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 304 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:42,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 823 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:46:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14135 states. [2022-03-15 14:46:42,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14135 to 12801. [2022-03-15 14:46:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12801 states, 12800 states have (on average 2.951640625) internal successors, (37781), 12800 states have internal predecessors, (37781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12801 states to 12801 states and 37781 transitions. [2022-03-15 14:46:42,673 INFO L78 Accepts]: Start accepts. Automaton has 12801 states and 37781 transitions. Word has length 74 [2022-03-15 14:46:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:42,673 INFO L470 AbstractCegarLoop]: Abstraction has 12801 states and 37781 transitions. [2022-03-15 14:46:42,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:42,674 INFO L276 IsEmpty]: Start isEmpty. Operand 12801 states and 37781 transitions. [2022-03-15 14:46:42,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 14:46:42,694 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:42,695 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:42,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:42,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:42,895 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:42,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:42,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1759323673, now seen corresponding path program 143 times [2022-03-15 14:46:42,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:42,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631549627] [2022-03-15 14:46:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:42,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:42,961 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:42,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631549627] [2022-03-15 14:46:42,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631549627] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:42,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613278800] [2022-03-15 14:46:42,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:46:42,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:42,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:42,976 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:42,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-03-15 14:46:43,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:46:43,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:43,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:46:43,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:43,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:43,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613278800] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:43,372 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:43,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-15 14:46:43,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244686556] [2022-03-15 14:46:43,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:43,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:46:43,372 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:43,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:46:43,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:46:43,373 INFO L87 Difference]: Start difference. First operand 12801 states and 37781 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:43,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:43,886 INFO L93 Difference]: Finished difference Result 14181 states and 41374 transitions. [2022-03-15 14:46:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:46:43,886 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-15 14:46:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:43,914 INFO L225 Difference]: With dead ends: 14181 [2022-03-15 14:46:43,914 INFO L226 Difference]: Without dead ends: 14181 [2022-03-15 14:46:43,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=1475, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:46:43,915 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 409 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:43,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 1122 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:46:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14181 states. [2022-03-15 14:46:44,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14181 to 12857. [2022-03-15 14:46:44,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12857 states, 12856 states have (on average 2.9513845675171124) internal successors, (37943), 12856 states have internal predecessors, (37943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12857 states to 12857 states and 37943 transitions. [2022-03-15 14:46:44,156 INFO L78 Accepts]: Start accepts. Automaton has 12857 states and 37943 transitions. Word has length 74 [2022-03-15 14:46:44,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:44,156 INFO L470 AbstractCegarLoop]: Abstraction has 12857 states and 37943 transitions. [2022-03-15 14:46:44,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:44,156 INFO L276 IsEmpty]: Start isEmpty. Operand 12857 states and 37943 transitions. [2022-03-15 14:46:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 14:46:44,174 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:44,174 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:44,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:44,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:44,387 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1130358979, now seen corresponding path program 144 times [2022-03-15 14:46:44,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:44,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279713085] [2022-03-15 14:46:44,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:44,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:44,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:44,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279713085] [2022-03-15 14:46:44,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279713085] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:44,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610879263] [2022-03-15 14:46:44,446 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:46:44,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:44,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:44,447 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:44,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-03-15 14:46:44,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:46:44,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:44,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:46:44,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:44,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:44,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610879263] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:44,810 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:44,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-03-15 14:46:44,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860539868] [2022-03-15 14:46:44,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:44,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 14:46:44,810 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:44,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 14:46:44,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-15 14:46:44,810 INFO L87 Difference]: Start difference. First operand 12857 states and 37943 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:45,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:45,087 INFO L93 Difference]: Finished difference Result 14088 states and 41318 transitions. [2022-03-15 14:46:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 14:46:45,087 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-15 14:46:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:45,118 INFO L225 Difference]: With dead ends: 14088 [2022-03-15 14:46:45,118 INFO L226 Difference]: Without dead ends: 14088 [2022-03-15 14:46:45,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2022-03-15 14:46:45,119 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 285 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:45,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 989 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:46:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14088 states. [2022-03-15 14:46:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14088 to 12465. [2022-03-15 14:46:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12465 states, 12464 states have (on average 2.9574775353016687) internal successors, (36862), 12464 states have internal predecessors, (36862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12465 states to 12465 states and 36862 transitions. [2022-03-15 14:46:45,357 INFO L78 Accepts]: Start accepts. Automaton has 12465 states and 36862 transitions. Word has length 74 [2022-03-15 14:46:45,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:45,357 INFO L470 AbstractCegarLoop]: Abstraction has 12465 states and 36862 transitions. [2022-03-15 14:46:45,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:45,357 INFO L276 IsEmpty]: Start isEmpty. Operand 12465 states and 36862 transitions. [2022-03-15 14:46:45,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 14:46:45,377 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:45,377 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:45,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:45,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable176 [2022-03-15 14:46:45,594 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:45,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:45,595 INFO L85 PathProgramCache]: Analyzing trace with hash -525314691, now seen corresponding path program 145 times [2022-03-15 14:46:45,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:45,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871036275] [2022-03-15 14:46:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:45,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:45,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:45,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871036275] [2022-03-15 14:46:45,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871036275] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:45,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790286985] [2022-03-15 14:46:45,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:46:45,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:45,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:45,644 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:45,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-03-15 14:46:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:45,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:46:45,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:45,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:45,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790286985] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:45,999 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:45,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-15 14:46:45,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496541866] [2022-03-15 14:46:45,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:45,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:46:46,000 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:46,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:46:46,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:46:46,000 INFO L87 Difference]: Start difference. First operand 12465 states and 36862 transitions. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:46,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:46,284 INFO L93 Difference]: Finished difference Result 13302 states and 38964 transitions. [2022-03-15 14:46:46,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:46:46,284 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-15 14:46:46,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:46,309 INFO L225 Difference]: With dead ends: 13302 [2022-03-15 14:46:46,310 INFO L226 Difference]: Without dead ends: 13266 [2022-03-15 14:46:46,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2022-03-15 14:46:46,310 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 163 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:46,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1006 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:46:46,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13266 states. [2022-03-15 14:46:46,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13266 to 12133. [2022-03-15 14:46:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12133 states, 12132 states have (on average 2.956890867128256) internal successors, (35873), 12132 states have internal predecessors, (35873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:46,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12133 states to 12133 states and 35873 transitions. [2022-03-15 14:46:46,489 INFO L78 Accepts]: Start accepts. Automaton has 12133 states and 35873 transitions. Word has length 74 [2022-03-15 14:46:46,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:46,490 INFO L470 AbstractCegarLoop]: Abstraction has 12133 states and 35873 transitions. [2022-03-15 14:46:46,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:46,490 INFO L276 IsEmpty]: Start isEmpty. Operand 12133 states and 35873 transitions. [2022-03-15 14:46:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 14:46:46,505 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:46,505 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:46,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:46,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:46,721 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:46,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1963115701, now seen corresponding path program 146 times [2022-03-15 14:46:46,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:46,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985430230] [2022-03-15 14:46:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:46,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:46,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985430230] [2022-03-15 14:46:46,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985430230] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:46,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619215683] [2022-03-15 14:46:46,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:46:46,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:46,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:46,757 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:46,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-03-15 14:46:46,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:46:46,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:46,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:46:46,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:47,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:47,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619215683] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:47,154 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:47,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-15 14:46:47,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882071743] [2022-03-15 14:46:47,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:47,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:46:47,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:47,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:46:47,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:46:47,154 INFO L87 Difference]: Start difference. First operand 12133 states and 35873 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:47,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:47,490 INFO L93 Difference]: Finished difference Result 13672 states and 39905 transitions. [2022-03-15 14:46:47,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 14:46:47,490 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-15 14:46:47,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:47,589 INFO L225 Difference]: With dead ends: 13672 [2022-03-15 14:46:47,589 INFO L226 Difference]: Without dead ends: 13672 [2022-03-15 14:46:47,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:46:47,589 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 310 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:47,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 850 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:46:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13672 states. [2022-03-15 14:46:47,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13672 to 11773. [2022-03-15 14:46:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11773 states, 11772 states have (on average 2.953024125042474) internal successors, (34763), 11772 states have internal predecessors, (34763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11773 states to 11773 states and 34763 transitions. [2022-03-15 14:46:47,744 INFO L78 Accepts]: Start accepts. Automaton has 11773 states and 34763 transitions. Word has length 74 [2022-03-15 14:46:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:47,744 INFO L470 AbstractCegarLoop]: Abstraction has 11773 states and 34763 transitions. [2022-03-15 14:46:47,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 11773 states and 34763 transitions. [2022-03-15 14:46:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 14:46:47,758 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:47,759 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:47,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:47,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-03-15 14:46:47,971 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:47,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash -433839251, now seen corresponding path program 147 times [2022-03-15 14:46:47,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:47,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025166125] [2022-03-15 14:46:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:47,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:48,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:48,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025166125] [2022-03-15 14:46:48,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025166125] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:48,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175177859] [2022-03-15 14:46:48,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:46:48,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:48,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:48,011 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:48,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-03-15 14:46:48,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:46:48,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:48,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:46:48,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:48,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:48,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175177859] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:48,394 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:48,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-15 14:46:48,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731813157] [2022-03-15 14:46:48,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:48,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:46:48,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:48,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:46:48,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:46:48,395 INFO L87 Difference]: Start difference. First operand 11773 states and 34763 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:48,808 INFO L93 Difference]: Finished difference Result 12670 states and 37013 transitions. [2022-03-15 14:46:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 14:46:48,808 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-15 14:46:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:48,830 INFO L225 Difference]: With dead ends: 12670 [2022-03-15 14:46:48,830 INFO L226 Difference]: Without dead ends: 12634 [2022-03-15 14:46:48,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=978, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:46:48,831 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 205 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:48,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1158 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:46:48,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12634 states. [2022-03-15 14:46:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12634 to 11469. [2022-03-15 14:46:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11469 states, 11468 states have (on average 2.9510812696198117) internal successors, (33843), 11468 states have internal predecessors, (33843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11469 states to 11469 states and 33843 transitions. [2022-03-15 14:46:49,009 INFO L78 Accepts]: Start accepts. Automaton has 11469 states and 33843 transitions. Word has length 74 [2022-03-15 14:46:49,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:49,009 INFO L470 AbstractCegarLoop]: Abstraction has 11469 states and 33843 transitions. [2022-03-15 14:46:49,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 11469 states and 33843 transitions. [2022-03-15 14:46:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 14:46:49,024 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:49,024 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:49,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:49,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-03-15 14:46:49,240 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2118918771, now seen corresponding path program 148 times [2022-03-15 14:46:49,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:49,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742107795] [2022-03-15 14:46:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:49,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:49,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:49,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742107795] [2022-03-15 14:46:49,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742107795] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:49,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514397776] [2022-03-15 14:46:49,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:46:49,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:49,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:49,282 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:49,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-03-15 14:46:49,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:46:49,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:49,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:46:49,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:49,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:49,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514397776] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:49,616 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:49,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-15 14:46:49,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417273646] [2022-03-15 14:46:49,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:49,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:46:49,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:49,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:46:49,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:46:49,617 INFO L87 Difference]: Start difference. First operand 11469 states and 33843 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:49,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:49,929 INFO L93 Difference]: Finished difference Result 12266 states and 35915 transitions. [2022-03-15 14:46:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 14:46:49,929 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-15 14:46:49,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:49,948 INFO L225 Difference]: With dead ends: 12266 [2022-03-15 14:46:49,948 INFO L226 Difference]: Without dead ends: 12230 [2022-03-15 14:46:49,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2022-03-15 14:46:49,950 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 219 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:49,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 991 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:46:49,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12230 states. [2022-03-15 14:46:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12230 to 11513. [2022-03-15 14:46:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11513 states, 11512 states have (on average 2.95135510771369) internal successors, (33976), 11512 states have internal predecessors, (33976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11513 states to 11513 states and 33976 transitions. [2022-03-15 14:46:50,119 INFO L78 Accepts]: Start accepts. Automaton has 11513 states and 33976 transitions. Word has length 74 [2022-03-15 14:46:50,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:50,119 INFO L470 AbstractCegarLoop]: Abstraction has 11513 states and 33976 transitions. [2022-03-15 14:46:50,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:50,119 INFO L276 IsEmpty]: Start isEmpty. Operand 11513 states and 33976 transitions. [2022-03-15 14:46:50,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 14:46:50,133 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:50,133 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:50,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:50,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:50,349 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:50,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:50,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1069541713, now seen corresponding path program 149 times [2022-03-15 14:46:50,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:50,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685054968] [2022-03-15 14:46:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:50,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:50,392 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:50,392 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685054968] [2022-03-15 14:46:50,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685054968] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:50,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061329058] [2022-03-15 14:46:50,393 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:46:50,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:50,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:50,394 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:50,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-03-15 14:46:50,542 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:46:50,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:50,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:46:50,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:50,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:50,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061329058] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:50,725 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:50,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-15 14:46:50,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801284155] [2022-03-15 14:46:50,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:50,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:46:50,726 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:46:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:46:50,726 INFO L87 Difference]: Start difference. First operand 11513 states and 33976 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:51,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:51,181 INFO L93 Difference]: Finished difference Result 12402 states and 36248 transitions. [2022-03-15 14:46:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 14:46:51,181 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-15 14:46:51,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:51,203 INFO L225 Difference]: With dead ends: 12402 [2022-03-15 14:46:51,203 INFO L226 Difference]: Without dead ends: 12366 [2022-03-15 14:46:51,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=1475, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:46:51,204 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 337 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:51,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 1014 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:46:51,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12366 states. [2022-03-15 14:46:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12366 to 11481. [2022-03-15 14:46:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11481 states, 11480 states have (on average 2.9505226480836235) internal successors, (33872), 11480 states have internal predecessors, (33872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11481 states to 11481 states and 33872 transitions. [2022-03-15 14:46:51,394 INFO L78 Accepts]: Start accepts. Automaton has 11481 states and 33872 transitions. Word has length 74 [2022-03-15 14:46:51,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:51,394 INFO L470 AbstractCegarLoop]: Abstraction has 11481 states and 33872 transitions. [2022-03-15 14:46:51,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand 11481 states and 33872 transitions. [2022-03-15 14:46:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 14:46:51,409 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:51,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:51,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-03-15 14:46:51,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2022-03-15 14:46:51,626 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:51,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:51,626 INFO L85 PathProgramCache]: Analyzing trace with hash -374564563, now seen corresponding path program 150 times [2022-03-15 14:46:51,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:51,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563534314] [2022-03-15 14:46:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:51,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:51,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:51,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563534314] [2022-03-15 14:46:51,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563534314] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:51,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199855] [2022-03-15 14:46:51,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:46:51,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:51,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:51,652 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:51,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-03-15 14:46:51,784 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:46:51,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:51,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:46:51,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:51,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:51,893 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199855] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:51,893 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:51,893 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-03-15 14:46:51,893 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960022571] [2022-03-15 14:46:51,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:51,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 14:46:51,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:51,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 14:46:51,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-03-15 14:46:51,894 INFO L87 Difference]: Start difference. First operand 11481 states and 33872 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:52,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:52,090 INFO L93 Difference]: Finished difference Result 12346 states and 36137 transitions. [2022-03-15 14:46:52,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 14:46:52,091 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-15 14:46:52,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:52,116 INFO L225 Difference]: With dead ends: 12346 [2022-03-15 14:46:52,116 INFO L226 Difference]: Without dead ends: 12298 [2022-03-15 14:46:52,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=249, Invalid=507, Unknown=0, NotChecked=0, Total=756 [2022-03-15 14:46:52,117 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 270 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:52,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 824 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:46:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12298 states. [2022-03-15 14:46:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12298 to 10885. [2022-03-15 14:46:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10885 states, 10884 states have (on average 2.9546122748989343) internal successors, (32158), 10884 states have internal predecessors, (32158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10885 states to 10885 states and 32158 transitions. [2022-03-15 14:46:52,289 INFO L78 Accepts]: Start accepts. Automaton has 10885 states and 32158 transitions. Word has length 74 [2022-03-15 14:46:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:52,289 INFO L470 AbstractCegarLoop]: Abstraction has 10885 states and 32158 transitions. [2022-03-15 14:46:52,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 10885 states and 32158 transitions. [2022-03-15 14:46:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 14:46:52,303 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:52,303 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:52,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:52,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:52,519 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:52,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:52,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1326088179, now seen corresponding path program 151 times [2022-03-15 14:46:52,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:52,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494657784] [2022-03-15 14:46:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:52,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:52,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:52,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494657784] [2022-03-15 14:46:52,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494657784] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:52,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501530122] [2022-03-15 14:46:52,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:46:52,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:52,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:52,546 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:52,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-03-15 14:46:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:52,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 14:46:52,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:52,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:52,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501530122] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:52,799 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:52,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-03-15 14:46:52,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317829185] [2022-03-15 14:46:52,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:52,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 14:46:52,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 14:46:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:46:52,799 INFO L87 Difference]: Start difference. First operand 10885 states and 32158 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:53,033 INFO L93 Difference]: Finished difference Result 12036 states and 35091 transitions. [2022-03-15 14:46:53,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:46:53,033 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-15 14:46:53,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:53,055 INFO L225 Difference]: With dead ends: 12036 [2022-03-15 14:46:53,055 INFO L226 Difference]: Without dead ends: 12036 [2022-03-15 14:46:53,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2022-03-15 14:46:53,055 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 314 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:53,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 807 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:46:53,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12036 states. [2022-03-15 14:46:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12036 to 10669. [2022-03-15 14:46:53,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 2.9501312335958003) internal successors, (31472), 10668 states have internal predecessors, (31472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 31472 transitions. [2022-03-15 14:46:53,219 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 31472 transitions. Word has length 74 [2022-03-15 14:46:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:53,219 INFO L470 AbstractCegarLoop]: Abstraction has 10669 states and 31472 transitions. [2022-03-15 14:46:53,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 31472 transitions. [2022-03-15 14:46:53,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:46:53,234 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:53,234 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:53,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:53,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2022-03-15 14:46:53,449 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:53,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1482324071, now seen corresponding path program 152 times [2022-03-15 14:46:53,449 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:53,449 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694578652] [2022-03-15 14:46:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:53,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:53,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:53,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694578652] [2022-03-15 14:46:53,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694578652] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:53,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914957215] [2022-03-15 14:46:53,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:46:53,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:53,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:53,566 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:53,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-03-15 14:46:53,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:46:53,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:53,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:46:53,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:53,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:54,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914957215] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:54,447 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:54,447 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-15 14:46:54,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580465286] [2022-03-15 14:46:54,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:54,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:46:54,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:54,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:46:54,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:46:54,448 INFO L87 Difference]: Start difference. First operand 10669 states and 31472 transitions. Second operand has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:55,669 INFO L93 Difference]: Finished difference Result 12099 states and 35409 transitions. [2022-03-15 14:46:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 14:46:55,670 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:46:55,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:55,691 INFO L225 Difference]: With dead ends: 12099 [2022-03-15 14:46:55,691 INFO L226 Difference]: Without dead ends: 11964 [2022-03-15 14:46:55,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1221, Invalid=7151, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 14:46:55,692 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 527 mSDsluCounter, 3061 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:55,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 3125 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:46:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11964 states. [2022-03-15 14:46:55,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11964 to 10721. [2022-03-15 14:46:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10721 states, 10720 states have (on average 2.9484141791044776) internal successors, (31607), 10720 states have internal predecessors, (31607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10721 states to 10721 states and 31607 transitions. [2022-03-15 14:46:55,860 INFO L78 Accepts]: Start accepts. Automaton has 10721 states and 31607 transitions. Word has length 78 [2022-03-15 14:46:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:55,860 INFO L470 AbstractCegarLoop]: Abstraction has 10721 states and 31607 transitions. [2022-03-15 14:46:55,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9761904761904763) internal successors, (125), 42 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:55,860 INFO L276 IsEmpty]: Start isEmpty. Operand 10721 states and 31607 transitions. [2022-03-15 14:46:55,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:46:55,873 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:55,874 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:55,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:56,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:56,080 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:56,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:56,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2093402461, now seen corresponding path program 153 times [2022-03-15 14:46:56,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:56,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382983344] [2022-03-15 14:46:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:56,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:56,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:56,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382983344] [2022-03-15 14:46:56,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382983344] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:56,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920545485] [2022-03-15 14:46:56,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:46:56,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:56,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:56,193 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:56,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-03-15 14:46:56,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 14:46:56,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:56,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:46:56,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:46:56,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:46:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:46:56,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920545485] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:46:56,773 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:46:56,773 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:46:56,773 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314398264] [2022-03-15 14:46:56,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:46:56,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:46:56,773 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:46:56,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:46:56,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:46:56,774 INFO L87 Difference]: Start difference. First operand 10721 states and 31607 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:46:58,575 INFO L93 Difference]: Finished difference Result 11808 states and 34568 transitions. [2022-03-15 14:46:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-03-15 14:46:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:46:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:46:58,597 INFO L225 Difference]: With dead ends: 11808 [2022-03-15 14:46:58,597 INFO L226 Difference]: Without dead ends: 11569 [2022-03-15 14:46:58,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4614 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1862, Invalid=13144, Unknown=0, NotChecked=0, Total=15006 [2022-03-15 14:46:58,599 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 546 mSDsluCounter, 3951 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:46:58,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 4042 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:46:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11569 states. [2022-03-15 14:46:58,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11569 to 10285. [2022-03-15 14:46:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10285 states, 10284 states have (on average 2.899649941656943) internal successors, (29820), 10284 states have internal predecessors, (29820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10285 states to 10285 states and 29820 transitions. [2022-03-15 14:46:58,775 INFO L78 Accepts]: Start accepts. Automaton has 10285 states and 29820 transitions. Word has length 78 [2022-03-15 14:46:58,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:46:58,775 INFO L470 AbstractCegarLoop]: Abstraction has 10285 states and 29820 transitions. [2022-03-15 14:46:58,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:46:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 10285 states and 29820 transitions. [2022-03-15 14:46:58,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:46:58,789 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:46:58,789 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:46:58,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2022-03-15 14:46:59,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:59,006 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:46:59,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:46:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash -926819967, now seen corresponding path program 154 times [2022-03-15 14:46:59,006 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:46:59,007 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537873276] [2022-03-15 14:46:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:46:59,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:46:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:46:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:59,139 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:46:59,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537873276] [2022-03-15 14:46:59,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537873276] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:46:59,140 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329883570] [2022-03-15 14:46:59,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:46:59,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:46:59,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:46:59,141 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:46:59,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-03-15 14:46:59,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:46:59,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:46:59,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 14:46:59,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:46:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:46:59,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:00,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:00,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329883570] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:00,248 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:00,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-03-15 14:47:00,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954097642] [2022-03-15 14:47:00,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:00,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 14:47:00,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:00,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 14:47:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1801, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:47:00,249 INFO L87 Difference]: Start difference. First operand 10285 states and 29820 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:02,075 INFO L93 Difference]: Finished difference Result 12424 states and 35711 transitions. [2022-03-15 14:47:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-15 14:47:02,075 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:02,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:02,096 INFO L225 Difference]: With dead ends: 12424 [2022-03-15 14:47:02,096 INFO L226 Difference]: Without dead ends: 12322 [2022-03-15 14:47:02,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4013 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1765, Invalid=11807, Unknown=0, NotChecked=0, Total=13572 [2022-03-15 14:47:02,098 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 776 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 3494 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:02,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 3494 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:02,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2022-03-15 14:47:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 10357. [2022-03-15 14:47:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10357 states, 10356 states have (on average 2.898609501738123) internal successors, (30018), 10356 states have internal predecessors, (30018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 30018 transitions. [2022-03-15 14:47:02,297 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 30018 transitions. Word has length 78 [2022-03-15 14:47:02,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:02,297 INFO L470 AbstractCegarLoop]: Abstraction has 10357 states and 30018 transitions. [2022-03-15 14:47:02,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 30018 transitions. [2022-03-15 14:47:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:02,310 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:02,310 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:02,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:02,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:02,512 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:02,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:02,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1986671687, now seen corresponding path program 155 times [2022-03-15 14:47:02,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:02,513 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737897444] [2022-03-15 14:47:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:02,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:02,628 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:02,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737897444] [2022-03-15 14:47:02,628 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737897444] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:02,628 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371770629] [2022-03-15 14:47:02,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:47:02,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:02,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:02,629 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:02,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-03-15 14:47:02,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:47:02,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:02,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:47:02,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:47:02,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:47:03,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371770629] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:03,202 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:03,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:47:03,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960405941] [2022-03-15 14:47:03,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:03,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:47:03,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:03,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:47:03,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:47:03,202 INFO L87 Difference]: Start difference. First operand 10357 states and 30018 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:05,355 INFO L93 Difference]: Finished difference Result 11180 states and 32193 transitions. [2022-03-15 14:47:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-15 14:47:05,355 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:05,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:05,375 INFO L225 Difference]: With dead ends: 11180 [2022-03-15 14:47:05,375 INFO L226 Difference]: Without dead ends: 11077 [2022-03-15 14:47:05,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4372 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2057, Invalid=11985, Unknown=0, NotChecked=0, Total=14042 [2022-03-15 14:47:05,377 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 728 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:05,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 3356 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:05,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2022-03-15 14:47:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 9941. [2022-03-15 14:47:05,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9941 states, 9940 states have (on average 2.8867203219315893) internal successors, (28694), 9940 states have internal predecessors, (28694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 28694 transitions. [2022-03-15 14:47:05,532 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 28694 transitions. Word has length 78 [2022-03-15 14:47:05,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:05,532 INFO L470 AbstractCegarLoop]: Abstraction has 9941 states and 28694 transitions. [2022-03-15 14:47:05,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:05,532 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 28694 transitions. [2022-03-15 14:47:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:05,545 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:05,545 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:05,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:05,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:05,759 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:05,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2025068431, now seen corresponding path program 156 times [2022-03-15 14:47:05,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:05,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520106574] [2022-03-15 14:47:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:05,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:05,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520106574] [2022-03-15 14:47:05,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520106574] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:05,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116609735] [2022-03-15 14:47:05,891 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:47:05,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:05,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:05,893 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:05,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-03-15 14:47:06,061 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 14:47:06,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:06,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:47:06,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:06,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:06,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116609735] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:06,790 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:06,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-15 14:47:06,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789302714] [2022-03-15 14:47:06,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:06,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:47:06,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:06,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:47:06,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1521, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:47:06,791 INFO L87 Difference]: Start difference. First operand 9941 states and 28694 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:08,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:08,611 INFO L93 Difference]: Finished difference Result 12896 states and 36946 transitions. [2022-03-15 14:47:08,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-15 14:47:08,611 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:08,633 INFO L225 Difference]: With dead ends: 12896 [2022-03-15 14:47:08,633 INFO L226 Difference]: Without dead ends: 12810 [2022-03-15 14:47:08,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3448 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1600, Invalid=9956, Unknown=0, NotChecked=0, Total=11556 [2022-03-15 14:47:08,634 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 594 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:08,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 3484 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12810 states. [2022-03-15 14:47:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12810 to 10041. [2022-03-15 14:47:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10041 states, 10040 states have (on average 2.885358565737052) internal successors, (28969), 10040 states have internal predecessors, (28969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10041 states to 10041 states and 28969 transitions. [2022-03-15 14:47:08,812 INFO L78 Accepts]: Start accepts. Automaton has 10041 states and 28969 transitions. Word has length 78 [2022-03-15 14:47:08,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:08,812 INFO L470 AbstractCegarLoop]: Abstraction has 10041 states and 28969 transitions. [2022-03-15 14:47:08,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 10041 states and 28969 transitions. [2022-03-15 14:47:08,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:08,826 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:08,826 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:08,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:09,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2022-03-15 14:47:09,043 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:09,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:09,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1304210485, now seen corresponding path program 157 times [2022-03-15 14:47:09,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:09,043 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000837707] [2022-03-15 14:47:09,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:09,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:09,241 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:09,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000837707] [2022-03-15 14:47:09,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000837707] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:09,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890837233] [2022-03-15 14:47:09,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:47:09,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:09,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:09,243 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:09,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-03-15 14:47:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:09,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:47:09,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:09,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:10,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890837233] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:10,320 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:10,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-15 14:47:10,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938302096] [2022-03-15 14:47:10,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:10,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:47:10,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:10,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:47:10,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1519, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:47:10,321 INFO L87 Difference]: Start difference. First operand 10041 states and 28969 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:12,692 INFO L93 Difference]: Finished difference Result 13244 states and 38083 transitions. [2022-03-15 14:47:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-15 14:47:12,692 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:12,713 INFO L225 Difference]: With dead ends: 13244 [2022-03-15 14:47:12,714 INFO L226 Difference]: Without dead ends: 13158 [2022-03-15 14:47:12,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3981 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1819, Invalid=10837, Unknown=0, NotChecked=0, Total=12656 [2022-03-15 14:47:12,715 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 721 mSDsluCounter, 3554 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:12,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 3647 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:47:12,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13158 states. [2022-03-15 14:47:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13158 to 9961. [2022-03-15 14:47:12,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9961 states, 9960 states have (on average 2.88644578313253) internal successors, (28749), 9960 states have internal predecessors, (28749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 28749 transitions. [2022-03-15 14:47:12,870 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 28749 transitions. Word has length 78 [2022-03-15 14:47:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:12,870 INFO L470 AbstractCegarLoop]: Abstraction has 9961 states and 28749 transitions. [2022-03-15 14:47:12,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 28749 transitions. [2022-03-15 14:47:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:12,882 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:12,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:12,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:13,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2022-03-15 14:47:13,095 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:13,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:13,096 INFO L85 PathProgramCache]: Analyzing trace with hash 460003775, now seen corresponding path program 158 times [2022-03-15 14:47:13,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:13,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698119267] [2022-03-15 14:47:13,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:13,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:13,234 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:13,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698119267] [2022-03-15 14:47:13,234 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698119267] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:13,234 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524110124] [2022-03-15 14:47:13,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:47:13,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:13,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:13,236 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:13,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-03-15 14:47:13,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:47:13,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:13,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:47:13,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:13,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:14,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524110124] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:14,566 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:14,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-15 14:47:14,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584801716] [2022-03-15 14:47:14,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:14,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:47:14,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:47:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:47:14,567 INFO L87 Difference]: Start difference. First operand 9961 states and 28749 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:16,137 INFO L93 Difference]: Finished difference Result 11948 states and 34086 transitions. [2022-03-15 14:47:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 14:47:16,137 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:16,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:16,158 INFO L225 Difference]: With dead ends: 11948 [2022-03-15 14:47:16,158 INFO L226 Difference]: Without dead ends: 11862 [2022-03-15 14:47:16,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2365 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1115, Invalid=7257, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 14:47:16,159 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 476 mSDsluCounter, 4063 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:16,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 4111 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:47:16,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11862 states. [2022-03-15 14:47:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11862 to 10057. [2022-03-15 14:47:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10057 states, 10056 states have (on average 2.885938743038982) internal successors, (29021), 10056 states have internal predecessors, (29021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10057 states to 10057 states and 29021 transitions. [2022-03-15 14:47:16,348 INFO L78 Accepts]: Start accepts. Automaton has 10057 states and 29021 transitions. Word has length 78 [2022-03-15 14:47:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:16,348 INFO L470 AbstractCegarLoop]: Abstraction has 10057 states and 29021 transitions. [2022-03-15 14:47:16,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:16,349 INFO L276 IsEmpty]: Start isEmpty. Operand 10057 states and 29021 transitions. [2022-03-15 14:47:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:16,362 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:16,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:16,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:16,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:16,567 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:16,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:16,568 INFO L85 PathProgramCache]: Analyzing trace with hash -638244689, now seen corresponding path program 159 times [2022-03-15 14:47:16,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:16,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173229055] [2022-03-15 14:47:16,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:16,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:16,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:16,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173229055] [2022-03-15 14:47:16,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173229055] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:16,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788759553] [2022-03-15 14:47:16,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:47:16,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:16,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:16,752 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:16,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-03-15 14:47:16,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:47:16,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:16,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:47:16,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:17,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:47:17,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:47:17,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788759553] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:17,442 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:17,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:47:17,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065150795] [2022-03-15 14:47:17,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:17,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:47:17,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:17,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:47:17,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:47:17,445 INFO L87 Difference]: Start difference. First operand 10057 states and 29021 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:19,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:19,722 INFO L93 Difference]: Finished difference Result 10939 states and 31356 transitions. [2022-03-15 14:47:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-15 14:47:19,722 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:19,739 INFO L225 Difference]: With dead ends: 10939 [2022-03-15 14:47:19,739 INFO L226 Difference]: Without dead ends: 10853 [2022-03-15 14:47:19,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4774 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2099, Invalid=13153, Unknown=0, NotChecked=0, Total=15252 [2022-03-15 14:47:19,741 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 700 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:19,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 3724 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:47:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2022-03-15 14:47:19,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 9813. [2022-03-15 14:47:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9813 states, 9812 states have (on average 2.881165919282511) internal successors, (28270), 9812 states have internal predecessors, (28270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9813 states to 9813 states and 28270 transitions. [2022-03-15 14:47:19,880 INFO L78 Accepts]: Start accepts. Automaton has 9813 states and 28270 transitions. Word has length 78 [2022-03-15 14:47:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:19,880 INFO L470 AbstractCegarLoop]: Abstraction has 9813 states and 28270 transitions. [2022-03-15 14:47:19,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 9813 states and 28270 transitions. [2022-03-15 14:47:19,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:19,891 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:19,891 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:19,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:20,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:20,107 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:20,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:20,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1603933069, now seen corresponding path program 160 times [2022-03-15 14:47:20,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:20,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094218864] [2022-03-15 14:47:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:20,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:20,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:20,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094218864] [2022-03-15 14:47:20,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094218864] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:20,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973741428] [2022-03-15 14:47:20,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:47:20,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:20,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:20,262 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:20,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-03-15 14:47:20,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:47:20,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:20,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 14:47:20,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:20,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:21,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973741428] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:21,355 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:21,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-03-15 14:47:21,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018171983] [2022-03-15 14:47:21,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:21,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 14:47:21,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:21,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 14:47:21,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1810, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:47:21,356 INFO L87 Difference]: Start difference. First operand 9813 states and 28270 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:24,300 INFO L93 Difference]: Finished difference Result 12362 states and 35437 transitions. [2022-03-15 14:47:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-15 14:47:24,300 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:24,322 INFO L225 Difference]: With dead ends: 12362 [2022-03-15 14:47:24,323 INFO L226 Difference]: Without dead ends: 12276 [2022-03-15 14:47:24,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7188 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2692, Invalid=19360, Unknown=0, NotChecked=0, Total=22052 [2022-03-15 14:47:24,325 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 1182 mSDsluCounter, 4254 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:24,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 4279 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:47:24,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2022-03-15 14:47:24,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 10205. [2022-03-15 14:47:24,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10205 states, 10204 states have (on average 2.8808310466483733) internal successors, (29396), 10204 states have internal predecessors, (29396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10205 states to 10205 states and 29396 transitions. [2022-03-15 14:47:24,508 INFO L78 Accepts]: Start accepts. Automaton has 10205 states and 29396 transitions. Word has length 78 [2022-03-15 14:47:24,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:24,509 INFO L470 AbstractCegarLoop]: Abstraction has 10205 states and 29396 transitions. [2022-03-15 14:47:24,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 10205 states and 29396 transitions. [2022-03-15 14:47:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:24,522 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:24,523 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:24,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:24,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:24,730 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:24,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1563789765, now seen corresponding path program 161 times [2022-03-15 14:47:24,730 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:24,730 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730969285] [2022-03-15 14:47:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:24,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:24,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:24,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730969285] [2022-03-15 14:47:24,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730969285] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:24,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130706588] [2022-03-15 14:47:24,860 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:47:24,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:24,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:24,861 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:24,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-03-15 14:47:24,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 14:47:24,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:24,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:47:24,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:47:25,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:47:25,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130706588] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:25,440 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:25,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:47:25,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746652428] [2022-03-15 14:47:25,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:25,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:47:25,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:25,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:47:25,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:47:25,441 INFO L87 Difference]: Start difference. First operand 10205 states and 29396 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:27,289 INFO L93 Difference]: Finished difference Result 11576 states and 33122 transitions. [2022-03-15 14:47:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-15 14:47:27,290 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:27,310 INFO L225 Difference]: With dead ends: 11576 [2022-03-15 14:47:27,310 INFO L226 Difference]: Without dead ends: 11469 [2022-03-15 14:47:27,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3105 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1345, Invalid=9367, Unknown=0, NotChecked=0, Total=10712 [2022-03-15 14:47:27,311 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 443 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:27,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 3649 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:47:27,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11469 states. [2022-03-15 14:47:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11469 to 10457. [2022-03-15 14:47:27,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10457 states, 10456 states have (on average 2.861610558530987) internal successors, (29921), 10456 states have internal predecessors, (29921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10457 states to 10457 states and 29921 transitions. [2022-03-15 14:47:27,490 INFO L78 Accepts]: Start accepts. Automaton has 10457 states and 29921 transitions. Word has length 78 [2022-03-15 14:47:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:27,490 INFO L470 AbstractCegarLoop]: Abstraction has 10457 states and 29921 transitions. [2022-03-15 14:47:27,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:27,490 INFO L276 IsEmpty]: Start isEmpty. Operand 10457 states and 29921 transitions. [2022-03-15 14:47:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:27,503 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:27,503 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:27,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:27,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:27,711 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:27,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:27,712 INFO L85 PathProgramCache]: Analyzing trace with hash 948913081, now seen corresponding path program 162 times [2022-03-15 14:47:27,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:27,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260902789] [2022-03-15 14:47:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:27,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:27,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:27,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260902789] [2022-03-15 14:47:27,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260902789] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:27,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998985234] [2022-03-15 14:47:27,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:47:27,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:27,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:27,855 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:27,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-03-15 14:47:27,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 14:47:27,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:27,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:47:27,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:28,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:29,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998985234] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:29,069 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:29,069 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-15 14:47:29,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581301371] [2022-03-15 14:47:29,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:29,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:47:29,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:29,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:47:29,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1554, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:47:29,070 INFO L87 Difference]: Start difference. First operand 10457 states and 29921 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:30,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:30,723 INFO L93 Difference]: Finished difference Result 12144 states and 34460 transitions. [2022-03-15 14:47:30,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 14:47:30,723 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:30,743 INFO L225 Difference]: With dead ends: 12144 [2022-03-15 14:47:30,743 INFO L226 Difference]: Without dead ends: 12078 [2022-03-15 14:47:30,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2398 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=995, Invalid=7377, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 14:47:30,746 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 461 mSDsluCounter, 3993 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:30,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 4027 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:30,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12078 states. [2022-03-15 14:47:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12078 to 10461. [2022-03-15 14:47:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10461 states, 10460 states have (on average 2.861567877629063) internal successors, (29932), 10460 states have internal predecessors, (29932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 29932 transitions. [2022-03-15 14:47:30,975 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 29932 transitions. Word has length 78 [2022-03-15 14:47:30,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:30,975 INFO L470 AbstractCegarLoop]: Abstraction has 10461 states and 29932 transitions. [2022-03-15 14:47:30,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 29932 transitions. [2022-03-15 14:47:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:30,988 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:30,988 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:31,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:31,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2022-03-15 14:47:31,205 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:31,206 INFO L85 PathProgramCache]: Analyzing trace with hash -206351307, now seen corresponding path program 163 times [2022-03-15 14:47:31,206 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:31,206 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487057525] [2022-03-15 14:47:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:31,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:31,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:31,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487057525] [2022-03-15 14:47:31,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487057525] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:31,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774541552] [2022-03-15 14:47:31,323 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:47:31,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:31,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:31,325 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:31,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-03-15 14:47:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:31,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:47:31,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:31,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:32,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774541552] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:32,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:32,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-15 14:47:32,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266404313] [2022-03-15 14:47:32,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:32,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:47:32,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:32,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:47:32,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:47:32,163 INFO L87 Difference]: Start difference. First operand 10461 states and 29932 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:34,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:34,256 INFO L93 Difference]: Finished difference Result 13518 states and 38297 transitions. [2022-03-15 14:47:34,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-15 14:47:34,256 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:34,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:34,282 INFO L225 Difference]: With dead ends: 13518 [2022-03-15 14:47:34,283 INFO L226 Difference]: Without dead ends: 13440 [2022-03-15 14:47:34,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3711 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1553, Invalid=10657, Unknown=0, NotChecked=0, Total=12210 [2022-03-15 14:47:34,284 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 523 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:34,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 3907 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:34,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13440 states. [2022-03-15 14:47:34,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13440 to 10609. [2022-03-15 14:47:34,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10609 states, 10608 states have (on average 2.8611425339366514) internal successors, (30351), 10608 states have internal predecessors, (30351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10609 states to 10609 states and 30351 transitions. [2022-03-15 14:47:34,496 INFO L78 Accepts]: Start accepts. Automaton has 10609 states and 30351 transitions. Word has length 78 [2022-03-15 14:47:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:34,496 INFO L470 AbstractCegarLoop]: Abstraction has 10609 states and 30351 transitions. [2022-03-15 14:47:34,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 10609 states and 30351 transitions. [2022-03-15 14:47:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:34,511 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:34,511 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:34,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:34,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:34,721 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:34,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:34,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1628909515, now seen corresponding path program 164 times [2022-03-15 14:47:34,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:34,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178928834] [2022-03-15 14:47:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:34,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:34,881 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:34,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178928834] [2022-03-15 14:47:34,881 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178928834] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:34,881 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082938523] [2022-03-15 14:47:34,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:47:34,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:34,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:34,883 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:34,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-03-15 14:47:35,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:47:35,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:35,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:47:35,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:35,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:35,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082938523] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:35,904 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:35,904 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-15 14:47:35,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136501291] [2022-03-15 14:47:35,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:35,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:47:35,904 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:35,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:47:35,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:47:35,905 INFO L87 Difference]: Start difference. First operand 10609 states and 30351 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:38,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:38,175 INFO L93 Difference]: Finished difference Result 12814 states and 36301 transitions. [2022-03-15 14:47:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-15 14:47:38,176 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:38,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:38,197 INFO L225 Difference]: With dead ends: 12814 [2022-03-15 14:47:38,198 INFO L226 Difference]: Without dead ends: 12748 [2022-03-15 14:47:38,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4148 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1593, Invalid=12213, Unknown=0, NotChecked=0, Total=13806 [2022-03-15 14:47:38,200 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 661 mSDsluCounter, 4318 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 4335 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:38,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 4335 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:47:38,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12748 states. [2022-03-15 14:47:38,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12748 to 10709. [2022-03-15 14:47:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10709 states, 10708 states have (on average 2.860104594695555) internal successors, (30626), 10708 states have internal predecessors, (30626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10709 states to 10709 states and 30626 transitions. [2022-03-15 14:47:38,377 INFO L78 Accepts]: Start accepts. Automaton has 10709 states and 30626 transitions. Word has length 78 [2022-03-15 14:47:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:38,377 INFO L470 AbstractCegarLoop]: Abstraction has 10709 states and 30626 transitions. [2022-03-15 14:47:38,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 10709 states and 30626 transitions. [2022-03-15 14:47:38,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:38,390 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:38,390 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:38,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:38,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:38,606 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:38,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:38,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1510793393, now seen corresponding path program 165 times [2022-03-15 14:47:38,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:38,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378664698] [2022-03-15 14:47:38,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:38,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:38,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:38,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378664698] [2022-03-15 14:47:38,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378664698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:38,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698786131] [2022-03-15 14:47:38,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:47:38,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:38,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:38,729 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:38,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-03-15 14:47:38,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:47:38,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:38,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:47:38,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:47:39,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:39,348 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:47:39,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698786131] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:39,349 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:39,349 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:47:39,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421970874] [2022-03-15 14:47:39,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:39,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:47:39,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:39,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:47:39,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:47:39,349 INFO L87 Difference]: Start difference. First operand 10709 states and 30626 transitions. Second operand has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:41,371 INFO L93 Difference]: Finished difference Result 14463 states and 41355 transitions. [2022-03-15 14:47:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-15 14:47:41,371 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:41,400 INFO L225 Difference]: With dead ends: 14463 [2022-03-15 14:47:41,400 INFO L226 Difference]: Without dead ends: 14385 [2022-03-15 14:47:41,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4950 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1977, Invalid=13773, Unknown=0, NotChecked=0, Total=15750 [2022-03-15 14:47:41,402 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 581 mSDsluCounter, 5165 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 5216 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:41,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 5216 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:47:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14385 states. [2022-03-15 14:47:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14385 to 11217. [2022-03-15 14:47:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11217 states, 11216 states have (on average 2.8690263908701854) internal successors, (32179), 11216 states have internal predecessors, (32179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11217 states to 11217 states and 32179 transitions. [2022-03-15 14:47:41,592 INFO L78 Accepts]: Start accepts. Automaton has 11217 states and 32179 transitions. Word has length 78 [2022-03-15 14:47:41,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:41,592 INFO L470 AbstractCegarLoop]: Abstraction has 11217 states and 32179 transitions. [2022-03-15 14:47:41,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.27027027027027) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:41,592 INFO L276 IsEmpty]: Start isEmpty. Operand 11217 states and 32179 transitions. [2022-03-15 14:47:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:41,605 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:41,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:41,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2022-03-15 14:47:41,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:41,821 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:41,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:41,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1726214867, now seen corresponding path program 166 times [2022-03-15 14:47:41,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:41,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728289825] [2022-03-15 14:47:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:41,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:41,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:41,935 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:41,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728289825] [2022-03-15 14:47:41,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728289825] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:41,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373735395] [2022-03-15 14:47:41,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:47:41,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:41,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:41,937 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:41,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-03-15 14:47:42,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:47:42,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:42,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 14:47:42,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:42,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:42,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373735395] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:42,725 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:42,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 40 [2022-03-15 14:47:42,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362680978] [2022-03-15 14:47:42,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:42,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-15 14:47:42,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-15 14:47:42,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 14:47:42,726 INFO L87 Difference]: Start difference. First operand 11217 states and 32179 transitions. Second operand has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:46,646 INFO L93 Difference]: Finished difference Result 15620 states and 44125 transitions. [2022-03-15 14:47:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-03-15 14:47:46,647 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:46,673 INFO L225 Difference]: With dead ends: 15620 [2022-03-15 14:47:46,673 INFO L226 Difference]: Without dead ends: 15395 [2022-03-15 14:47:46,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9696 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3125, Invalid=23935, Unknown=0, NotChecked=0, Total=27060 [2022-03-15 14:47:46,675 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 976 mSDsluCounter, 5097 mSDsCounter, 0 mSdLazyCounter, 2845 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 5058 SdHoareTripleChecker+Invalid, 3052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:46,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 5058 Invalid, 3052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2845 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:47:46,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15395 states. [2022-03-15 14:47:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15395 to 11897. [2022-03-15 14:47:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11897 states, 11896 states have (on average 2.8639038332212507) internal successors, (34069), 11896 states have internal predecessors, (34069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11897 states to 11897 states and 34069 transitions. [2022-03-15 14:47:46,876 INFO L78 Accepts]: Start accepts. Automaton has 11897 states and 34069 transitions. Word has length 78 [2022-03-15 14:47:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:46,876 INFO L470 AbstractCegarLoop]: Abstraction has 11897 states and 34069 transitions. [2022-03-15 14:47:46,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 11897 states and 34069 transitions. [2022-03-15 14:47:46,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:46,891 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:46,891 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:46,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2022-03-15 14:47:47,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:47,096 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:47,096 INFO L85 PathProgramCache]: Analyzing trace with hash 143966545, now seen corresponding path program 167 times [2022-03-15 14:47:47,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:47,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938286928] [2022-03-15 14:47:47,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:47,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:47,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:47,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938286928] [2022-03-15 14:47:47,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938286928] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:47,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050697738] [2022-03-15 14:47:47,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:47:47,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:47,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:47,228 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:47,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-03-15 14:47:47,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:47:47,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:47,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:47:47,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:47,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:48,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050697738] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:48,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:48,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-15 14:47:48,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974540285] [2022-03-15 14:47:48,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:48,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:47:48,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:48,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:47:48,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:47:48,353 INFO L87 Difference]: Start difference. First operand 11897 states and 34069 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:50,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:50,486 INFO L93 Difference]: Finished difference Result 13940 states and 39519 transitions. [2022-03-15 14:47:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-15 14:47:50,486 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:50,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:50,509 INFO L225 Difference]: With dead ends: 13940 [2022-03-15 14:47:50,509 INFO L226 Difference]: Without dead ends: 13859 [2022-03-15 14:47:50,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4911 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1745, Invalid=13507, Unknown=0, NotChecked=0, Total=15252 [2022-03-15 14:47:50,511 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 741 mSDsluCounter, 5411 mSDsCounter, 0 mSdLazyCounter, 2639 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 5375 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:50,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 5375 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2639 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:47:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13859 states. [2022-03-15 14:47:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13859 to 12025. [2022-03-15 14:47:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12025 states, 12024 states have (on average 2.8660179640718564) internal successors, (34461), 12024 states have internal predecessors, (34461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12025 states to 12025 states and 34461 transitions. [2022-03-15 14:47:50,691 INFO L78 Accepts]: Start accepts. Automaton has 12025 states and 34461 transitions. Word has length 78 [2022-03-15 14:47:50,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:50,691 INFO L470 AbstractCegarLoop]: Abstraction has 12025 states and 34461 transitions. [2022-03-15 14:47:50,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:50,691 INFO L276 IsEmpty]: Start isEmpty. Operand 12025 states and 34461 transitions. [2022-03-15 14:47:50,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:50,705 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:50,706 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:50,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:50,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2022-03-15 14:47:50,919 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:50,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1172360911, now seen corresponding path program 168 times [2022-03-15 14:47:50,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:50,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530238968] [2022-03-15 14:47:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:50,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:51,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:51,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:51,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530238968] [2022-03-15 14:47:51,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530238968] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:51,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948932394] [2022-03-15 14:47:51,033 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:47:51,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:51,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:51,034 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:51,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-03-15 14:47:51,195 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 14:47:51,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:47:51,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:47:51,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:47:51,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:47:51,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948932394] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:51,638 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:51,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:47:51,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477244634] [2022-03-15 14:47:51,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:51,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:47:51,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:51,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:47:51,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:47:51,639 INFO L87 Difference]: Start difference. First operand 12025 states and 34461 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:53,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:53,889 INFO L93 Difference]: Finished difference Result 16073 states and 45915 transitions. [2022-03-15 14:47:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-03-15 14:47:53,889 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:53,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:53,920 INFO L225 Difference]: With dead ends: 16073 [2022-03-15 14:47:53,920 INFO L226 Difference]: Without dead ends: 15949 [2022-03-15 14:47:53,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8543 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3534, Invalid=21588, Unknown=0, NotChecked=0, Total=25122 [2022-03-15 14:47:53,922 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1001 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:53,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 3174 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:47:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15949 states. [2022-03-15 14:47:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15949 to 5553. [2022-03-15 14:47:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 5552 states have (on average 2.8405979827089336) internal successors, (15771), 5552 states have internal predecessors, (15771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 15771 transitions. [2022-03-15 14:47:54,090 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 15771 transitions. Word has length 78 [2022-03-15 14:47:54,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:54,090 INFO L470 AbstractCegarLoop]: Abstraction has 5553 states and 15771 transitions. [2022-03-15 14:47:54,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:54,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 15771 transitions. [2022-03-15 14:47:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:54,097 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:54,097 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:54,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2022-03-15 14:47:54,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:54,305 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:54,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash 315095993, now seen corresponding path program 169 times [2022-03-15 14:47:54,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:54,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651940027] [2022-03-15 14:47:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:54,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:54,416 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:54,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651940027] [2022-03-15 14:47:54,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651940027] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:54,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625368718] [2022-03-15 14:47:54,416 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:47:54,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:54,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:54,417 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:54,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-03-15 14:47:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:54,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:47:54,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:47:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:54,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:47:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:55,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625368718] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:47:55,253 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:47:55,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-15 14:47:55,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533020724] [2022-03-15 14:47:55,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:47:55,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 14:47:55,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:47:55,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 14:47:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:47:55,254 INFO L87 Difference]: Start difference. First operand 5553 states and 15771 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:59,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:47:59,512 INFO L93 Difference]: Finished difference Result 8553 states and 23935 transitions. [2022-03-15 14:47:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-03-15 14:47:59,513 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:47:59,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:47:59,526 INFO L225 Difference]: With dead ends: 8553 [2022-03-15 14:47:59,527 INFO L226 Difference]: Without dead ends: 8472 [2022-03-15 14:47:59,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13300 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3909, Invalid=33147, Unknown=0, NotChecked=0, Total=37056 [2022-03-15 14:47:59,530 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 786 mSDsluCounter, 4993 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 4988 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:47:59,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 4988 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:47:59,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8472 states. [2022-03-15 14:47:59,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8472 to 5817. [2022-03-15 14:47:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 5816 states have (on average 2.8371733149931226) internal successors, (16501), 5816 states have internal predecessors, (16501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 16501 transitions. [2022-03-15 14:47:59,618 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 16501 transitions. Word has length 78 [2022-03-15 14:47:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:47:59,618 INFO L470 AbstractCegarLoop]: Abstraction has 5817 states and 16501 transitions. [2022-03-15 14:47:59,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:47:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 16501 transitions. [2022-03-15 14:47:59,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:47:59,624 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:47:59,624 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:47:59,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2022-03-15 14:47:59,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2022-03-15 14:47:59,831 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:47:59,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:47:59,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2087972053, now seen corresponding path program 170 times [2022-03-15 14:47:59,832 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:47:59,832 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326901410] [2022-03-15 14:47:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:47:59,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:47:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:47:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:47:59,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:47:59,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326901410] [2022-03-15 14:47:59,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326901410] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:47:59,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648919300] [2022-03-15 14:47:59,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:47:59,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:47:59,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:47:59,947 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:47:59,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-03-15 14:48:00,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:48:00,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:48:00,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:48:00,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:48:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:00,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:48:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:00,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648919300] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:48:00,882 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:48:00,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-15 14:48:00,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413301871] [2022-03-15 14:48:00,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:48:00,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 14:48:00,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:00,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 14:48:00,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1483, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:48:00,883 INFO L87 Difference]: Start difference. First operand 5817 states and 16501 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:04,800 INFO L93 Difference]: Finished difference Result 8475 states and 23655 transitions. [2022-03-15 14:48:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-03-15 14:48:04,801 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:48:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:04,814 INFO L225 Difference]: With dead ends: 8475 [2022-03-15 14:48:04,814 INFO L226 Difference]: Without dead ends: 8394 [2022-03-15 14:48:04,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7756 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2589, Invalid=20363, Unknown=0, NotChecked=0, Total=22952 [2022-03-15 14:48:04,817 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 865 mSDsluCounter, 5557 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 5479 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:04,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 5479 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:48:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8394 states. [2022-03-15 14:48:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8394 to 6105. [2022-03-15 14:48:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6105 states, 6104 states have (on average 2.838302752293578) internal successors, (17325), 6104 states have internal predecessors, (17325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 17325 transitions. [2022-03-15 14:48:04,918 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 17325 transitions. Word has length 78 [2022-03-15 14:48:04,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:04,918 INFO L470 AbstractCegarLoop]: Abstraction has 6105 states and 17325 transitions. [2022-03-15 14:48:04,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:04,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 17325 transitions. [2022-03-15 14:48:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:48:04,926 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:04,926 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:04,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Forceful destruction successful, exit code 0 [2022-03-15 14:48:05,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-03-15 14:48:05,139 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:05,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1315963339, now seen corresponding path program 171 times [2022-03-15 14:48:05,140 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:05,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314881357] [2022-03-15 14:48:05,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:05,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:48:05,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:05,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314881357] [2022-03-15 14:48:05,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314881357] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:48:05,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681294464] [2022-03-15 14:48:05,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:48:05,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:05,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:48:05,336 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:48:05,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-03-15 14:48:05,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:48:05,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:48:05,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:48:05,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:48:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:48:05,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:48:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:48:06,000 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681294464] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:48:06,000 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:48:06,001 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 36 [2022-03-15 14:48:06,001 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271626502] [2022-03-15 14:48:06,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:48:06,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 14:48:06,001 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 14:48:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:48:06,001 INFO L87 Difference]: Start difference. First operand 6105 states and 17325 transitions. Second operand has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:08,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:08,225 INFO L93 Difference]: Finished difference Result 7797 states and 21911 transitions. [2022-03-15 14:48:08,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-03-15 14:48:08,225 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:48:08,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:08,264 INFO L225 Difference]: With dead ends: 7797 [2022-03-15 14:48:08,264 INFO L226 Difference]: Without dead ends: 7731 [2022-03-15 14:48:08,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8673 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3430, Invalid=21692, Unknown=0, NotChecked=0, Total=25122 [2022-03-15 14:48:08,265 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 748 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 3629 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:08,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 3629 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:48:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2022-03-15 14:48:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 5501. [2022-03-15 14:48:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5501 states, 5500 states have (on average 2.829818181818182) internal successors, (15564), 5500 states have internal predecessors, (15564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5501 states to 5501 states and 15564 transitions. [2022-03-15 14:48:08,336 INFO L78 Accepts]: Start accepts. Automaton has 5501 states and 15564 transitions. Word has length 78 [2022-03-15 14:48:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:08,336 INFO L470 AbstractCegarLoop]: Abstraction has 5501 states and 15564 transitions. [2022-03-15 14:48:08,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3055555555555554) internal successors, (119), 36 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5501 states and 15564 transitions. [2022-03-15 14:48:08,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:48:08,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:08,342 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:08,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Forceful destruction successful, exit code 0 [2022-03-15 14:48:08,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2022-03-15 14:48:08,555 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:08,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1749447751, now seen corresponding path program 172 times [2022-03-15 14:48:08,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:08,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587036770] [2022-03-15 14:48:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:08,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:08,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587036770] [2022-03-15 14:48:08,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587036770] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:48:08,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368805372] [2022-03-15 14:48:08,658 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:48:08,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:08,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:48:08,659 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:48:08,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-03-15 14:48:08,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:48:08,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:48:08,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 14:48:08,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:48:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:09,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:48:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:09,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368805372] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:48:09,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:48:09,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 36 [2022-03-15 14:48:09,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498625813] [2022-03-15 14:48:09,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:48:09,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 14:48:09,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:09,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 14:48:09,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:48:09,565 INFO L87 Difference]: Start difference. First operand 5501 states and 15564 transitions. Second operand has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:13,834 INFO L93 Difference]: Finished difference Result 10735 states and 30047 transitions. [2022-03-15 14:48:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-03-15 14:48:13,835 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:48:13,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:13,849 INFO L225 Difference]: With dead ends: 10735 [2022-03-15 14:48:13,849 INFO L226 Difference]: Without dead ends: 10567 [2022-03-15 14:48:13,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12559 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4629, Invalid=28313, Unknown=0, NotChecked=0, Total=32942 [2022-03-15 14:48:13,851 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1101 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 3749 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:13,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 3749 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:48:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2022-03-15 14:48:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 7401. [2022-03-15 14:48:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7401 states, 7400 states have (on average 2.877972972972973) internal successors, (21297), 7400 states have internal predecessors, (21297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:13,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7401 states to 7401 states and 21297 transitions. [2022-03-15 14:48:13,974 INFO L78 Accepts]: Start accepts. Automaton has 7401 states and 21297 transitions. Word has length 78 [2022-03-15 14:48:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:13,974 INFO L470 AbstractCegarLoop]: Abstraction has 7401 states and 21297 transitions. [2022-03-15 14:48:13,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 7401 states and 21297 transitions. [2022-03-15 14:48:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:48:13,983 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:13,983 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:13,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Ended with exit code 0 [2022-03-15 14:48:14,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:14,200 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:14,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:14,200 INFO L85 PathProgramCache]: Analyzing trace with hash 623584733, now seen corresponding path program 173 times [2022-03-15 14:48:14,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:14,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717103002] [2022-03-15 14:48:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:14,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:14,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:14,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717103002] [2022-03-15 14:48:14,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717103002] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:48:14,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297859035] [2022-03-15 14:48:14,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:48:14,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:14,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:48:14,368 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:48:14,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-03-15 14:48:14,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:48:14,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:48:14,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:48:14,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:48:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:14,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:48:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:15,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297859035] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:48:15,280 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:48:15,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 46 [2022-03-15 14:48:15,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552304560] [2022-03-15 14:48:15,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:48:15,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-15 14:48:15,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-15 14:48:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1891, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:48:15,281 INFO L87 Difference]: Start difference. First operand 7401 states and 21297 transitions. Second operand has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:27,025 INFO L93 Difference]: Finished difference Result 19985 states and 56953 transitions. [2022-03-15 14:48:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 312 states. [2022-03-15 14:48:27,025 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:48:27,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:27,061 INFO L225 Difference]: With dead ends: 19985 [2022-03-15 14:48:27,061 INFO L226 Difference]: Without dead ends: 19759 [2022-03-15 14:48:27,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49321 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=13607, Invalid=107149, Unknown=0, NotChecked=0, Total=120756 [2022-03-15 14:48:27,068 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 2095 mSDsluCounter, 7381 mSDsCounter, 0 mSdLazyCounter, 4201 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 7343 SdHoareTripleChecker+Invalid, 4670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 4201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:27,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2095 Valid, 7343 Invalid, 4670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 4201 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 14:48:27,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19759 states. [2022-03-15 14:48:27,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19759 to 11256. [2022-03-15 14:48:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11256 states, 11255 states have (on average 2.9018214127054645) internal successors, (32660), 11255 states have internal predecessors, (32660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11256 states to 11256 states and 32660 transitions. [2022-03-15 14:48:27,294 INFO L78 Accepts]: Start accepts. Automaton has 11256 states and 32660 transitions. Word has length 78 [2022-03-15 14:48:27,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:27,294 INFO L470 AbstractCegarLoop]: Abstraction has 11256 states and 32660 transitions. [2022-03-15 14:48:27,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 11256 states and 32660 transitions. [2022-03-15 14:48:27,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:48:27,308 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:27,308 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:27,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Forceful destruction successful, exit code 0 [2022-03-15 14:48:27,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:27,525 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:27,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:27,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1716786247, now seen corresponding path program 174 times [2022-03-15 14:48:27,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:27,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080524043] [2022-03-15 14:48:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:27,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:27,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:27,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080524043] [2022-03-15 14:48:27,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080524043] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:48:27,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545910006] [2022-03-15 14:48:27,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:48:27,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:27,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:48:27,630 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:48:27,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-03-15 14:48:27,782 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:48:27,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:48:27,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:48:27,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:48:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:28,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:48:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:28,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545910006] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:48:28,525 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:48:28,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 46 [2022-03-15 14:48:28,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084905292] [2022-03-15 14:48:28,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:48:28,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-15 14:48:28,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:28,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-15 14:48:28,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1901, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 14:48:28,526 INFO L87 Difference]: Start difference. First operand 11256 states and 32660 transitions. Second operand has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:38,217 INFO L93 Difference]: Finished difference Result 19167 states and 54528 transitions. [2022-03-15 14:48:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2022-03-15 14:48:38,217 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:48:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:38,249 INFO L225 Difference]: With dead ends: 19167 [2022-03-15 14:48:38,250 INFO L226 Difference]: Without dead ends: 18556 [2022-03-15 14:48:38,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39536 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=11399, Invalid=88141, Unknown=0, NotChecked=0, Total=99540 [2022-03-15 14:48:38,257 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 2008 mSDsluCounter, 6652 mSDsCounter, 0 mSdLazyCounter, 3456 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 6649 SdHoareTripleChecker+Invalid, 3900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 3456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:38,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2008 Valid, 6649 Invalid, 3900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 3456 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:48:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18556 states. [2022-03-15 14:48:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18556 to 11624. [2022-03-15 14:48:38,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11624 states, 11623 states have (on average 2.8925406521552093) internal successors, (33620), 11623 states have internal predecessors, (33620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:38,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11624 states to 11624 states and 33620 transitions. [2022-03-15 14:48:38,478 INFO L78 Accepts]: Start accepts. Automaton has 11624 states and 33620 transitions. Word has length 78 [2022-03-15 14:48:38,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:38,479 INFO L470 AbstractCegarLoop]: Abstraction has 11624 states and 33620 transitions. [2022-03-15 14:48:38,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9782608695652173) internal successors, (137), 46 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 11624 states and 33620 transitions. [2022-03-15 14:48:38,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:48:38,493 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:38,493 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:38,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Forceful destruction successful, exit code 0 [2022-03-15 14:48:38,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2022-03-15 14:48:38,700 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:38,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash -115417865, now seen corresponding path program 175 times [2022-03-15 14:48:38,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:38,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330295408] [2022-03-15 14:48:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:38,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:38,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:38,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330295408] [2022-03-15 14:48:38,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330295408] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:48:38,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183114393] [2022-03-15 14:48:38,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:48:38,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:38,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:48:38,956 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:48:38,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-03-15 14:48:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:39,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:48:39,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:48:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:39,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:48:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:39,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183114393] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:48:39,789 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:48:39,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-15 14:48:39,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804629666] [2022-03-15 14:48:39,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:48:39,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 14:48:39,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:39,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 14:48:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1477, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:48:39,790 INFO L87 Difference]: Start difference. First operand 11624 states and 33620 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:47,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:47,476 INFO L93 Difference]: Finished difference Result 23195 states and 66287 transitions. [2022-03-15 14:48:47,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-03-15 14:48:47,477 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:48:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:47,518 INFO L225 Difference]: With dead ends: 23195 [2022-03-15 14:48:47,518 INFO L226 Difference]: Without dead ends: 22407 [2022-03-15 14:48:47,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21092 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=7444, Invalid=46612, Unknown=0, NotChecked=0, Total=54056 [2022-03-15 14:48:47,522 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 1334 mSDsluCounter, 5159 mSDsCounter, 0 mSdLazyCounter, 2906 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 5180 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:47,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 5180 Invalid, 3124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2906 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:48:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22407 states. [2022-03-15 14:48:47,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22407 to 13840. [2022-03-15 14:48:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13840 states, 13839 states have (on average 2.907001951008021) internal successors, (40230), 13839 states have internal predecessors, (40230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13840 states to 13840 states and 40230 transitions. [2022-03-15 14:48:47,809 INFO L78 Accepts]: Start accepts. Automaton has 13840 states and 40230 transitions. Word has length 78 [2022-03-15 14:48:47,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:47,809 INFO L470 AbstractCegarLoop]: Abstraction has 13840 states and 40230 transitions. [2022-03-15 14:48:47,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:47,809 INFO L276 IsEmpty]: Start isEmpty. Operand 13840 states and 40230 transitions. [2022-03-15 14:48:47,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:48:47,828 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:47,828 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:47,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Ended with exit code 0 [2022-03-15 14:48:48,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:48,043 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:48,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:48,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1870701639, now seen corresponding path program 176 times [2022-03-15 14:48:48,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:48,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086550579] [2022-03-15 14:48:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:48,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:48,192 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:48,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086550579] [2022-03-15 14:48:48,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086550579] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:48:48,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038080625] [2022-03-15 14:48:48,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:48:48,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:48,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:48:48,194 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:48:48,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-03-15 14:48:48,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:48:48,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:48:48,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:48:48,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:48:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:48,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:48:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:49,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038080625] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:48:49,455 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:48:49,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-15 14:48:49,456 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573066871] [2022-03-15 14:48:49,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:48:49,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:48:49,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:48:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:48:49,457 INFO L87 Difference]: Start difference. First operand 13840 states and 40230 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:51,673 INFO L93 Difference]: Finished difference Result 18287 states and 52330 transitions. [2022-03-15 14:48:51,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-15 14:48:51,673 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:48:51,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:51,706 INFO L225 Difference]: With dead ends: 18287 [2022-03-15 14:48:51,706 INFO L226 Difference]: Without dead ends: 18221 [2022-03-15 14:48:51,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3545 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1658, Invalid=10774, Unknown=0, NotChecked=0, Total=12432 [2022-03-15 14:48:51,708 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 575 mSDsluCounter, 4155 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 4196 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:51,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 4196 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:48:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18221 states. [2022-03-15 14:48:51,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18221 to 14184. [2022-03-15 14:48:51,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14184 states, 14183 states have (on average 2.9110907424381303) internal successors, (41288), 14183 states have internal predecessors, (41288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14184 states to 14184 states and 41288 transitions. [2022-03-15 14:48:52,001 INFO L78 Accepts]: Start accepts. Automaton has 14184 states and 41288 transitions. Word has length 78 [2022-03-15 14:48:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:52,001 INFO L470 AbstractCegarLoop]: Abstraction has 14184 states and 41288 transitions. [2022-03-15 14:48:52,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand 14184 states and 41288 transitions. [2022-03-15 14:48:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:48:52,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:52,025 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:52,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Forceful destruction successful, exit code 0 [2022-03-15 14:48:52,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:52,243 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:52,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:52,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1302268113, now seen corresponding path program 177 times [2022-03-15 14:48:52,244 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:52,244 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527911826] [2022-03-15 14:48:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:52,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:52,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:52,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527911826] [2022-03-15 14:48:52,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527911826] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:48:52,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737534099] [2022-03-15 14:48:52,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:48:52,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:52,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:48:52,399 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:48:52,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2022-03-15 14:48:52,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:48:52,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:48:52,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:48:52,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:48:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:48:52,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:48:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:48:53,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737534099] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:48:53,103 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:48:53,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 36 [2022-03-15 14:48:53,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623713004] [2022-03-15 14:48:53,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:48:53,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 14:48:53,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:53,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 14:48:53,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1137, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:48:53,104 INFO L87 Difference]: Start difference. First operand 14184 states and 41288 transitions. Second operand has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:55,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:48:55,575 INFO L93 Difference]: Finished difference Result 21124 states and 61585 transitions. [2022-03-15 14:48:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-15 14:48:55,575 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:48:55,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:48:55,617 INFO L225 Difference]: With dead ends: 21124 [2022-03-15 14:48:55,617 INFO L226 Difference]: Without dead ends: 20256 [2022-03-15 14:48:55,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3859 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2127, Invalid=11445, Unknown=0, NotChecked=0, Total=13572 [2022-03-15 14:48:55,619 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 743 mSDsluCounter, 3484 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 3564 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:48:55,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 3564 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:48:55,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20256 states. [2022-03-15 14:48:55,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20256 to 9570. [2022-03-15 14:48:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9570 states, 9569 states have (on average 2.8057268262096353) internal successors, (26848), 9569 states have internal predecessors, (26848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:55,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9570 states to 9570 states and 26848 transitions. [2022-03-15 14:48:55,876 INFO L78 Accepts]: Start accepts. Automaton has 9570 states and 26848 transitions. Word has length 78 [2022-03-15 14:48:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:48:55,877 INFO L470 AbstractCegarLoop]: Abstraction has 9570 states and 26848 transitions. [2022-03-15 14:48:55,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 36 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:48:55,877 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states and 26848 transitions. [2022-03-15 14:48:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:48:55,889 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:48:55,889 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:48:55,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2022-03-15 14:48:56,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:56,107 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:48:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:48:56,108 INFO L85 PathProgramCache]: Analyzing trace with hash -453015661, now seen corresponding path program 178 times [2022-03-15 14:48:56,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:48:56,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421867600] [2022-03-15 14:48:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:48:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:48:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:48:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:56,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:48:56,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421867600] [2022-03-15 14:48:56,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421867600] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:48:56,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999923031] [2022-03-15 14:48:56,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:48:56,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:48:56,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:48:56,279 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:48:56,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2022-03-15 14:48:56,427 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:48:56,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:48:56,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 14:48:56,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:48:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:56,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:48:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:48:57,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999923031] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:48:57,446 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:48:57,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-03-15 14:48:57,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907525767] [2022-03-15 14:48:57,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:48:57,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 14:48:57,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:48:57,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 14:48:57,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:48:57,447 INFO L87 Difference]: Start difference. First operand 9570 states and 26848 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:01,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:01,687 INFO L93 Difference]: Finished difference Result 13860 states and 38419 transitions. [2022-03-15 14:49:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-03-15 14:49:01,687 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:01,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:01,711 INFO L225 Difference]: With dead ends: 13860 [2022-03-15 14:49:01,711 INFO L226 Difference]: Without dead ends: 13630 [2022-03-15 14:49:01,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13761 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3787, Invalid=34433, Unknown=0, NotChecked=0, Total=38220 [2022-03-15 14:49:01,715 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 1011 mSDsluCounter, 5688 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 5698 SdHoareTripleChecker+Invalid, 3214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:01,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 5698 Invalid, 3214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:49:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13630 states. [2022-03-15 14:49:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13630 to 9910. [2022-03-15 14:49:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9910 states, 9909 states have (on average 2.807447774750227) internal successors, (27819), 9909 states have internal predecessors, (27819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9910 states to 9910 states and 27819 transitions. [2022-03-15 14:49:01,881 INFO L78 Accepts]: Start accepts. Automaton has 9910 states and 27819 transitions. Word has length 78 [2022-03-15 14:49:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:01,881 INFO L470 AbstractCegarLoop]: Abstraction has 9910 states and 27819 transitions. [2022-03-15 14:49:01,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:01,881 INFO L276 IsEmpty]: Start isEmpty. Operand 9910 states and 27819 transitions. [2022-03-15 14:49:01,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:01,893 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:01,893 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:01,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Ended with exit code 0 [2022-03-15 14:49:02,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2022-03-15 14:49:02,111 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:02,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash -425959533, now seen corresponding path program 179 times [2022-03-15 14:49:02,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:02,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478950485] [2022-03-15 14:49:02,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:02,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:02,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:02,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478950485] [2022-03-15 14:49:02,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478950485] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:02,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735034413] [2022-03-15 14:49:02,263 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:49:02,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:02,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:02,264 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:02,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2022-03-15 14:49:02,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:49:02,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:49:02,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:49:02,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:49:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:02,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:49:03,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:03,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735034413] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:49:03,506 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:49:03,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2022-03-15 14:49:03,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542425513] [2022-03-15 14:49:03,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:49:03,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:49:03,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:03,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:49:03,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:49:03,507 INFO L87 Difference]: Start difference. First operand 9910 states and 27819 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:07,612 INFO L93 Difference]: Finished difference Result 13650 states and 37880 transitions. [2022-03-15 14:49:07,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-03-15 14:49:07,613 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:07,638 INFO L225 Difference]: With dead ends: 13650 [2022-03-15 14:49:07,638 INFO L226 Difference]: Without dead ends: 13486 [2022-03-15 14:49:07,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8753 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3695, Invalid=22387, Unknown=0, NotChecked=0, Total=26082 [2022-03-15 14:49:07,641 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 755 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 4921 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:07,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 4921 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:49:07,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13486 states. [2022-03-15 14:49:07,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13486 to 9974. [2022-03-15 14:49:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9974 states, 9973 states have (on average 2.807079113606738) internal successors, (27995), 9973 states have internal predecessors, (27995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9974 states to 9974 states and 27995 transitions. [2022-03-15 14:49:07,819 INFO L78 Accepts]: Start accepts. Automaton has 9974 states and 27995 transitions. Word has length 78 [2022-03-15 14:49:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:07,819 INFO L470 AbstractCegarLoop]: Abstraction has 9974 states and 27995 transitions. [2022-03-15 14:49:07,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 42 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 9974 states and 27995 transitions. [2022-03-15 14:49:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:07,831 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:07,831 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:07,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Forceful destruction successful, exit code 0 [2022-03-15 14:49:08,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2022-03-15 14:49:08,037 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:08,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1803434457, now seen corresponding path program 180 times [2022-03-15 14:49:08,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:08,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292631760] [2022-03-15 14:49:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:08,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:08,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:08,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292631760] [2022-03-15 14:49:08,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292631760] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:08,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988481702] [2022-03-15 14:49:08,150 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:49:08,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:08,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:08,151 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:08,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2022-03-15 14:49:08,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:49:08,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:49:08,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:49:08,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:49:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:08,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:49:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:09,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988481702] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:49:09,261 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:49:09,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:49:09,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594529382] [2022-03-15 14:49:09,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:49:09,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:49:09,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:49:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:49:09,262 INFO L87 Difference]: Start difference. First operand 9974 states and 27995 transitions. Second operand has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:12,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:12,346 INFO L93 Difference]: Finished difference Result 14610 states and 40664 transitions. [2022-03-15 14:49:12,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-15 14:49:12,346 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:12,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:12,373 INFO L225 Difference]: With dead ends: 14610 [2022-03-15 14:49:12,373 INFO L226 Difference]: Without dead ends: 14495 [2022-03-15 14:49:12,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4579 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2313, Invalid=13187, Unknown=0, NotChecked=0, Total=15500 [2022-03-15 14:49:12,375 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 787 mSDsluCounter, 3685 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:12,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 3745 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:49:12,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14495 states. [2022-03-15 14:49:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14495 to 10198. [2022-03-15 14:49:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10198 states, 10197 states have (on average 2.8136706874570954) internal successors, (28691), 10197 states have internal predecessors, (28691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10198 states to 10198 states and 28691 transitions. [2022-03-15 14:49:12,572 INFO L78 Accepts]: Start accepts. Automaton has 10198 states and 28691 transitions. Word has length 78 [2022-03-15 14:49:12,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:12,573 INFO L470 AbstractCegarLoop]: Abstraction has 10198 states and 28691 transitions. [2022-03-15 14:49:12,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:12,573 INFO L276 IsEmpty]: Start isEmpty. Operand 10198 states and 28691 transitions. [2022-03-15 14:49:12,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:12,586 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:12,586 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:12,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Forceful destruction successful, exit code 0 [2022-03-15 14:49:12,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2022-03-15 14:49:12,799 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:12,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:12,800 INFO L85 PathProgramCache]: Analyzing trace with hash -547194229, now seen corresponding path program 181 times [2022-03-15 14:49:12,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:12,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061822612] [2022-03-15 14:49:12,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:12,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:13,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:13,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061822612] [2022-03-15 14:49:13,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061822612] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:13,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566697760] [2022-03-15 14:49:13,002 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:49:13,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:13,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:13,003 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:13,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2022-03-15 14:49:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:13,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:49:13,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:49:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:13,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:49:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:14,224 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566697760] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:49:14,224 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:49:14,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:49:14,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893852355] [2022-03-15 14:49:14,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:49:14,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:49:14,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:14,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:49:14,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:49:14,225 INFO L87 Difference]: Start difference. First operand 10198 states and 28691 transitions. Second operand has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:16,843 INFO L93 Difference]: Finished difference Result 14982 states and 41643 transitions. [2022-03-15 14:49:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-15 14:49:16,844 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:16,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:16,869 INFO L225 Difference]: With dead ends: 14982 [2022-03-15 14:49:16,869 INFO L226 Difference]: Without dead ends: 14867 [2022-03-15 14:49:16,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6419 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2708, Invalid=17032, Unknown=0, NotChecked=0, Total=19740 [2022-03-15 14:49:16,871 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 699 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 4172 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:16,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 4172 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:49:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14867 states. [2022-03-15 14:49:17,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14867 to 10246. [2022-03-15 14:49:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10246 states, 10245 states have (on average 2.814543679843826) internal successors, (28835), 10245 states have internal predecessors, (28835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10246 states to 10246 states and 28835 transitions. [2022-03-15 14:49:17,051 INFO L78 Accepts]: Start accepts. Automaton has 10246 states and 28835 transitions. Word has length 78 [2022-03-15 14:49:17,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:17,052 INFO L470 AbstractCegarLoop]: Abstraction has 10246 states and 28835 transitions. [2022-03-15 14:49:17,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 10246 states and 28835 transitions. [2022-03-15 14:49:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:17,064 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:17,064 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:17,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Forceful destruction successful, exit code 0 [2022-03-15 14:49:17,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2022-03-15 14:49:17,267 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:17,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:17,268 INFO L85 PathProgramCache]: Analyzing trace with hash 709400439, now seen corresponding path program 182 times [2022-03-15 14:49:17,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:17,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766421748] [2022-03-15 14:49:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:17,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:17,381 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:17,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766421748] [2022-03-15 14:49:17,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766421748] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:17,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286294719] [2022-03-15 14:49:17,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:49:17,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:17,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:17,383 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:17,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2022-03-15 14:49:17,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:49:17,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:49:17,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:49:17,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:49:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:17,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:49:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:18,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286294719] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:49:18,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:49:18,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-15 14:49:18,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390039092] [2022-03-15 14:49:18,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:49:18,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 14:49:18,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:18,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 14:49:18,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1468, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:49:18,278 INFO L87 Difference]: Start difference. First operand 10246 states and 28835 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:24,434 INFO L93 Difference]: Finished difference Result 21688 states and 60175 transitions. [2022-03-15 14:49:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-03-15 14:49:24,435 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:24,472 INFO L225 Difference]: With dead ends: 21688 [2022-03-15 14:49:24,472 INFO L226 Difference]: Without dead ends: 21508 [2022-03-15 14:49:24,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19465 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=7477, Invalid=42923, Unknown=0, NotChecked=0, Total=50400 [2022-03-15 14:49:24,474 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1024 mSDsluCounter, 4304 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:24,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 4391 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:49:24,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21508 states. [2022-03-15 14:49:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21508 to 11138. [2022-03-15 14:49:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11138 states, 11137 states have (on average 2.8219448684564963) internal successors, (31428), 11137 states have internal predecessors, (31428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11138 states to 11138 states and 31428 transitions. [2022-03-15 14:49:24,729 INFO L78 Accepts]: Start accepts. Automaton has 11138 states and 31428 transitions. Word has length 78 [2022-03-15 14:49:24,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:24,729 INFO L470 AbstractCegarLoop]: Abstraction has 11138 states and 31428 transitions. [2022-03-15 14:49:24,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:24,730 INFO L276 IsEmpty]: Start isEmpty. Operand 11138 states and 31428 transitions. [2022-03-15 14:49:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:24,744 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:24,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:24,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Forceful destruction successful, exit code 0 [2022-03-15 14:49:24,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:24,961 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:24,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:24,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1813081975, now seen corresponding path program 183 times [2022-03-15 14:49:24,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:24,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196132656] [2022-03-15 14:49:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:24,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:25,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:25,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:25,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196132656] [2022-03-15 14:49:25,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196132656] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:25,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007984232] [2022-03-15 14:49:25,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:49:25,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:25,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:25,123 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:25,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2022-03-15 14:49:25,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:49:25,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:49:25,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:49:25,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:49:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:25,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:49:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:26,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007984232] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:49:26,061 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:49:26,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-15 14:49:26,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330156921] [2022-03-15 14:49:26,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:49:26,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 14:49:26,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 14:49:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:49:26,062 INFO L87 Difference]: Start difference. First operand 11138 states and 31428 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:32,779 INFO L93 Difference]: Finished difference Result 23070 states and 64218 transitions. [2022-03-15 14:49:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-03-15 14:49:32,780 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:32,822 INFO L225 Difference]: With dead ends: 23070 [2022-03-15 14:49:32,822 INFO L226 Difference]: Without dead ends: 22984 [2022-03-15 14:49:32,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20858 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=8016, Invalid=46040, Unknown=0, NotChecked=0, Total=54056 [2022-03-15 14:49:32,827 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 885 mSDsluCounter, 5059 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 5137 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:32,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 5137 Invalid, 3234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:49:32,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22984 states. [2022-03-15 14:49:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22984 to 11466. [2022-03-15 14:49:33,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11466 states, 11465 states have (on average 2.8240732664631487) internal successors, (32378), 11465 states have internal predecessors, (32378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11466 states to 11466 states and 32378 transitions. [2022-03-15 14:49:33,120 INFO L78 Accepts]: Start accepts. Automaton has 11466 states and 32378 transitions. Word has length 78 [2022-03-15 14:49:33,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:33,120 INFO L470 AbstractCegarLoop]: Abstraction has 11466 states and 32378 transitions. [2022-03-15 14:49:33,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:33,120 INFO L276 IsEmpty]: Start isEmpty. Operand 11466 states and 32378 transitions. [2022-03-15 14:49:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:33,134 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:33,134 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:33,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Forceful destruction successful, exit code 0 [2022-03-15 14:49:33,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:33,343 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:33,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:33,344 INFO L85 PathProgramCache]: Analyzing trace with hash 182463013, now seen corresponding path program 184 times [2022-03-15 14:49:33,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:33,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44368935] [2022-03-15 14:49:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:33,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:33,517 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:33,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44368935] [2022-03-15 14:49:33,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44368935] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:33,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740962429] [2022-03-15 14:49:33,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:49:33,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:33,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:33,518 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:33,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2022-03-15 14:49:33,681 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:49:33,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:49:33,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 14:49:33,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:49:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:33,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:49:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:34,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740962429] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:49:34,345 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:49:34,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2022-03-15 14:49:34,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794962436] [2022-03-15 14:49:34,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:49:34,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 14:49:34,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:34,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 14:49:34,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1487, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:49:34,346 INFO L87 Difference]: Start difference. First operand 11466 states and 32378 transitions. Second operand has 41 states, 41 states have (on average 3.097560975609756) internal successors, (127), 41 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:36,430 INFO L93 Difference]: Finished difference Result 15264 states and 42756 transitions. [2022-03-15 14:49:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-15 14:49:36,430 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.097560975609756) internal successors, (127), 41 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:36,462 INFO L225 Difference]: With dead ends: 15264 [2022-03-15 14:49:36,462 INFO L226 Difference]: Without dead ends: 15105 [2022-03-15 14:49:36,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3521 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1596, Invalid=10176, Unknown=0, NotChecked=0, Total=11772 [2022-03-15 14:49:36,463 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 579 mSDsluCounter, 3504 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:36,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 3551 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:49:36,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15105 states. [2022-03-15 14:49:36,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15105 to 11546. [2022-03-15 14:49:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11546 states, 11545 states have (on average 2.824945864010394) internal successors, (32614), 11545 states have internal predecessors, (32614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11546 states to 11546 states and 32614 transitions. [2022-03-15 14:49:36,661 INFO L78 Accepts]: Start accepts. Automaton has 11546 states and 32614 transitions. Word has length 78 [2022-03-15 14:49:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:36,662 INFO L470 AbstractCegarLoop]: Abstraction has 11546 states and 32614 transitions. [2022-03-15 14:49:36,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.097560975609756) internal successors, (127), 41 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 11546 states and 32614 transitions. [2022-03-15 14:49:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:36,676 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:36,676 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:36,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Forceful destruction successful, exit code 0 [2022-03-15 14:49:36,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2022-03-15 14:49:36,891 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:36,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1103059645, now seen corresponding path program 185 times [2022-03-15 14:49:36,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:36,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416611326] [2022-03-15 14:49:36,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:36,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:37,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:37,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416611326] [2022-03-15 14:49:37,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416611326] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:37,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272313826] [2022-03-15 14:49:37,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:49:37,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:37,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:37,005 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:37,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2022-03-15 14:49:37,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 14:49:37,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:49:37,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:49:37,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:49:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:49:37,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:49:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:49:37,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272313826] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:49:37,651 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:49:37,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:49:37,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950758585] [2022-03-15 14:49:37,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:49:37,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:49:37,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:37,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:49:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:49:37,652 INFO L87 Difference]: Start difference. First operand 11546 states and 32614 transitions. Second operand has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:38,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:38,790 INFO L93 Difference]: Finished difference Result 12660 states and 35519 transitions. [2022-03-15 14:49:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-15 14:49:38,790 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:38,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:38,811 INFO L225 Difference]: With dead ends: 12660 [2022-03-15 14:49:38,812 INFO L226 Difference]: Without dead ends: 12553 [2022-03-15 14:49:38,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1099, Invalid=5873, Unknown=0, NotChecked=0, Total=6972 [2022-03-15 14:49:38,813 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 274 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:38,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 3071 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:49:38,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12553 states. [2022-03-15 14:49:38,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12553 to 10918. [2022-03-15 14:49:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10918 states, 10917 states have (on average 2.8233947055051756) internal successors, (30823), 10917 states have internal predecessors, (30823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10918 states to 10918 states and 30823 transitions. [2022-03-15 14:49:38,979 INFO L78 Accepts]: Start accepts. Automaton has 10918 states and 30823 transitions. Word has length 78 [2022-03-15 14:49:38,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:38,979 INFO L470 AbstractCegarLoop]: Abstraction has 10918 states and 30823 transitions. [2022-03-15 14:49:38,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:38,979 INFO L276 IsEmpty]: Start isEmpty. Operand 10918 states and 30823 transitions. [2022-03-15 14:49:38,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:38,993 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:38,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:39,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Forceful destruction successful, exit code 0 [2022-03-15 14:49:39,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:39,199 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:39,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash 4811181, now seen corresponding path program 186 times [2022-03-15 14:49:39,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:39,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713261933] [2022-03-15 14:49:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:39,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:39,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713261933] [2022-03-15 14:49:39,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713261933] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:39,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121067907] [2022-03-15 14:49:39,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:49:39,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:39,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:39,309 INFO L229 MonitoredProcess]: Starting monitored process 187 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:39,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2022-03-15 14:49:39,426 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 14:49:39,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:49:39,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:49:39,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:49:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:39,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:49:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:40,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121067907] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:49:40,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:49:40,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:49:40,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524330385] [2022-03-15 14:49:40,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:49:40,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:49:40,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:40,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:49:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:49:40,372 INFO L87 Difference]: Start difference. First operand 10918 states and 30823 transitions. Second operand has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:43,557 INFO L93 Difference]: Finished difference Result 16380 states and 45889 transitions. [2022-03-15 14:49:43,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-03-15 14:49:43,557 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:43,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:43,587 INFO L225 Difference]: With dead ends: 16380 [2022-03-15 14:49:43,587 INFO L226 Difference]: Without dead ends: 16185 [2022-03-15 14:49:43,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6490 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3142, Invalid=16880, Unknown=0, NotChecked=0, Total=20022 [2022-03-15 14:49:43,589 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 794 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:43,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 3371 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:49:43,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2022-03-15 14:49:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 11082. [2022-03-15 14:49:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11082 states, 11081 states have (on average 2.8230304124176517) internal successors, (31282), 11081 states have internal predecessors, (31282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11082 states to 11082 states and 31282 transitions. [2022-03-15 14:49:43,799 INFO L78 Accepts]: Start accepts. Automaton has 11082 states and 31282 transitions. Word has length 78 [2022-03-15 14:49:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:43,799 INFO L470 AbstractCegarLoop]: Abstraction has 11082 states and 31282 transitions. [2022-03-15 14:49:43,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 11082 states and 31282 transitions. [2022-03-15 14:49:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:43,814 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:43,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:43,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Forceful destruction successful, exit code 0 [2022-03-15 14:49:44,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,187 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:44,019 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:44,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2025598497, now seen corresponding path program 187 times [2022-03-15 14:49:44,019 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:44,019 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634900873] [2022-03-15 14:49:44,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:44,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:44,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:44,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634900873] [2022-03-15 14:49:44,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634900873] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:44,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600181055] [2022-03-15 14:49:44,153 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:49:44,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:44,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:44,154 INFO L229 MonitoredProcess]: Starting monitored process 188 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:44,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Waiting until timeout for monitored process [2022-03-15 14:49:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:44,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:49:44,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:49:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:44,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:49:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:45,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600181055] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:49:45,271 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:49:45,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:49:45,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724533212] [2022-03-15 14:49:45,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:49:45,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:49:45,271 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:45,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:49:45,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1593, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:49:45,272 INFO L87 Difference]: Start difference. First operand 11082 states and 31282 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:49,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:49,102 INFO L93 Difference]: Finished difference Result 18800 states and 52606 transitions. [2022-03-15 14:49:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-03-15 14:49:49,102 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:49,132 INFO L225 Difference]: With dead ends: 18800 [2022-03-15 14:49:49,133 INFO L226 Difference]: Without dead ends: 18730 [2022-03-15 14:49:49,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7950 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4199, Invalid=19363, Unknown=0, NotChecked=0, Total=23562 [2022-03-15 14:49:49,135 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 999 mSDsluCounter, 3498 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:49,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [999 Valid, 3574 Invalid, 2063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:49:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18730 states. [2022-03-15 14:49:49,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18730 to 11110. [2022-03-15 14:49:49,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11110 states, 11109 states have (on average 2.8235664776307496) internal successors, (31367), 11109 states have internal predecessors, (31367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11110 states to 11110 states and 31367 transitions. [2022-03-15 14:49:49,359 INFO L78 Accepts]: Start accepts. Automaton has 11110 states and 31367 transitions. Word has length 78 [2022-03-15 14:49:49,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:49,359 INFO L470 AbstractCegarLoop]: Abstraction has 11110 states and 31367 transitions. [2022-03-15 14:49:49,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:49,359 INFO L276 IsEmpty]: Start isEmpty. Operand 11110 states and 31367 transitions. [2022-03-15 14:49:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:49,374 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:49,374 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:49,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Ended with exit code 0 [2022-03-15 14:49:49,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable219 [2022-03-15 14:49:49,591 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:49,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:49,592 INFO L85 PathProgramCache]: Analyzing trace with hash 982759853, now seen corresponding path program 188 times [2022-03-15 14:49:49,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:49,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253226974] [2022-03-15 14:49:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:49,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:49,745 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:49,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253226974] [2022-03-15 14:49:49,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253226974] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:49,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655568428] [2022-03-15 14:49:49,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:49:49,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:49,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:49,747 INFO L229 MonitoredProcess]: Starting monitored process 189 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:49,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Waiting until timeout for monitored process [2022-03-15 14:49:49,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:49:49,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:49:49,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:49:49,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:49:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:50,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:49:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:50,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655568428] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:49:50,656 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:49:50,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:49:50,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151297305] [2022-03-15 14:49:50,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:49:50,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:49:50,656 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:50,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:49:50,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1602, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:49:50,657 INFO L87 Difference]: Start difference. First operand 11110 states and 31367 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:54,722 INFO L93 Difference]: Finished difference Result 19035 states and 53196 transitions. [2022-03-15 14:49:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-03-15 14:49:54,722 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:54,759 INFO L225 Difference]: With dead ends: 19035 [2022-03-15 14:49:54,759 INFO L226 Difference]: Without dead ends: 18909 [2022-03-15 14:49:54,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8895 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4498, Invalid=21262, Unknown=0, NotChecked=0, Total=25760 [2022-03-15 14:49:54,763 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1117 mSDsluCounter, 3930 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 3979 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:54,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 3979 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:49:54,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18909 states. [2022-03-15 14:49:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18909 to 11074. [2022-03-15 14:49:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11074 states, 11073 states have (on average 2.8238056533911315) internal successors, (31268), 11073 states have internal predecessors, (31268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11074 states to 11074 states and 31268 transitions. [2022-03-15 14:49:54,999 INFO L78 Accepts]: Start accepts. Automaton has 11074 states and 31268 transitions. Word has length 78 [2022-03-15 14:49:54,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:54,999 INFO L470 AbstractCegarLoop]: Abstraction has 11074 states and 31268 transitions. [2022-03-15 14:49:55,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:55,000 INFO L276 IsEmpty]: Start isEmpty. Operand 11074 states and 31268 transitions. [2022-03-15 14:49:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:55,014 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:55,014 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:55,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Ended with exit code 0 [2022-03-15 14:49:55,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,189 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:55,231 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:55,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:55,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1867223917, now seen corresponding path program 189 times [2022-03-15 14:49:55,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:55,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429135786] [2022-03-15 14:49:55,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:55,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:55,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:55,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429135786] [2022-03-15 14:49:55,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429135786] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:55,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521731620] [2022-03-15 14:49:55,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:49:55,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:55,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:55,387 INFO L229 MonitoredProcess]: Starting monitored process 190 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:55,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2022-03-15 14:49:55,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:49:55,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:49:55,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:49:55,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:49:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:49:55,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:49:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:49:56,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521731620] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:49:56,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:49:56,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:49:56,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205905622] [2022-03-15 14:49:56,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:49:56,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:49:56,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:49:56,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:49:56,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:49:56,368 INFO L87 Difference]: Start difference. First operand 11074 states and 31268 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:49:59,348 INFO L93 Difference]: Finished difference Result 13972 states and 39074 transitions. [2022-03-15 14:49:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-03-15 14:49:59,349 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:49:59,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:49:59,373 INFO L225 Difference]: With dead ends: 13972 [2022-03-15 14:49:59,373 INFO L226 Difference]: Without dead ends: 13876 [2022-03-15 14:49:59,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4303 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2329, Invalid=11713, Unknown=0, NotChecked=0, Total=14042 [2022-03-15 14:49:59,375 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 544 mSDsluCounter, 3194 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:49:59,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 3237 Invalid, 1737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:49:59,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13876 states. [2022-03-15 14:49:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13876 to 11114. [2022-03-15 14:49:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11114 states, 11113 states have (on average 2.824979753441915) internal successors, (31394), 11113 states have internal predecessors, (31394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11114 states to 11114 states and 31394 transitions. [2022-03-15 14:49:59,562 INFO L78 Accepts]: Start accepts. Automaton has 11114 states and 31394 transitions. Word has length 78 [2022-03-15 14:49:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:49:59,562 INFO L470 AbstractCegarLoop]: Abstraction has 11114 states and 31394 transitions. [2022-03-15 14:49:59,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:49:59,563 INFO L276 IsEmpty]: Start isEmpty. Operand 11114 states and 31394 transitions. [2022-03-15 14:49:59,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:49:59,576 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:49:59,576 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:49:59,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Forceful destruction successful, exit code 0 [2022-03-15 14:49:59,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2022-03-15 14:49:59,782 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:49:59,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:49:59,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1941246643, now seen corresponding path program 190 times [2022-03-15 14:49:59,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:49:59,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533721174] [2022-03-15 14:49:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:49:59,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:49:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:49:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:49:59,949 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:49:59,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533721174] [2022-03-15 14:49:59,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533721174] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:49:59,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265557350] [2022-03-15 14:49:59,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:49:59,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:49:59,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:49:59,951 INFO L229 MonitoredProcess]: Starting monitored process 191 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:49:59,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Waiting until timeout for monitored process [2022-03-15 14:50:00,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:50:00,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:50:00,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 14:50:00,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:50:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:00,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:50:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:00,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265557350] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:50:00,736 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:50:00,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-03-15 14:50:00,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413316614] [2022-03-15 14:50:00,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:50:00,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 14:50:00,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:00,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 14:50:00,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1799, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:50:00,737 INFO L87 Difference]: Start difference. First operand 11114 states and 31394 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:05,916 INFO L93 Difference]: Finished difference Result 18401 states and 51269 transitions. [2022-03-15 14:50:05,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2022-03-15 14:50:05,916 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:50:05,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:05,953 INFO L225 Difference]: With dead ends: 18401 [2022-03-15 14:50:05,954 INFO L226 Difference]: Without dead ends: 18162 [2022-03-15 14:50:05,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16569 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5082, Invalid=40074, Unknown=0, NotChecked=0, Total=45156 [2022-03-15 14:50:05,959 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 1053 mSDsluCounter, 5138 mSDsCounter, 0 mSdLazyCounter, 3205 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 5222 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 3205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:05,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 5222 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 3205 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:50:05,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18162 states. [2022-03-15 14:50:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18162 to 11406. [2022-03-15 14:50:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11406 states, 11405 states have (on average 2.823761508110478) internal successors, (32205), 11405 states have internal predecessors, (32205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11406 states to 11406 states and 32205 transitions. [2022-03-15 14:50:06,374 INFO L78 Accepts]: Start accepts. Automaton has 11406 states and 32205 transitions. Word has length 78 [2022-03-15 14:50:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:06,374 INFO L470 AbstractCegarLoop]: Abstraction has 11406 states and 32205 transitions. [2022-03-15 14:50:06,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 11406 states and 32205 transitions. [2022-03-15 14:50:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:50:06,389 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:06,389 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:06,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Forceful destruction successful, exit code 0 [2022-03-15 14:50:06,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 191 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2022-03-15 14:50:06,605 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:06,606 INFO L85 PathProgramCache]: Analyzing trace with hash -354871947, now seen corresponding path program 191 times [2022-03-15 14:50:06,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:06,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056123946] [2022-03-15 14:50:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:06,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:06,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:06,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056123946] [2022-03-15 14:50:06,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056123946] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:50:06,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714591490] [2022-03-15 14:50:06,782 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:50:06,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:06,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:50:06,784 INFO L229 MonitoredProcess]: Starting monitored process 192 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:50:06,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Waiting until timeout for monitored process [2022-03-15 14:50:06,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:50:06,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:50:06,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:50:06,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:50:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:07,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:50:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:07,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714591490] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:50:07,875 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:50:07,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:50:07,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974297411] [2022-03-15 14:50:07,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:50:07,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:50:07,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:07,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:50:07,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:50:07,876 INFO L87 Difference]: Start difference. First operand 11406 states and 32205 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:11,636 INFO L93 Difference]: Finished difference Result 15843 states and 44096 transitions. [2022-03-15 14:50:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-03-15 14:50:11,636 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:50:11,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:11,667 INFO L225 Difference]: With dead ends: 15843 [2022-03-15 14:50:11,667 INFO L226 Difference]: Without dead ends: 15651 [2022-03-15 14:50:11,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6783 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2906, Invalid=17974, Unknown=0, NotChecked=0, Total=20880 [2022-03-15 14:50:11,670 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 750 mSDsluCounter, 3733 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 3797 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:11,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 3797 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:50:11,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15651 states. [2022-03-15 14:50:11,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15651 to 11422. [2022-03-15 14:50:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11422 states, 11421 states have (on average 2.8236581735399704) internal successors, (32249), 11421 states have internal predecessors, (32249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11422 states to 11422 states and 32249 transitions. [2022-03-15 14:50:11,926 INFO L78 Accepts]: Start accepts. Automaton has 11422 states and 32249 transitions. Word has length 78 [2022-03-15 14:50:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:11,927 INFO L470 AbstractCegarLoop]: Abstraction has 11422 states and 32249 transitions. [2022-03-15 14:50:11,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:11,927 INFO L276 IsEmpty]: Start isEmpty. Operand 11422 states and 32249 transitions. [2022-03-15 14:50:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:50:11,946 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:11,946 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:11,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Forceful destruction successful, exit code 0 [2022-03-15 14:50:12,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223,192 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:12,160 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:12,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash 131624789, now seen corresponding path program 192 times [2022-03-15 14:50:12,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:12,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709289555] [2022-03-15 14:50:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:12,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:12,341 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:12,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709289555] [2022-03-15 14:50:12,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709289555] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:50:12,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870085450] [2022-03-15 14:50:12,342 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:50:12,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:12,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:50:12,343 INFO L229 MonitoredProcess]: Starting monitored process 193 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:50:12,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2022-03-15 14:50:12,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:50:12,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:50:12,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:50:12,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:50:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:12,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:50:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:13,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870085450] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:50:13,267 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:50:13,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:50:13,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078204133] [2022-03-15 14:50:13,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:50:13,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:50:13,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:13,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:50:13,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:50:13,268 INFO L87 Difference]: Start difference. First operand 11422 states and 32249 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:15,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:15,773 INFO L93 Difference]: Finished difference Result 18670 states and 52031 transitions. [2022-03-15 14:50:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-15 14:50:15,773 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:50:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:15,807 INFO L225 Difference]: With dead ends: 18670 [2022-03-15 14:50:15,807 INFO L226 Difference]: Without dead ends: 18574 [2022-03-15 14:50:15,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5293 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2669, Invalid=14101, Unknown=0, NotChecked=0, Total=16770 [2022-03-15 14:50:15,810 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 798 mSDsluCounter, 3907 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 3957 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:15,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 3957 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:50:15,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18574 states. [2022-03-15 14:50:16,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18574 to 11598. [2022-03-15 14:50:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11598 states, 11597 states have (on average 2.831508148659136) internal successors, (32837), 11597 states have internal predecessors, (32837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11598 states to 11598 states and 32837 transitions. [2022-03-15 14:50:16,071 INFO L78 Accepts]: Start accepts. Automaton has 11598 states and 32837 transitions. Word has length 78 [2022-03-15 14:50:16,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:16,071 INFO L470 AbstractCegarLoop]: Abstraction has 11598 states and 32837 transitions. [2022-03-15 14:50:16,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 11598 states and 32837 transitions. [2022-03-15 14:50:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:50:16,086 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:16,086 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:16,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Ended with exit code 0 [2022-03-15 14:50:16,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2022-03-15 14:50:16,299 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:16,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:16,300 INFO L85 PathProgramCache]: Analyzing trace with hash -726378461, now seen corresponding path program 193 times [2022-03-15 14:50:16,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:16,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069241632] [2022-03-15 14:50:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:16,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:16,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:16,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069241632] [2022-03-15 14:50:16,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069241632] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:50:16,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361837547] [2022-03-15 14:50:16,451 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:50:16,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:16,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:50:16,452 INFO L229 MonitoredProcess]: Starting monitored process 194 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:50:16,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Waiting until timeout for monitored process [2022-03-15 14:50:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:16,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:50:16,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:50:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:16,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:50:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:17,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361837547] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:50:17,544 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:50:17,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:50:17,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433768316] [2022-03-15 14:50:17,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:50:17,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:50:17,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:17,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:50:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1622, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:50:17,545 INFO L87 Difference]: Start difference. First operand 11598 states and 32837 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:19,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:19,816 INFO L93 Difference]: Finished difference Result 16958 states and 47337 transitions. [2022-03-15 14:50:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-15 14:50:19,816 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:50:19,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:19,849 INFO L225 Difference]: With dead ends: 16958 [2022-03-15 14:50:19,849 INFO L226 Difference]: Without dead ends: 16840 [2022-03-15 14:50:19,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4366 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2295, Invalid=12711, Unknown=0, NotChecked=0, Total=15006 [2022-03-15 14:50:19,851 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 726 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:19,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 3453 Invalid, 1933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:50:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16840 states. [2022-03-15 14:50:20,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16840 to 11618. [2022-03-15 14:50:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11618 states, 11617 states have (on average 2.8193165188947233) internal successors, (32752), 11617 states have internal predecessors, (32752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:20,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11618 states to 11618 states and 32752 transitions. [2022-03-15 14:50:20,187 INFO L78 Accepts]: Start accepts. Automaton has 11618 states and 32752 transitions. Word has length 78 [2022-03-15 14:50:20,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:20,187 INFO L470 AbstractCegarLoop]: Abstraction has 11618 states and 32752 transitions. [2022-03-15 14:50:20,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 11618 states and 32752 transitions. [2022-03-15 14:50:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:50:20,203 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:20,203 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:20,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Forceful destruction successful, exit code 0 [2022-03-15 14:50:20,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2022-03-15 14:50:20,404 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:20,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash -239881725, now seen corresponding path program 194 times [2022-03-15 14:50:20,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:20,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075270758] [2022-03-15 14:50:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:20,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:20,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:20,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075270758] [2022-03-15 14:50:20,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075270758] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:50:20,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152329661] [2022-03-15 14:50:20,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:50:20,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:20,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:50:20,539 INFO L229 MonitoredProcess]: Starting monitored process 195 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:50:20,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Waiting until timeout for monitored process [2022-03-15 14:50:20,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:50:20,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:50:20,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:50:20,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:50:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:20,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:50:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:21,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152329661] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:50:21,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:50:21,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:50:21,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069756072] [2022-03-15 14:50:21,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:50:21,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:50:21,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:50:21,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:50:21,452 INFO L87 Difference]: Start difference. First operand 11618 states and 32752 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:23,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:23,843 INFO L93 Difference]: Finished difference Result 18649 states and 51920 transitions. [2022-03-15 14:50:23,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-15 14:50:23,843 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:50:23,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:23,882 INFO L225 Difference]: With dead ends: 18649 [2022-03-15 14:50:23,882 INFO L226 Difference]: Without dead ends: 18555 [2022-03-15 14:50:23,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4589 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2452, Invalid=12554, Unknown=0, NotChecked=0, Total=15006 [2022-03-15 14:50:23,884 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 562 mSDsluCounter, 3962 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 4017 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:23,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 4017 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:50:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18555 states. [2022-03-15 14:50:24,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18555 to 11502. [2022-03-15 14:50:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11502 states, 11501 states have (on average 2.814798713155378) internal successors, (32373), 11501 states have internal predecessors, (32373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:24,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11502 states to 11502 states and 32373 transitions. [2022-03-15 14:50:24,174 INFO L78 Accepts]: Start accepts. Automaton has 11502 states and 32373 transitions. Word has length 78 [2022-03-15 14:50:24,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:24,174 INFO L470 AbstractCegarLoop]: Abstraction has 11502 states and 32373 transitions. [2022-03-15 14:50:24,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:24,174 INFO L276 IsEmpty]: Start isEmpty. Operand 11502 states and 32373 transitions. [2022-03-15 14:50:24,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:50:24,189 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:24,189 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:24,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Forceful destruction successful, exit code 0 [2022-03-15 14:50:24,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2022-03-15 14:50:24,403 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash -252325455, now seen corresponding path program 195 times [2022-03-15 14:50:24,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:24,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320358380] [2022-03-15 14:50:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:24,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:24,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320358380] [2022-03-15 14:50:24,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320358380] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:50:24,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890641518] [2022-03-15 14:50:24,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:50:24,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:24,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:50:24,580 INFO L229 MonitoredProcess]: Starting monitored process 196 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:50:24,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2022-03-15 14:50:24,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:50:24,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:50:24,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:50:24,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:50:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:25,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:50:25,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:25,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890641518] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:50:25,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:50:25,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:50:25,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042071402] [2022-03-15 14:50:25,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:50:25,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:50:25,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:25,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:50:25,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1613, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:50:25,642 INFO L87 Difference]: Start difference. First operand 11502 states and 32373 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:28,588 INFO L93 Difference]: Finished difference Result 18744 states and 52188 transitions. [2022-03-15 14:50:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-15 14:50:28,589 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:50:28,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:28,628 INFO L225 Difference]: With dead ends: 18744 [2022-03-15 14:50:28,628 INFO L226 Difference]: Without dead ends: 18666 [2022-03-15 14:50:28,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4275 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2228, Invalid=12292, Unknown=0, NotChecked=0, Total=14520 [2022-03-15 14:50:28,631 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 777 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:28,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 3275 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:50:28,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18666 states. [2022-03-15 14:50:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18666 to 12502. [2022-03-15 14:50:28,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12502 states, 12501 states have (on average 2.818894488440925) internal successors, (35239), 12501 states have internal predecessors, (35239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12502 states to 12502 states and 35239 transitions. [2022-03-15 14:50:29,024 INFO L78 Accepts]: Start accepts. Automaton has 12502 states and 35239 transitions. Word has length 78 [2022-03-15 14:50:29,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:29,024 INFO L470 AbstractCegarLoop]: Abstraction has 12502 states and 35239 transitions. [2022-03-15 14:50:29,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 12502 states and 35239 transitions. [2022-03-15 14:50:29,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:50:29,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:29,043 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:29,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Forceful destruction successful, exit code 0 [2022-03-15 14:50:29,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2022-03-15 14:50:29,260 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:29,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1137607975, now seen corresponding path program 196 times [2022-03-15 14:50:29,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:29,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418558526] [2022-03-15 14:50:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:29,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:29,420 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:29,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418558526] [2022-03-15 14:50:29,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418558526] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:50:29,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346742109] [2022-03-15 14:50:29,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:50:29,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:29,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:50:29,422 INFO L229 MonitoredProcess]: Starting monitored process 197 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:50:29,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Waiting until timeout for monitored process [2022-03-15 14:50:29,597 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:50:29,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:50:29,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 14:50:29,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:50:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:29,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:50:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:30,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346742109] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:50:30,414 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:50:30,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 39 [2022-03-15 14:50:30,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34319749] [2022-03-15 14:50:30,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:50:30,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-15 14:50:30,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:30,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-15 14:50:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 14:50:30,415 INFO L87 Difference]: Start difference. First operand 12502 states and 35239 transitions. Second operand has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 39 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:35,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:35,098 INFO L93 Difference]: Finished difference Result 24102 states and 67036 transitions. [2022-03-15 14:50:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-03-15 14:50:35,098 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 39 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:50:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:35,144 INFO L225 Difference]: With dead ends: 24102 [2022-03-15 14:50:35,144 INFO L226 Difference]: Without dead ends: 23942 [2022-03-15 14:50:35,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 134 SyntacticMatches, 4 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12282 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5313, Invalid=27993, Unknown=0, NotChecked=0, Total=33306 [2022-03-15 14:50:35,146 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 890 mSDsluCounter, 5133 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 5145 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:35,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 5145 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:50:35,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23942 states. [2022-03-15 14:50:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23942 to 15262. [2022-03-15 14:50:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15262 states, 15261 states have (on average 2.8250442303911933) internal successors, (43113), 15261 states have internal predecessors, (43113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15262 states to 15262 states and 43113 transitions. [2022-03-15 14:50:35,518 INFO L78 Accepts]: Start accepts. Automaton has 15262 states and 43113 transitions. Word has length 78 [2022-03-15 14:50:35,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:35,518 INFO L470 AbstractCegarLoop]: Abstraction has 15262 states and 43113 transitions. [2022-03-15 14:50:35,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.076923076923077) internal successors, (120), 39 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:35,519 INFO L276 IsEmpty]: Start isEmpty. Operand 15262 states and 43113 transitions. [2022-03-15 14:50:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:50:35,540 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:35,540 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:35,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Forceful destruction successful, exit code 0 [2022-03-15 14:50:35,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,197 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:35,757 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:35,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1304954027, now seen corresponding path program 197 times [2022-03-15 14:50:35,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:35,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663600776] [2022-03-15 14:50:35,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:35,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:35,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:35,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663600776] [2022-03-15 14:50:35,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663600776] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:50:35,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263103202] [2022-03-15 14:50:35,899 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:50:35,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:35,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:50:35,900 INFO L229 MonitoredProcess]: Starting monitored process 198 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:50:35,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Waiting until timeout for monitored process [2022-03-15 14:50:36,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:50:36,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:50:36,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:50:36,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:50:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:36,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:50:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:36,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263103202] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:50:36,950 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:50:36,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-03-15 14:50:36,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254857127] [2022-03-15 14:50:36,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:50:36,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 14:50:36,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:36,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 14:50:36,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:50:36,951 INFO L87 Difference]: Start difference. First operand 15262 states and 43113 transitions. Second operand has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:47,221 INFO L93 Difference]: Finished difference Result 25594 states and 71095 transitions. [2022-03-15 14:50:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 269 states. [2022-03-15 14:50:47,221 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:50:47,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:47,273 INFO L225 Difference]: With dead ends: 25594 [2022-03-15 14:50:47,273 INFO L226 Difference]: Without dead ends: 25273 [2022-03-15 14:50:47,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37059 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=12594, Invalid=78308, Unknown=0, NotChecked=0, Total=90902 [2022-03-15 14:50:47,280 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1187 mSDsluCounter, 6179 mSDsCounter, 0 mSdLazyCounter, 3595 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 6214 SdHoareTripleChecker+Invalid, 3878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 3595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:47,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 6214 Invalid, 3878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 3595 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:50:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25273 states. [2022-03-15 14:50:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25273 to 15922. [2022-03-15 14:50:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15922 states, 15921 states have (on average 2.8249481816468816) internal successors, (44976), 15921 states have internal predecessors, (44976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15922 states to 15922 states and 44976 transitions. [2022-03-15 14:50:47,655 INFO L78 Accepts]: Start accepts. Automaton has 15922 states and 44976 transitions. Word has length 78 [2022-03-15 14:50:47,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:47,655 INFO L470 AbstractCegarLoop]: Abstraction has 15922 states and 44976 transitions. [2022-03-15 14:50:47,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.926829268292683) internal successors, (120), 41 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:47,655 INFO L276 IsEmpty]: Start isEmpty. Operand 15922 states and 44976 transitions. [2022-03-15 14:50:47,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:50:47,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:47,780 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:47,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Forceful destruction successful, exit code 0 [2022-03-15 14:50:47,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,198 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:47,995 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash 550787949, now seen corresponding path program 198 times [2022-03-15 14:50:47,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:47,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625526508] [2022-03-15 14:50:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:47,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:48,133 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:48,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625526508] [2022-03-15 14:50:48,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625526508] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:50:48,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503642925] [2022-03-15 14:50:48,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:50:48,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:48,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:50:48,134 INFO L229 MonitoredProcess]: Starting monitored process 199 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:50:48,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Waiting until timeout for monitored process [2022-03-15 14:50:48,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 14:50:48,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:50:48,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:50:48,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:50:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:50:48,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:50:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:50:48,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503642925] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:50:48,958 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:50:48,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:50:48,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78321310] [2022-03-15 14:50:48,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:50:48,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:50:48,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:48,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:50:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:50:48,959 INFO L87 Difference]: Start difference. First operand 15922 states and 44976 transitions. Second operand has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:51,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:51,712 INFO L93 Difference]: Finished difference Result 17853 states and 50105 transitions. [2022-03-15 14:50:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-03-15 14:50:51,712 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:50:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:51,745 INFO L225 Difference]: With dead ends: 17853 [2022-03-15 14:50:51,745 INFO L226 Difference]: Without dead ends: 17738 [2022-03-15 14:50:51,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4995 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2402, Invalid=14110, Unknown=0, NotChecked=0, Total=16512 [2022-03-15 14:50:51,748 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 468 mSDsluCounter, 4417 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 4534 SdHoareTripleChecker+Invalid, 2453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:51,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 4534 Invalid, 2453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:50:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17738 states. [2022-03-15 14:50:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17738 to 15446. [2022-03-15 14:50:51,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15446 states, 15445 states have (on average 2.8264810618323084) internal successors, (43655), 15445 states have internal predecessors, (43655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:52,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15446 states to 15446 states and 43655 transitions. [2022-03-15 14:50:52,010 INFO L78 Accepts]: Start accepts. Automaton has 15446 states and 43655 transitions. Word has length 78 [2022-03-15 14:50:52,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:50:52,010 INFO L470 AbstractCegarLoop]: Abstraction has 15446 states and 43655 transitions. [2022-03-15 14:50:52,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2162162162162162) internal successors, (119), 37 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:52,010 INFO L276 IsEmpty]: Start isEmpty. Operand 15446 states and 43655 transitions. [2022-03-15 14:50:52,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:50:52,029 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:50:52,030 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:50:52,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Forceful destruction successful, exit code 0 [2022-03-15 14:50:52,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,199 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:52,238 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:50:52,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:50:52,238 INFO L85 PathProgramCache]: Analyzing trace with hash -511846811, now seen corresponding path program 199 times [2022-03-15 14:50:52,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:50:52,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972710424] [2022-03-15 14:50:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:50:52,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:50:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:52,376 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:52,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:50:52,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972710424] [2022-03-15 14:50:52,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972710424] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:50:52,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184927073] [2022-03-15 14:50:52,376 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:50:52,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:50:52,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:50:52,377 INFO L229 MonitoredProcess]: Starting monitored process 200 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:50:52,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Waiting until timeout for monitored process [2022-03-15 14:50:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:50:52,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:50:52,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:50:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:52,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:50:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:50:53,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184927073] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:50:53,277 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:50:53,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:50:53,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421889740] [2022-03-15 14:50:53,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:50:53,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:50:53,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:50:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:50:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:50:53,278 INFO L87 Difference]: Start difference. First operand 15446 states and 43655 transitions. Second operand has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:50:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:50:59,930 INFO L93 Difference]: Finished difference Result 23252 states and 64753 transitions. [2022-03-15 14:50:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2022-03-15 14:50:59,930 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:50:59,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:50:59,973 INFO L225 Difference]: With dead ends: 23252 [2022-03-15 14:50:59,974 INFO L226 Difference]: Without dead ends: 22973 [2022-03-15 14:50:59,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25619 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=9102, Invalid=55160, Unknown=0, NotChecked=0, Total=64262 [2022-03-15 14:50:59,978 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1023 mSDsluCounter, 4969 mSDsCounter, 0 mSdLazyCounter, 2742 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 5025 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:50:59,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 5025 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2742 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:50:59,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22973 states. [2022-03-15 14:51:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22973 to 15622. [2022-03-15 14:51:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15622 states, 15621 states have (on average 2.8284360796363868) internal successors, (44183), 15621 states have internal predecessors, (44183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15622 states to 15622 states and 44183 transitions. [2022-03-15 14:51:00,288 INFO L78 Accepts]: Start accepts. Automaton has 15622 states and 44183 transitions. Word has length 78 [2022-03-15 14:51:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:00,288 INFO L470 AbstractCegarLoop]: Abstraction has 15622 states and 44183 transitions. [2022-03-15 14:51:00,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 15622 states and 44183 transitions. [2022-03-15 14:51:00,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:51:00,309 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:00,309 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:00,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Forceful destruction successful, exit code 0 [2022-03-15 14:51:00,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,200 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:00,523 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:00,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash 610670549, now seen corresponding path program 200 times [2022-03-15 14:51:00,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:00,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955619412] [2022-03-15 14:51:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:00,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:00,623 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:00,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955619412] [2022-03-15 14:51:00,623 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955619412] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:51:00,623 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241470540] [2022-03-15 14:51:00,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:51:00,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:00,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:51:00,624 INFO L229 MonitoredProcess]: Starting monitored process 201 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:51:00,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Waiting until timeout for monitored process [2022-03-15 14:51:00,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:51:00,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:51:00,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:51:00,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:51:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:01,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:51:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:01,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241470540] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:51:01,689 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:51:01,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:51:01,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087676974] [2022-03-15 14:51:01,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:51:01,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:51:01,689 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:01,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:51:01,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:51:01,690 INFO L87 Difference]: Start difference. First operand 15622 states and 44183 transitions. Second operand has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:05,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:05,158 INFO L93 Difference]: Finished difference Result 18184 states and 51086 transitions. [2022-03-15 14:51:05,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-03-15 14:51:05,159 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:51:05,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:05,191 INFO L225 Difference]: With dead ends: 18184 [2022-03-15 14:51:05,191 INFO L226 Difference]: Without dead ends: 17953 [2022-03-15 14:51:05,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6579 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2907, Invalid=17115, Unknown=0, NotChecked=0, Total=20022 [2022-03-15 14:51:05,193 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 664 mSDsluCounter, 4279 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:05,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 4348 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:51:05,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17953 states. [2022-03-15 14:51:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17953 to 15694. [2022-03-15 14:51:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15694 states, 15693 states have (on average 2.828076212323966) internal successors, (44381), 15693 states have internal predecessors, (44381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15694 states to 15694 states and 44381 transitions. [2022-03-15 14:51:05,455 INFO L78 Accepts]: Start accepts. Automaton has 15694 states and 44381 transitions. Word has length 78 [2022-03-15 14:51:05,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:05,455 INFO L470 AbstractCegarLoop]: Abstraction has 15694 states and 44381 transitions. [2022-03-15 14:51:05,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.953488372093023) internal successors, (127), 43 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 15694 states and 44381 transitions. [2022-03-15 14:51:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:51:05,476 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:05,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:05,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Forceful destruction successful, exit code 0 [2022-03-15 14:51:05,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2022-03-15 14:51:05,691 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:05,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:05,692 INFO L85 PathProgramCache]: Analyzing trace with hash 433018717, now seen corresponding path program 201 times [2022-03-15 14:51:05,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:05,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639525698] [2022-03-15 14:51:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:05,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:05,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:05,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639525698] [2022-03-15 14:51:05,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639525698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:51:05,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53276632] [2022-03-15 14:51:05,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:51:05,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:05,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:51:05,852 INFO L229 MonitoredProcess]: Starting monitored process 202 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:51:05,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Waiting until timeout for monitored process [2022-03-15 14:51:06,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:51:06,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:51:06,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:51:06,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:51:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:51:06,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:51:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:51:06,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53276632] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:51:06,568 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:51:06,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:51:06,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374408000] [2022-03-15 14:51:06,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:51:06,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:51:06,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:06,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:51:06,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1186, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:51:06,569 INFO L87 Difference]: Start difference. First operand 15694 states and 44381 transitions. Second operand has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:09,739 INFO L93 Difference]: Finished difference Result 21088 states and 59368 transitions. [2022-03-15 14:51:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-03-15 14:51:09,739 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:51:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:09,782 INFO L225 Difference]: With dead ends: 21088 [2022-03-15 14:51:09,782 INFO L226 Difference]: Without dead ends: 20985 [2022-03-15 14:51:09,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8561 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4061, Invalid=21379, Unknown=0, NotChecked=0, Total=25440 [2022-03-15 14:51:09,786 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 467 mSDsluCounter, 3734 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 3861 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:09,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 3861 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:51:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20985 states. [2022-03-15 14:51:10,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20985 to 15666. [2022-03-15 14:51:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15666 states, 15665 states have (on average 2.823619533992978) internal successors, (44232), 15665 states have internal predecessors, (44232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:10,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15666 states to 15666 states and 44232 transitions. [2022-03-15 14:51:10,170 INFO L78 Accepts]: Start accepts. Automaton has 15666 states and 44232 transitions. Word has length 78 [2022-03-15 14:51:10,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:10,171 INFO L470 AbstractCegarLoop]: Abstraction has 15666 states and 44232 transitions. [2022-03-15 14:51:10,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:10,171 INFO L276 IsEmpty]: Start isEmpty. Operand 15666 states and 44232 transitions. [2022-03-15 14:51:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:51:10,195 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:10,195 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:10,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Ended with exit code 0 [2022-03-15 14:51:10,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2022-03-15 14:51:10,416 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:10,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:10,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1597390961, now seen corresponding path program 202 times [2022-03-15 14:51:10,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:10,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068968035] [2022-03-15 14:51:10,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:10,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:10,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:10,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068968035] [2022-03-15 14:51:10,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068968035] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:51:10,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809801246] [2022-03-15 14:51:10,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:51:10,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:10,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:51:10,541 INFO L229 MonitoredProcess]: Starting monitored process 203 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:51:10,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Waiting until timeout for monitored process [2022-03-15 14:51:10,735 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:51:10,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:51:10,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 14:51:10,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:51:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:10,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:51:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:11,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809801246] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:51:11,316 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:51:11,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2022-03-15 14:51:11,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76347016] [2022-03-15 14:51:11,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:51:11,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 14:51:11,318 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:11,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 14:51:11,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1462, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:51:11,319 INFO L87 Difference]: Start difference. First operand 15666 states and 44232 transitions. Second operand has 41 states, 41 states have (on average 3.0) internal successors, (123), 41 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:15,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:15,194 INFO L93 Difference]: Finished difference Result 21403 states and 59813 transitions. [2022-03-15 14:51:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-03-15 14:51:15,195 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.0) internal successors, (123), 41 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:51:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:15,230 INFO L225 Difference]: With dead ends: 21403 [2022-03-15 14:51:15,230 INFO L226 Difference]: Without dead ends: 21333 [2022-03-15 14:51:15,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8857 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4479, Invalid=21603, Unknown=0, NotChecked=0, Total=26082 [2022-03-15 14:51:15,231 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 750 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:15,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 4257 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:51:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21333 states. [2022-03-15 14:51:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21333 to 15690. [2022-03-15 14:51:15,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15690 states, 15689 states have (on average 2.8237618713748485) internal successors, (44302), 15689 states have internal predecessors, (44302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15690 states to 15690 states and 44302 transitions. [2022-03-15 14:51:15,509 INFO L78 Accepts]: Start accepts. Automaton has 15690 states and 44302 transitions. Word has length 78 [2022-03-15 14:51:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:15,509 INFO L470 AbstractCegarLoop]: Abstraction has 15690 states and 44302 transitions. [2022-03-15 14:51:15,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.0) internal successors, (123), 41 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:15,509 INFO L276 IsEmpty]: Start isEmpty. Operand 15690 states and 44302 transitions. [2022-03-15 14:51:15,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:51:15,530 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:15,530 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:15,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Forceful destruction successful, exit code 0 [2022-03-15 14:51:15,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 203 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2022-03-15 14:51:15,744 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:15,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:15,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1410967389, now seen corresponding path program 203 times [2022-03-15 14:51:15,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:15,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797575119] [2022-03-15 14:51:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:15,847 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:15,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797575119] [2022-03-15 14:51:15,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797575119] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:51:15,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813701936] [2022-03-15 14:51:15,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:51:15,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:15,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:51:15,849 INFO L229 MonitoredProcess]: Starting monitored process 204 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:51:15,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Waiting until timeout for monitored process [2022-03-15 14:51:16,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:51:16,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:51:16,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:51:16,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:51:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:51:16,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:51:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:51:16,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813701936] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:51:16,491 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:51:16,491 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:51:16,491 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943633705] [2022-03-15 14:51:16,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:51:16,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:51:16,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:16,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:51:16,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:51:16,492 INFO L87 Difference]: Start difference. First operand 15690 states and 44302 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:21,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:21,301 INFO L93 Difference]: Finished difference Result 21714 states and 60856 transitions. [2022-03-15 14:51:21,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-03-15 14:51:21,302 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:51:21,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:21,340 INFO L225 Difference]: With dead ends: 21714 [2022-03-15 14:51:21,340 INFO L226 Difference]: Without dead ends: 21618 [2022-03-15 14:51:21,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11520 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5052, Invalid=26454, Unknown=0, NotChecked=0, Total=31506 [2022-03-15 14:51:21,343 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 843 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 4246 SdHoareTripleChecker+Invalid, 2501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:21,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 4246 Invalid, 2501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:51:21,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21618 states. [2022-03-15 14:51:21,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21618 to 15482. [2022-03-15 14:51:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15482 states, 15481 states have (on average 2.821652348039532) internal successors, (43682), 15481 states have internal predecessors, (43682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15482 states to 15482 states and 43682 transitions. [2022-03-15 14:51:21,642 INFO L78 Accepts]: Start accepts. Automaton has 15482 states and 43682 transitions. Word has length 78 [2022-03-15 14:51:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:21,642 INFO L470 AbstractCegarLoop]: Abstraction has 15482 states and 43682 transitions. [2022-03-15 14:51:21,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 15482 states and 43682 transitions. [2022-03-15 14:51:21,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:51:21,663 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:21,663 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:21,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Ended with exit code 0 [2022-03-15 14:51:21,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2022-03-15 14:51:21,875 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:21,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:21,876 INFO L85 PathProgramCache]: Analyzing trace with hash -712926897, now seen corresponding path program 204 times [2022-03-15 14:51:21,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:21,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840075018] [2022-03-15 14:51:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:21,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:22,044 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:22,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840075018] [2022-03-15 14:51:22,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840075018] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:51:22,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396336808] [2022-03-15 14:51:22,045 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:51:22,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:22,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:51:22,046 INFO L229 MonitoredProcess]: Starting monitored process 205 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:51:22,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Waiting until timeout for monitored process [2022-03-15 14:51:22,218 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 14:51:22,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:51:22,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:51:22,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:51:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:51:22,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:51:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:51:22,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396336808] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:51:22,942 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:51:22,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:51:22,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25979028] [2022-03-15 14:51:22,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:51:22,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:51:22,943 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:22,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:51:22,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:51:22,943 INFO L87 Difference]: Start difference. First operand 15482 states and 43682 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:25,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:25,652 INFO L93 Difference]: Finished difference Result 18660 states and 52291 transitions. [2022-03-15 14:51:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-15 14:51:25,652 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:51:25,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:25,687 INFO L225 Difference]: With dead ends: 18660 [2022-03-15 14:51:25,687 INFO L226 Difference]: Without dead ends: 18526 [2022-03-15 14:51:25,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5132 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2618, Invalid=14152, Unknown=0, NotChecked=0, Total=16770 [2022-03-15 14:51:25,689 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 517 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 3477 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:25,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 3477 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:51:25,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18526 states. [2022-03-15 14:51:25,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18526 to 15526. [2022-03-15 14:51:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15526 states, 15525 states have (on average 2.817842190016103) internal successors, (43747), 15525 states have internal predecessors, (43747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15526 states to 15526 states and 43747 transitions. [2022-03-15 14:51:25,967 INFO L78 Accepts]: Start accepts. Automaton has 15526 states and 43747 transitions. Word has length 78 [2022-03-15 14:51:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:25,967 INFO L470 AbstractCegarLoop]: Abstraction has 15526 states and 43747 transitions. [2022-03-15 14:51:25,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 15526 states and 43747 transitions. [2022-03-15 14:51:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:51:25,989 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:25,989 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:26,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Forceful destruction successful, exit code 0 [2022-03-15 14:51:26,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 205 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2022-03-15 14:51:26,191 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:26,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:26,191 INFO L85 PathProgramCache]: Analyzing trace with hash -226430161, now seen corresponding path program 205 times [2022-03-15 14:51:26,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:26,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545383701] [2022-03-15 14:51:26,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:26,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:26,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:26,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545383701] [2022-03-15 14:51:26,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545383701] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:51:26,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296807078] [2022-03-15 14:51:26,362 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:51:26,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:26,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:51:26,363 INFO L229 MonitoredProcess]: Starting monitored process 206 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:51:26,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Waiting until timeout for monitored process [2022-03-15 14:51:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:26,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:51:26,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:51:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:26,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:51:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:27,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296807078] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:51:27,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:51:27,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:51:27,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066889704] [2022-03-15 14:51:27,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:51:27,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:51:27,565 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:27,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:51:27,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1594, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:51:27,566 INFO L87 Difference]: Start difference. First operand 15526 states and 43747 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:34,762 INFO L93 Difference]: Finished difference Result 21893 states and 61094 transitions. [2022-03-15 14:51:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-03-15 14:51:34,763 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:51:34,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:34,804 INFO L225 Difference]: With dead ends: 21893 [2022-03-15 14:51:34,804 INFO L226 Difference]: Without dead ends: 21787 [2022-03-15 14:51:34,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16587 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=7375, Invalid=36515, Unknown=0, NotChecked=0, Total=43890 [2022-03-15 14:51:34,809 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 879 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:34,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 4399 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:51:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21787 states. [2022-03-15 14:51:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21787 to 15594. [2022-03-15 14:51:35,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15594 states, 15593 states have (on average 2.8180593856217535) internal successors, (43942), 15593 states have internal predecessors, (43942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15594 states to 15594 states and 43942 transitions. [2022-03-15 14:51:35,242 INFO L78 Accepts]: Start accepts. Automaton has 15594 states and 43942 transitions. Word has length 78 [2022-03-15 14:51:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:35,242 INFO L470 AbstractCegarLoop]: Abstraction has 15594 states and 43942 transitions. [2022-03-15 14:51:35,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 15594 states and 43942 transitions. [2022-03-15 14:51:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:51:35,301 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:35,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:35,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Forceful destruction successful, exit code 0 [2022-03-15 14:51:35,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,206 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:35,518 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:35,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1513039107, now seen corresponding path program 206 times [2022-03-15 14:51:35,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:35,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139611024] [2022-03-15 14:51:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:35,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:35,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:35,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139611024] [2022-03-15 14:51:35,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139611024] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:51:35,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999555299] [2022-03-15 14:51:35,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:51:35,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:35,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:51:35,693 INFO L229 MonitoredProcess]: Starting monitored process 207 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:51:35,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Waiting until timeout for monitored process [2022-03-15 14:51:35,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:51:35,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:51:35,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:51:35,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:51:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:36,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:51:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:36,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999555299] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:51:36,774 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:51:36,774 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:51:36,774 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696028038] [2022-03-15 14:51:36,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:51:36,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:51:36,774 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:51:36,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1604, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:51:36,775 INFO L87 Difference]: Start difference. First operand 15594 states and 43942 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:44,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:44,598 INFO L93 Difference]: Finished difference Result 23105 states and 64298 transitions. [2022-03-15 14:51:44,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2022-03-15 14:51:44,599 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:51:44,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:44,698 INFO L225 Difference]: With dead ends: 23105 [2022-03-15 14:51:44,698 INFO L226 Difference]: Without dead ends: 22905 [2022-03-15 14:51:44,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24960 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=10137, Invalid=52613, Unknown=0, NotChecked=0, Total=62750 [2022-03-15 14:51:44,700 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 1059 mSDsluCounter, 5310 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 5383 SdHoareTripleChecker+Invalid, 3051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:44,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 5383 Invalid, 3051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2818 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:51:44,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22905 states. [2022-03-15 14:51:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22905 to 15670. [2022-03-15 14:51:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15670 states, 15669 states have (on average 2.8192609611334483) internal successors, (44175), 15669 states have internal predecessors, (44175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15670 states to 15670 states and 44175 transitions. [2022-03-15 14:51:44,970 INFO L78 Accepts]: Start accepts. Automaton has 15670 states and 44175 transitions. Word has length 78 [2022-03-15 14:51:44,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:44,970 INFO L470 AbstractCegarLoop]: Abstraction has 15670 states and 44175 transitions. [2022-03-15 14:51:44,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:44,970 INFO L276 IsEmpty]: Start isEmpty. Operand 15670 states and 44175 transitions. [2022-03-15 14:51:44,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:51:44,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:44,991 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:45,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Forceful destruction successful, exit code 0 [2022-03-15 14:51:45,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2022-03-15 14:51:45,208 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash -238873891, now seen corresponding path program 207 times [2022-03-15 14:51:45,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:45,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106845583] [2022-03-15 14:51:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:45,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:45,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:45,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106845583] [2022-03-15 14:51:45,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106845583] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:51:45,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512293248] [2022-03-15 14:51:45,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:51:45,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:45,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:51:45,370 INFO L229 MonitoredProcess]: Starting monitored process 208 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:51:45,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Waiting until timeout for monitored process [2022-03-15 14:51:45,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:51:45,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:51:45,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:51:45,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:51:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:51:45,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:51:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:51:45,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512293248] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:51:45,977 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:51:45,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:51:45,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783851241] [2022-03-15 14:51:45,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:51:45,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:51:45,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:45,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:51:45,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1165, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:51:45,978 INFO L87 Difference]: Start difference. First operand 15670 states and 44175 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:47,941 INFO L93 Difference]: Finished difference Result 19544 states and 54882 transitions. [2022-03-15 14:51:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-03-15 14:51:47,941 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:51:47,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:47,980 INFO L225 Difference]: With dead ends: 19544 [2022-03-15 14:51:47,981 INFO L226 Difference]: Without dead ends: 19466 [2022-03-15 14:51:47,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4999 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2670, Invalid=13080, Unknown=0, NotChecked=0, Total=15750 [2022-03-15 14:51:47,983 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 475 mSDsluCounter, 3388 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 3504 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:47,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 3504 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:51:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19466 states. [2022-03-15 14:51:48,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19466 to 15878. [2022-03-15 14:51:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15878 states, 15877 states have (on average 2.8188574667758393) internal successors, (44755), 15877 states have internal predecessors, (44755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15878 states to 15878 states and 44755 transitions. [2022-03-15 14:51:48,367 INFO L78 Accepts]: Start accepts. Automaton has 15878 states and 44755 transitions. Word has length 78 [2022-03-15 14:51:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:48,367 INFO L470 AbstractCegarLoop]: Abstraction has 15878 states and 44755 transitions. [2022-03-15 14:51:48,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 15878 states and 44755 transitions. [2022-03-15 14:51:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:51:48,389 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:48,389 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:48,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Ended with exit code 0 [2022-03-15 14:51:48,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2022-03-15 14:51:48,607 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:48,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1504581549, now seen corresponding path program 208 times [2022-03-15 14:51:48,607 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:48,607 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691574834] [2022-03-15 14:51:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:48,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:48,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:48,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691574834] [2022-03-15 14:51:48,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691574834] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:51:48,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145996128] [2022-03-15 14:51:48,793 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:51:48,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:48,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:51:48,794 INFO L229 MonitoredProcess]: Starting monitored process 209 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:51:48,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Waiting until timeout for monitored process [2022-03-15 14:51:48,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:51:48,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:51:48,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 14:51:48,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:51:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:49,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:51:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:49,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145996128] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:51:49,634 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:51:49,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-03-15 14:51:49,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345449044] [2022-03-15 14:51:49,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:51:49,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 14:51:49,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 14:51:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1809, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:51:49,635 INFO L87 Difference]: Start difference. First operand 15878 states and 44755 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:52,018 INFO L93 Difference]: Finished difference Result 23454 states and 65528 transitions. [2022-03-15 14:51:52,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-15 14:51:52,018 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:51:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:52,061 INFO L225 Difference]: With dead ends: 23454 [2022-03-15 14:51:52,062 INFO L226 Difference]: Without dead ends: 23331 [2022-03-15 14:51:52,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6418 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2106, Invalid=17916, Unknown=0, NotChecked=0, Total=20022 [2022-03-15 14:51:52,062 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 758 mSDsluCounter, 5766 mSDsCounter, 0 mSdLazyCounter, 2915 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 5805 SdHoareTripleChecker+Invalid, 3030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:52,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 5805 Invalid, 3030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2915 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:51:52,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23331 states. [2022-03-15 14:51:52,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23331 to 16138. [2022-03-15 14:51:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16138 states, 16137 states have (on average 2.8186775732788) internal successors, (45485), 16137 states have internal predecessors, (45485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16138 states to 16138 states and 45485 transitions. [2022-03-15 14:51:52,385 INFO L78 Accepts]: Start accepts. Automaton has 16138 states and 45485 transitions. Word has length 78 [2022-03-15 14:51:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:52,385 INFO L470 AbstractCegarLoop]: Abstraction has 16138 states and 45485 transitions. [2022-03-15 14:51:52,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:52,386 INFO L276 IsEmpty]: Start isEmpty. Operand 16138 states and 45485 transitions. [2022-03-15 14:51:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:51:52,406 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:52,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:52,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Forceful destruction successful, exit code 0 [2022-03-15 14:51:52,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,209 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:52,611 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:52,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1018084813, now seen corresponding path program 209 times [2022-03-15 14:51:52,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:52,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522501089] [2022-03-15 14:51:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:52,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:52,751 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:52,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522501089] [2022-03-15 14:51:52,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522501089] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:51:52,751 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164309042] [2022-03-15 14:51:52,751 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:51:52,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:52,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:51:52,752 INFO L229 MonitoredProcess]: Starting monitored process 210 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:51:52,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Waiting until timeout for monitored process [2022-03-15 14:51:52,963 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:51:52,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:51:52,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:51:52,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:51:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:51:53,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:51:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:51:53,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164309042] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:51:53,691 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:51:53,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:51:53,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875469990] [2022-03-15 14:51:53,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:51:53,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:51:53,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:51:53,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:51:53,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:51:53,692 INFO L87 Difference]: Start difference. First operand 16138 states and 45485 transitions. Second operand has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:51:58,189 INFO L93 Difference]: Finished difference Result 25463 states and 71354 transitions. [2022-03-15 14:51:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-03-15 14:51:58,189 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:51:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:51:58,246 INFO L225 Difference]: With dead ends: 25463 [2022-03-15 14:51:58,246 INFO L226 Difference]: Without dead ends: 25337 [2022-03-15 14:51:58,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13788 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5488, Invalid=31568, Unknown=0, NotChecked=0, Total=37056 [2022-03-15 14:51:58,249 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 841 mSDsluCounter, 3870 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 4022 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:51:58,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 4022 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:51:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25337 states. [2022-03-15 14:51:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25337 to 16894. [2022-03-15 14:51:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16894 states, 16893 states have (on average 2.8350204226602735) internal successors, (47892), 16893 states have internal predecessors, (47892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:58,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16894 states to 16894 states and 47892 transitions. [2022-03-15 14:51:58,644 INFO L78 Accepts]: Start accepts. Automaton has 16894 states and 47892 transitions. Word has length 78 [2022-03-15 14:51:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:51:58,644 INFO L470 AbstractCegarLoop]: Abstraction has 16894 states and 47892 transitions. [2022-03-15 14:51:58,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 37 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:51:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 16894 states and 47892 transitions. [2022-03-15 14:51:58,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:51:58,669 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:51:58,669 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:51:58,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Forceful destruction successful, exit code 0 [2022-03-15 14:51:58,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,210 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:58,883 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:51:58,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:51:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1191660701, now seen corresponding path program 210 times [2022-03-15 14:51:58,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:51:58,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770163318] [2022-03-15 14:51:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:51:58,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:51:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:51:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:59,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:51:59,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770163318] [2022-03-15 14:51:59,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770163318] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:51:59,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774179780] [2022-03-15 14:51:59,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:51:59,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:51:59,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:51:59,026 INFO L229 MonitoredProcess]: Starting monitored process 211 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:51:59,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Waiting until timeout for monitored process [2022-03-15 14:51:59,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:51:59,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:51:59,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:51:59,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:51:59,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:51:59,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:52:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:00,146 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774179780] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:52:00,146 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:52:00,146 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:52:00,146 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683170252] [2022-03-15 14:52:00,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:52:00,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:52:00,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:52:00,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:52:00,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1606, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:52:00,147 INFO L87 Difference]: Start difference. First operand 16894 states and 47892 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:09,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:52:09,601 INFO L93 Difference]: Finished difference Result 25048 states and 70041 transitions. [2022-03-15 14:52:09,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2022-03-15 14:52:09,601 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:52:09,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:52:09,656 INFO L225 Difference]: With dead ends: 25048 [2022-03-15 14:52:09,656 INFO L226 Difference]: Without dead ends: 24967 [2022-03-15 14:52:09,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24561 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=10098, Invalid=53154, Unknown=0, NotChecked=0, Total=63252 [2022-03-15 14:52:09,660 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1121 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:52:09,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 4527 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 14:52:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24967 states. [2022-03-15 14:52:09,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24967 to 16874. [2022-03-15 14:52:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16874 states, 16873 states have (on average 2.8358323949505126) internal successors, (47849), 16873 states have internal predecessors, (47849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16874 states to 16874 states and 47849 transitions. [2022-03-15 14:52:10,030 INFO L78 Accepts]: Start accepts. Automaton has 16874 states and 47849 transitions. Word has length 78 [2022-03-15 14:52:10,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:52:10,030 INFO L470 AbstractCegarLoop]: Abstraction has 16874 states and 47849 transitions. [2022-03-15 14:52:10,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 16874 states and 47849 transitions. [2022-03-15 14:52:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:52:10,053 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:52:10,053 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:52:10,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Forceful destruction successful, exit code 0 [2022-03-15 14:52:10,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 211 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable242 [2022-03-15 14:52:10,268 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:52:10,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:52:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1678157437, now seen corresponding path program 211 times [2022-03-15 14:52:10,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:52:10,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100578680] [2022-03-15 14:52:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:52:10,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:52:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:52:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:10,422 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:52:10,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100578680] [2022-03-15 14:52:10,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100578680] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:52:10,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275069310] [2022-03-15 14:52:10,423 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:52:10,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:52:10,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:52:10,424 INFO L229 MonitoredProcess]: Starting monitored process 212 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:52:10,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Waiting until timeout for monitored process [2022-03-15 14:52:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:52:10,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:52:10,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:52:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:10,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:52:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:11,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275069310] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:52:11,726 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:52:11,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:52:11,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263704814] [2022-03-15 14:52:11,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:52:11,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:52:11,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:52:11,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:52:11,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1593, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:52:11,727 INFO L87 Difference]: Start difference. First operand 16874 states and 47849 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:52:19,222 INFO L93 Difference]: Finished difference Result 26313 states and 73626 transitions. [2022-03-15 14:52:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-03-15 14:52:19,223 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:52:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:52:19,273 INFO L225 Difference]: With dead ends: 26313 [2022-03-15 14:52:19,273 INFO L226 Difference]: Without dead ends: 26217 [2022-03-15 14:52:19,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21930 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=9767, Invalid=46165, Unknown=0, NotChecked=0, Total=55932 [2022-03-15 14:52:19,277 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1029 mSDsluCounter, 5130 mSDsCounter, 0 mSdLazyCounter, 2828 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 5201 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:52:19,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 5201 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2828 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:52:19,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26217 states. [2022-03-15 14:52:19,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26217 to 16770. [2022-03-15 14:52:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16770 states, 16769 states have (on average 2.8339793666885322) internal successors, (47523), 16769 states have internal predecessors, (47523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16770 states to 16770 states and 47523 transitions. [2022-03-15 14:52:19,663 INFO L78 Accepts]: Start accepts. Automaton has 16770 states and 47523 transitions. Word has length 78 [2022-03-15 14:52:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:52:19,663 INFO L470 AbstractCegarLoop]: Abstraction has 16770 states and 47523 transitions. [2022-03-15 14:52:19,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 16770 states and 47523 transitions. [2022-03-15 14:52:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:52:19,688 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:52:19,689 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:52:19,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Forceful destruction successful, exit code 0 [2022-03-15 14:52:19,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243,212 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:52:19,902 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:52:19,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:52:19,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1359944535, now seen corresponding path program 212 times [2022-03-15 14:52:19,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:52:19,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346350609] [2022-03-15 14:52:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:52:19,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:52:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:52:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:20,011 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:52:20,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346350609] [2022-03-15 14:52:20,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346350609] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:52:20,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532866209] [2022-03-15 14:52:20,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:52:20,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:52:20,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:52:20,013 INFO L229 MonitoredProcess]: Starting monitored process 213 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:52:20,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Waiting until timeout for monitored process [2022-03-15 14:52:20,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:52:20,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:52:20,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:52:20,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:52:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:20,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:52:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:20,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532866209] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:52:20,874 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:52:20,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:52:20,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007012782] [2022-03-15 14:52:20,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:52:20,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:52:20,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:52:20,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:52:20,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:52:20,875 INFO L87 Difference]: Start difference. First operand 16770 states and 47523 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:24,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:52:24,680 INFO L93 Difference]: Finished difference Result 21892 states and 61546 transitions. [2022-03-15 14:52:24,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-03-15 14:52:24,680 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:52:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:52:24,724 INFO L225 Difference]: With dead ends: 21892 [2022-03-15 14:52:24,724 INFO L226 Difference]: Without dead ends: 21790 [2022-03-15 14:52:24,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8329 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3812, Invalid=21310, Unknown=0, NotChecked=0, Total=25122 [2022-03-15 14:52:24,727 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 650 mSDsluCounter, 5416 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 5517 SdHoareTripleChecker+Invalid, 3229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:52:24,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 5517 Invalid, 3229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3065 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:52:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21790 states. [2022-03-15 14:52:25,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21790 to 16782. [2022-03-15 14:52:25,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16782 states, 16781 states have (on average 2.832965854239914) internal successors, (47540), 16781 states have internal predecessors, (47540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16782 states to 16782 states and 47540 transitions. [2022-03-15 14:52:25,170 INFO L78 Accepts]: Start accepts. Automaton has 16782 states and 47540 transitions. Word has length 78 [2022-03-15 14:52:25,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:52:25,170 INFO L470 AbstractCegarLoop]: Abstraction has 16782 states and 47540 transitions. [2022-03-15 14:52:25,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 16782 states and 47540 transitions. [2022-03-15 14:52:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:52:25,192 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:52:25,192 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:52:25,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Forceful destruction successful, exit code 0 [2022-03-15 14:52:25,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 213 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2022-03-15 14:52:25,395 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:52:25,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:52:25,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1846441271, now seen corresponding path program 213 times [2022-03-15 14:52:25,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:52:25,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456636573] [2022-03-15 14:52:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:52:25,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:52:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:52:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:25,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:52:25,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456636573] [2022-03-15 14:52:25,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456636573] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:52:25,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842925252] [2022-03-15 14:52:25,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:52:25,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:52:25,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:52:25,504 INFO L229 MonitoredProcess]: Starting monitored process 214 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:52:25,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Waiting until timeout for monitored process [2022-03-15 14:52:25,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:52:25,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:52:25,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:52:25,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:52:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:25,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:52:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:26,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842925252] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:52:26,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:52:26,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:52:26,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890898625] [2022-03-15 14:52:26,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:52:26,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:52:26,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:52:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:52:26,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1611, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:52:26,341 INFO L87 Difference]: Start difference. First operand 16782 states and 47540 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:30,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:52:30,783 INFO L93 Difference]: Finished difference Result 23927 states and 67109 transitions. [2022-03-15 14:52:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-15 14:52:30,783 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:52:30,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:52:30,833 INFO L225 Difference]: With dead ends: 23927 [2022-03-15 14:52:30,833 INFO L226 Difference]: Without dead ends: 23813 [2022-03-15 14:52:30,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12109 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5730, Invalid=28310, Unknown=0, NotChecked=0, Total=34040 [2022-03-15 14:52:30,835 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 858 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:52:30,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 3445 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 14:52:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23813 states. [2022-03-15 14:52:31,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23813 to 16970. [2022-03-15 14:52:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16970 states, 16969 states have (on average 2.8320466733455123) internal successors, (48057), 16969 states have internal predecessors, (48057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16970 states to 16970 states and 48057 transitions. [2022-03-15 14:52:31,222 INFO L78 Accepts]: Start accepts. Automaton has 16970 states and 48057 transitions. Word has length 78 [2022-03-15 14:52:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:52:31,223 INFO L470 AbstractCegarLoop]: Abstraction has 16970 states and 48057 transitions. [2022-03-15 14:52:31,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 16970 states and 48057 transitions. [2022-03-15 14:52:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:52:31,249 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:52:31,249 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:52:31,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Forceful destruction successful, exit code 0 [2022-03-15 14:52:31,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2022-03-15 14:52:31,466 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:52:31,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:52:31,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1833997541, now seen corresponding path program 214 times [2022-03-15 14:52:31,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:52:31,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568761858] [2022-03-15 14:52:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:52:31,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:52:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:52:31,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:31,610 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:52:31,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568761858] [2022-03-15 14:52:31,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568761858] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:52:31,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856237944] [2022-03-15 14:52:31,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:52:31,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:52:31,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:52:31,611 INFO L229 MonitoredProcess]: Starting monitored process 215 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:52:31,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Waiting until timeout for monitored process [2022-03-15 14:52:31,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:52:31,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:52:31,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 14:52:31,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:52:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:32,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:52:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:32,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856237944] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:52:32,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:52:32,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-03-15 14:52:32,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524063891] [2022-03-15 14:52:32,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:52:32,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 14:52:32,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:52:32,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 14:52:32,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1809, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 14:52:32,703 INFO L87 Difference]: Start difference. First operand 16970 states and 48057 transitions. Second operand has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:52:37,504 INFO L93 Difference]: Finished difference Result 26896 states and 75362 transitions. [2022-03-15 14:52:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-03-15 14:52:37,504 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:52:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:52:37,561 INFO L225 Difference]: With dead ends: 26896 [2022-03-15 14:52:37,561 INFO L226 Difference]: Without dead ends: 26810 [2022-03-15 14:52:37,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13622 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4123, Invalid=33707, Unknown=0, NotChecked=0, Total=37830 [2022-03-15 14:52:37,565 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1063 mSDsluCounter, 5763 mSDsCounter, 0 mSdLazyCounter, 3459 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 5849 SdHoareTripleChecker+Invalid, 3657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 3459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:52:37,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 5849 Invalid, 3657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 3459 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 14:52:37,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26810 states. [2022-03-15 14:52:38,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26810 to 16982. [2022-03-15 14:52:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16982 states, 16981 states have (on average 2.8319886932453917) internal successors, (48090), 16981 states have internal predecessors, (48090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16982 states to 16982 states and 48090 transitions. [2022-03-15 14:52:38,149 INFO L78 Accepts]: Start accepts. Automaton has 16982 states and 48090 transitions. Word has length 78 [2022-03-15 14:52:38,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:52:38,149 INFO L470 AbstractCegarLoop]: Abstraction has 16982 states and 48090 transitions. [2022-03-15 14:52:38,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.0444444444444443) internal successors, (137), 45 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:38,149 INFO L276 IsEmpty]: Start isEmpty. Operand 16982 states and 48090 transitions. [2022-03-15 14:52:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:52:38,173 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:52:38,173 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:52:38,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Forceful destruction successful, exit code 0 [2022-03-15 14:52:38,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 215 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2022-03-15 14:52:38,379 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:52:38,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:52:38,380 INFO L85 PathProgramCache]: Analyzing trace with hash -298170925, now seen corresponding path program 215 times [2022-03-15 14:52:38,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:52:38,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694899653] [2022-03-15 14:52:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:52:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:52:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:52:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:38,554 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:52:38,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694899653] [2022-03-15 14:52:38,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694899653] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:52:38,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498359188] [2022-03-15 14:52:38,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:52:38,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:52:38,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:52:38,555 INFO L229 MonitoredProcess]: Starting monitored process 216 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:52:38,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Waiting until timeout for monitored process [2022-03-15 14:52:38,726 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 14:52:38,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:52:38,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:52:38,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:52:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:39,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:52:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:39,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498359188] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:52:39,637 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:52:39,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:52:39,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919052355] [2022-03-15 14:52:39,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:52:39,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:52:39,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:52:39,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:52:39,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:52:39,642 INFO L87 Difference]: Start difference. First operand 16982 states and 48090 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:52:44,788 INFO L93 Difference]: Finished difference Result 24307 states and 68022 transitions. [2022-03-15 14:52:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-03-15 14:52:44,788 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:52:44,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:52:44,834 INFO L225 Difference]: With dead ends: 24307 [2022-03-15 14:52:44,834 INFO L226 Difference]: Without dead ends: 24205 [2022-03-15 14:52:44,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14306 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=6487, Invalid=33313, Unknown=0, NotChecked=0, Total=39800 [2022-03-15 14:52:44,836 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 898 mSDsluCounter, 4623 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:52:44,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 4697 Invalid, 2898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 14:52:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24205 states. [2022-03-15 14:52:45,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24205 to 17098. [2022-03-15 14:52:45,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17098 states, 17097 states have (on average 2.8326022109141955) internal successors, (48429), 17097 states have internal predecessors, (48429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17098 states to 17098 states and 48429 transitions. [2022-03-15 14:52:45,201 INFO L78 Accepts]: Start accepts. Automaton has 17098 states and 48429 transitions. Word has length 78 [2022-03-15 14:52:45,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:52:45,202 INFO L470 AbstractCegarLoop]: Abstraction has 17098 states and 48429 transitions. [2022-03-15 14:52:45,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand 17098 states and 48429 transitions. [2022-03-15 14:52:45,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:52:45,228 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:52:45,228 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:52:45,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Forceful destruction successful, exit code 0 [2022-03-15 14:52:45,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,216 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:52:45,445 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:52:45,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:52:45,445 INFO L85 PathProgramCache]: Analyzing trace with hash 188325811, now seen corresponding path program 216 times [2022-03-15 14:52:45,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:52:45,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233310879] [2022-03-15 14:52:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:52:45,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:52:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:52:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:45,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:52:45,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233310879] [2022-03-15 14:52:45,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233310879] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:52:45,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285551032] [2022-03-15 14:52:45,552 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:52:45,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:52:45,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:52:45,553 INFO L229 MonitoredProcess]: Starting monitored process 217 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:52:45,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Waiting until timeout for monitored process [2022-03-15 14:52:45,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 14:52:45,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:52:45,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:52:45,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:52:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:45,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:52:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:46,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285551032] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:52:46,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:52:46,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:52:46,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627053263] [2022-03-15 14:52:46,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:52:46,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:52:46,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:52:46,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:52:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1604, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:52:46,471 INFO L87 Difference]: Start difference. First operand 17098 states and 48429 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:51,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:52:51,565 INFO L93 Difference]: Finished difference Result 25786 states and 72199 transitions. [2022-03-15 14:52:51,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2022-03-15 14:52:51,565 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:52:51,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:52:51,620 INFO L225 Difference]: With dead ends: 25786 [2022-03-15 14:52:51,620 INFO L226 Difference]: Without dead ends: 25692 [2022-03-15 14:52:51,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17386 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7992, Invalid=38018, Unknown=0, NotChecked=0, Total=46010 [2022-03-15 14:52:51,623 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 952 mSDsluCounter, 4358 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 4450 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:52:51,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 4450 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:52:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25692 states. [2022-03-15 14:52:52,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25692 to 16962. [2022-03-15 14:52:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16962 states, 16961 states have (on average 2.833972053534579) internal successors, (48067), 16961 states have internal predecessors, (48067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:52,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16962 states to 16962 states and 48067 transitions. [2022-03-15 14:52:52,146 INFO L78 Accepts]: Start accepts. Automaton has 16962 states and 48067 transitions. Word has length 78 [2022-03-15 14:52:52,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:52:52,146 INFO L470 AbstractCegarLoop]: Abstraction has 16962 states and 48067 transitions. [2022-03-15 14:52:52,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:52,146 INFO L276 IsEmpty]: Start isEmpty. Operand 16962 states and 48067 transitions. [2022-03-15 14:52:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:52:52,167 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:52:52,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:52:52,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Forceful destruction successful, exit code 0 [2022-03-15 14:52:52,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable248 [2022-03-15 14:52:52,383 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:52:52,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:52:52,383 INFO L85 PathProgramCache]: Analyzing trace with hash 175882081, now seen corresponding path program 217 times [2022-03-15 14:52:52,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:52:52,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655060141] [2022-03-15 14:52:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:52:52,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:52:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:52:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:52,546 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:52:52,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655060141] [2022-03-15 14:52:52,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655060141] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:52:52,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418483073] [2022-03-15 14:52:52,546 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:52:52,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:52:52,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:52:52,548 INFO L229 MonitoredProcess]: Starting monitored process 218 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:52:52,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Waiting until timeout for monitored process [2022-03-15 14:52:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:52:52,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:52:52,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:52:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:53,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:52:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:53,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418483073] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:52:53,874 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:52:53,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:52:53,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141735921] [2022-03-15 14:52:53,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:52:53,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:52:53,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:52:53,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:52:53,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1611, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:52:53,875 INFO L87 Difference]: Start difference. First operand 16962 states and 48067 transitions. Second operand has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:52:58,519 INFO L93 Difference]: Finished difference Result 25038 states and 70026 transitions. [2022-03-15 14:52:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-03-15 14:52:58,520 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:52:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:52:58,572 INFO L225 Difference]: With dead ends: 25038 [2022-03-15 14:52:58,572 INFO L226 Difference]: Without dead ends: 24956 [2022-03-15 14:52:58,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12697 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5964, Invalid=29568, Unknown=0, NotChecked=0, Total=35532 [2022-03-15 14:52:58,574 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 945 mSDsluCounter, 4133 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 4259 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:52:58,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [945 Valid, 4259 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:52:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24956 states. [2022-03-15 14:52:58,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24956 to 17410. [2022-03-15 14:52:58,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17410 states, 17409 states have (on average 2.830662301108622) internal successors, (49279), 17409 states have internal predecessors, (49279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17410 states to 17410 states and 49279 transitions. [2022-03-15 14:52:58,973 INFO L78 Accepts]: Start accepts. Automaton has 17410 states and 49279 transitions. Word has length 78 [2022-03-15 14:52:58,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:52:58,973 INFO L470 AbstractCegarLoop]: Abstraction has 17410 states and 49279 transitions. [2022-03-15 14:52:58,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.86046511627907) internal successors, (123), 43 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:52:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand 17410 states and 49279 transitions. [2022-03-15 14:52:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:52:58,997 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:52:58,997 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:52:59,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Forceful destruction successful, exit code 0 [2022-03-15 14:52:59,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2022-03-15 14:52:59,214 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:52:59,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:52:59,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1819426219, now seen corresponding path program 218 times [2022-03-15 14:52:59,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:52:59,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536493758] [2022-03-15 14:52:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:52:59,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:52:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:52:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:59,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:52:59,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536493758] [2022-03-15 14:52:59,350 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536493758] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:52:59,350 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780112180] [2022-03-15 14:52:59,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:52:59,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:52:59,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:52:59,351 INFO L229 MonitoredProcess]: Starting monitored process 219 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:52:59,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Waiting until timeout for monitored process [2022-03-15 14:52:59,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:52:59,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:52:59,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 14:52:59,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:52:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:52:59,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:53:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:53:00,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780112180] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:53:00,540 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:53:00,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 43 [2022-03-15 14:53:00,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262295723] [2022-03-15 14:53:00,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:53:00,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 14:53:00,542 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:53:00,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 14:53:00,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1574, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:53:00,543 INFO L87 Difference]: Start difference. First operand 17410 states and 49279 transitions. Second operand has 43 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 43 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:53:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:53:03,394 INFO L93 Difference]: Finished difference Result 20350 states and 57072 transitions. [2022-03-15 14:53:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-15 14:53:03,405 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 43 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:53:03,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:53:03,439 INFO L225 Difference]: With dead ends: 20350 [2022-03-15 14:53:03,439 INFO L226 Difference]: Without dead ends: 20247 [2022-03-15 14:53:03,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4377 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2250, Invalid=11792, Unknown=0, NotChecked=0, Total=14042 [2022-03-15 14:53:03,440 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 633 mSDsluCounter, 3632 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 3731 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:53:03,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 3731 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:53:03,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20247 states. [2022-03-15 14:53:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20247 to 17446. [2022-03-15 14:53:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17446 states, 17445 states have (on average 2.828202923473775) internal successors, (49338), 17445 states have internal predecessors, (49338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:53:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17446 states to 17446 states and 49338 transitions. [2022-03-15 14:53:03,763 INFO L78 Accepts]: Start accepts. Automaton has 17446 states and 49338 transitions. Word has length 78 [2022-03-15 14:53:03,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:53:03,763 INFO L470 AbstractCegarLoop]: Abstraction has 17446 states and 49338 transitions. [2022-03-15 14:53:03,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 43 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:53:03,763 INFO L276 IsEmpty]: Start isEmpty. Operand 17446 states and 49338 transitions. [2022-03-15 14:53:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:53:03,791 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:53:03,791 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:53:03,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Forceful destruction successful, exit code 0 [2022-03-15 14:53:04,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,219 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:53:04,008 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:53:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:53:04,008 INFO L85 PathProgramCache]: Analyzing trace with hash -694273339, now seen corresponding path program 219 times [2022-03-15 14:53:04,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:53:04,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218154874] [2022-03-15 14:53:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:53:04,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:53:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:53:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:53:04,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:53:04,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218154874] [2022-03-15 14:53:04,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218154874] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:53:04,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315051120] [2022-03-15 14:53:04,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:53:04,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:53:04,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:53:04,126 INFO L229 MonitoredProcess]: Starting monitored process 220 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:53:04,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Waiting until timeout for monitored process [2022-03-15 14:53:04,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 14:53:04,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:53:04,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:53:04,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:53:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:53:04,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:53:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:53:04,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315051120] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:53:04,794 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:53:04,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 37 [2022-03-15 14:53:04,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949102318] [2022-03-15 14:53:04,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:53:04,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 14:53:04,795 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:53:04,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 14:53:04,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:53:04,795 INFO L87 Difference]: Start difference. First operand 17446 states and 49338 transitions. Second operand has 37 states, 37 states have (on average 3.4594594594594597) internal successors, (128), 37 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:53:05,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:53:05,776 INFO L93 Difference]: Finished difference Result 18609 states and 52460 transitions. [2022-03-15 14:53:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 14:53:05,776 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4594594594594597) internal successors, (128), 37 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:53:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:53:05,810 INFO L225 Difference]: With dead ends: 18609 [2022-03-15 14:53:05,811 INFO L226 Difference]: Without dead ends: 18494 [2022-03-15 14:53:05,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1106, Invalid=5214, Unknown=0, NotChecked=0, Total=6320 [2022-03-15 14:53:05,812 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 276 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:53:05,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 3733 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:53:05,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18494 states. [2022-03-15 14:53:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18494 to 17378. [2022-03-15 14:53:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17378 states, 17377 states have (on average 2.8264372446337114) internal successors, (49115), 17377 states have internal predecessors, (49115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:53:06,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17378 states to 17378 states and 49115 transitions. [2022-03-15 14:53:06,130 INFO L78 Accepts]: Start accepts. Automaton has 17378 states and 49115 transitions. Word has length 78 [2022-03-15 14:53:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:53:06,130 INFO L470 AbstractCegarLoop]: Abstraction has 17378 states and 49115 transitions. [2022-03-15 14:53:06,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4594594594594597) internal successors, (128), 37 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:53:06,131 INFO L276 IsEmpty]: Start isEmpty. Operand 17378 states and 49115 transitions. [2022-03-15 14:53:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:53:06,153 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:53:06,153 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:53:06,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Forceful destruction successful, exit code 0 [2022-03-15 14:53:06,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251,220 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:53:06,369 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:53:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:53:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1392632447, now seen corresponding path program 220 times [2022-03-15 14:53:06,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:53:06,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605872796] [2022-03-15 14:53:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:53:06,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:53:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:53:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:53:06,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:53:06,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605872796] [2022-03-15 14:53:06,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605872796] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:53:06,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009448280] [2022-03-15 14:53:06,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:53:06,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:53:06,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:53:06,513 INFO L229 MonitoredProcess]: Starting monitored process 221 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:53:06,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Waiting until timeout for monitored process [2022-03-15 14:53:06,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:53:06,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:53:06,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 14:53:06,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:53:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:53:06,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:53:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:53:07,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009448280] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:53:07,552 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:53:07,553 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 42 [2022-03-15 14:53:07,553 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202458533] [2022-03-15 14:53:07,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:53:07,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:53:07,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:53:07,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:53:07,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1540, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:53:07,553 INFO L87 Difference]: Start difference. First operand 17378 states and 49115 transitions. Second operand has 42 states, 42 states have (on average 2.9523809523809526) internal successors, (124), 42 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:53:12,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:53:12,254 INFO L93 Difference]: Finished difference Result 22686 states and 63723 transitions. [2022-03-15 14:53:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-15 14:53:12,254 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9523809523809526) internal successors, (124), 42 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-03-15 14:53:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:53:12,297 INFO L225 Difference]: With dead ends: 22686 [2022-03-15 14:53:12,297 INFO L226 Difference]: Without dead ends: 22616 [2022-03-15 14:53:12,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11796 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5991, Invalid=27315, Unknown=0, NotChecked=0, Total=33306 [2022-03-15 14:53:12,300 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 785 mSDsluCounter, 4712 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 4775 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:53:12,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 4775 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 14:53:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22616 states. [2022-03-15 14:53:12,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22616 to 17318. [2022-03-15 14:53:12,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17318 states, 17317 states have (on average 2.826009123982214) internal successors, (48938), 17317 states have internal predecessors, (48938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:53:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17318 states to 17318 states and 48938 transitions. [2022-03-15 14:53:12,687 INFO L78 Accepts]: Start accepts. Automaton has 17318 states and 48938 transitions. Word has length 78 [2022-03-15 14:53:12,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:53:12,687 INFO L470 AbstractCegarLoop]: Abstraction has 17318 states and 48938 transitions. [2022-03-15 14:53:12,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9523809523809526) internal successors, (124), 42 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:53:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 17318 states and 48938 transitions. [2022-03-15 14:53:12,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-15 14:53:12,710 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:53:12,710 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:53:12,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Forceful destruction successful, exit code 0 [2022-03-15 14:53:12,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 221 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable252 [2022-03-15 14:53:12,926 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:53:12,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:53:12,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1531374049, now seen corresponding path program 221 times [2022-03-15 14:53:12,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:53:12,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534626156] [2022-03-15 14:53:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:53:12,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:53:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:53:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:53:13,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:53:13,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534626156] [2022-03-15 14:53:13,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534626156] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:53:13,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134794073] [2022-03-15 14:53:13,094 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:53:13,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:53:13,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:53:13,096 INFO L229 MonitoredProcess]: Starting monitored process 222 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:53:13,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Waiting until timeout for monitored process [2022-03-15 14:53:13,270 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:53:13,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:53:13,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:53:13,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:53:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:53:13,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-03-15 14:53:13,987 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-03-15 14:53:13,989 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 14:53:13,998 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 14:53:14,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Forceful destruction successful, exit code 0 [2022-03-15 14:53:14,023 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 14:53:14,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,222 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:53:14,190 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 2ms.. [2022-03-15 14:53:14,191 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 14:53:14,191 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 14:53:14,193 INFO L732 BasicCegarLoop]: Path program histogram: [221, 20, 6, 6, 1] [2022-03-15 14:53:14,195 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 14:53:14,195 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 14:53:14,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 02:53:14 BasicIcfg [2022-03-15 14:53:14,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 14:53:14,196 INFO L158 Benchmark]: Toolchain (without parser) took 887832.33ms. Allocated memory was 204.5MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 153.5MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 811.7MB. Max. memory is 8.0GB. [2022-03-15 14:53:14,196 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 204.5MB. Free memory was 169.8MB in the beginning and 169.7MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 14:53:14,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.77ms. Allocated memory is still 204.5MB. Free memory was 153.3MB in the beginning and 180.6MB in the end (delta: -27.2MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2022-03-15 14:53:14,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.19ms. Allocated memory is still 204.5MB. Free memory was 180.6MB in the beginning and 179.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 14:53:14,196 INFO L158 Benchmark]: Boogie Preprocessor took 23.21ms. Allocated memory is still 204.5MB. Free memory was 179.0MB in the beginning and 177.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 14:53:14,196 INFO L158 Benchmark]: RCFGBuilder took 293.64ms. Allocated memory is still 204.5MB. Free memory was 177.4MB in the beginning and 165.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-15 14:53:14,196 INFO L158 Benchmark]: TraceAbstraction took 887302.80ms. Allocated memory was 204.5MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 165.4MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 822.0MB. Max. memory is 8.0GB. [2022-03-15 14:53:14,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 204.5MB. Free memory was 169.8MB in the beginning and 169.7MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.77ms. Allocated memory is still 204.5MB. Free memory was 153.3MB in the beginning and 180.6MB in the end (delta: -27.2MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.19ms. Allocated memory is still 204.5MB. Free memory was 180.6MB in the beginning and 179.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.21ms. Allocated memory is still 204.5MB. Free memory was 179.0MB in the beginning and 177.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 293.64ms. Allocated memory is still 204.5MB. Free memory was 177.4MB in the beginning and 165.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 887302.80ms. Allocated memory was 204.5MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 165.4MB in the beginning and 2.1GB in the end (delta: -1.9GB). Peak memory consumption was 822.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 2ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 2ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 79 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 2ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 887.2s, OverallIterations: 254, TraceHistogramMax: 2, PathProgramHistogramMax: 221, EmptinessCheckTime: 3.0s, AutomataDifference: 588.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150980 SdHoareTripleChecker+Valid, 106.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 150980 mSDsluCounter, 704383 SdHoareTripleChecker+Invalid, 90.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 691915 mSDsCounter, 24442 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 353262 IncrementalHoareTripleChecker+Invalid, 377704 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24442 mSolverCounterUnsat, 40625 mSDtfsCounter, 353262 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54309 GetRequests, 27106 SyntacticMatches, 855 SemanticMatches, 26348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329317 ImplicationChecksByTransitivity, 520.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17446occurred in iteration=251, InterpolantAutomatonStates: 21601, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 41.3s AutomataMinimizationTime, 253 MinimizatonAttempts, 845397 StatesRemovedByMinimization, 252 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 175.9s InterpolantComputationTime, 34078 NumberOfCodeBlocks, 34051 NumberOfCodeBlocksAsserted, 742 NumberOfCheckSat, 49170 ConstructedInterpolants, 0 QuantifiedInterpolants, 302132 SizeOfPredicates, 2372 NumberOfNonLiveVariables, 35166 ConjunctsInSsa, 4552 ConjunctsInUnsatCore, 690 InterpolantComputations, 36 PerfectInterpolantSequences, 335/3546 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown