/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/popl20-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:39:19,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:39:19,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:39:19,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:39:19,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:39:19,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:39:19,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:39:19,980 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 [2022-03-03 17:39:19,999 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:39:20,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:39:20,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:39:20,000 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:39:20,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:39:20,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:39:20,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:39:20,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:39:20,001 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:39:20,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:39:20,001 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:39:20,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:39:20,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:39:20,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:39:20,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:39:20,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:39:20,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:39:20,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:39:20,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:39:20,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:39:20,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:39:20,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:39:20,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:39:20,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:39:20,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:39:20,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:39:20,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:39:20,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:39:20,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:39:20,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:39:20,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:39:20,003 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:39:20,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:39:20,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:39:20,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:39:20,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:39:20,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:39:20,160 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:39:20,170 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:39:20,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-03-03 17:39:20,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c57ca56/cc2c38d43d3d46b2a5c4cb7cf64f59f2/FLAG381db5c97 [2022-03-03 17:39:20,599 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:39:20,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-03-03 17:39:20,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c57ca56/cc2c38d43d3d46b2a5c4cb7cf64f59f2/FLAG381db5c97 [2022-03-03 17:39:21,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c57ca56/cc2c38d43d3d46b2a5c4cb7cf64f59f2 [2022-03-03 17:39:21,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:39:21,042 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:39:21,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:39:21,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:39:21,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:39:21,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610f12a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21, skipping insertion in model container [2022-03-03 17:39:21,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:39:21,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:39:21,266 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/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-03-03 17:39:21,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:39:21,273 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:39:21,290 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/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-03-03 17:39:21,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:39:21,299 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:39:21,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21 WrapperNode [2022-03-03 17:39:21,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:39:21,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:39:21,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:39:21,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:39:21,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,321 INFO L137 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2022-03-03 17:39:21,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:39:21,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:39:21,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:39:21,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:39:21,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:39:21,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:39:21,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:39:21,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:39:21,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21" (1/1) ... [2022-03-03 17:39:21,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:39:21,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:21,382 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) [2022-03-03 17:39:21,386 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 [2022-03-03 17:39:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:39:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:39:21,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:39:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:39:21,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:39:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-03 17:39:21,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-03 17:39:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-03 17:39:21,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-03 17:39:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:39:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:39:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:39:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:39:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:39:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:39:21,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:39:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:39:21,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:39:21,426 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:39:21,497 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:39:21,498 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:39:21,655 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:39:21,723 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:39:21,724 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-03 17:39:21,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:39:21 BoogieIcfgContainer [2022-03-03 17:39:21,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:39:21,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:39:21,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:39:21,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:39:21,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:39:21" (1/3) ... [2022-03-03 17:39:21,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676bc60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:39:21, skipping insertion in model container [2022-03-03 17:39:21,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:39:21" (2/3) ... [2022-03-03 17:39:21,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676bc60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:39:21, skipping insertion in model container [2022-03-03 17:39:21,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:39:21" (3/3) ... [2022-03-03 17:39:21,730 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-03-03 17:39:21,733 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:39:21,733 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:39:21,733 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:39:21,733 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:39:21,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,772 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,772 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,772 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,772 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,774 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,774 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,774 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,774 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,775 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,775 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,775 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,775 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,776 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,776 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,776 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,776 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,776 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,776 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,776 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,776 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,777 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,777 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,777 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,777 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,779 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,779 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,779 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,779 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,781 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,781 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,781 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,781 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,781 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,782 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:39:21,787 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-03 17:39:21,824 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:39:21,828 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 [2022-03-03 17:39:21,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-03 17:39:21,836 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 134 places, 131 transitions, 294 flow [2022-03-03 17:39:22,026 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:22,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-03 17:39:22,075 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:22,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:22,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:22,083 INFO L85 PathProgramCache]: Analyzing trace with hash 621740972, now seen corresponding path program 1 times [2022-03-03 17:39:22,089 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:22,089 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329663231] [2022-03-03 17:39:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:22,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:22,284 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:22,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329663231] [2022-03-03 17:39:22,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329663231] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:39:22,285 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:39:22,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:39:22,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896984899] [2022-03-03 17:39:22,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:39:22,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:39:22,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:22,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:39:22,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:39:22,340 INFO L87 Difference]: Start difference. First operand has 3953 states, 3952 states have (on average 5.05414979757085) internal successors, (19974), 3952 states have internal predecessors, (19974), 0 states have call successors, (0), 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 49.0) internal successors, (98), 2 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) [2022-03-03 17:39:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:22,427 INFO L93 Difference]: Finished difference Result 3953 states and 17198 transitions. [2022-03-03 17:39:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:39:22,429 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 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 98 [2022-03-03 17:39:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:22,472 INFO L225 Difference]: With dead ends: 3953 [2022-03-03 17:39:22,472 INFO L226 Difference]: Without dead ends: 3951 [2022-03-03 17:39:22,474 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 [2022-03-03 17:39:22,477 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:22,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:39:22,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2022-03-03 17:39:22,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2022-03-03 17:39:22,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 4.353417721518987) internal successors, (17196), 3950 states have internal predecessors, (17196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 17196 transitions. [2022-03-03 17:39:22,703 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 17196 transitions. Word has length 98 [2022-03-03 17:39:22,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:22,704 INFO L470 AbstractCegarLoop]: Abstraction has 3951 states and 17196 transitions. [2022-03-03 17:39:22,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 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) [2022-03-03 17:39:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 17196 transitions. [2022-03-03 17:39:22,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-03 17:39:22,718 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:22,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:22,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:39:22,719 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1371881006, now seen corresponding path program 1 times [2022-03-03 17:39:22,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:22,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721300154] [2022-03-03 17:39:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:22,982 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:22,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721300154] [2022-03-03 17:39:22,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721300154] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:39:22,982 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:39:22,982 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:39:22,982 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529613503] [2022-03-03 17:39:22,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:39:22,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:39:22,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:39:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:39:22,984 INFO L87 Difference]: Start difference. First operand 3951 states and 17196 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 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) [2022-03-03 17:39:23,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:23,121 INFO L93 Difference]: Finished difference Result 7852 states and 32994 transitions. [2022-03-03 17:39:23,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:39:23,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 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 98 [2022-03-03 17:39:23,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:23,165 INFO L225 Difference]: With dead ends: 7852 [2022-03-03 17:39:23,165 INFO L226 Difference]: Without dead ends: 6391 [2022-03-03 17:39:23,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:39:23,168 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 8 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:23,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 328 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:39:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2022-03-03 17:39:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 6031. [2022-03-03 17:39:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6031 states, 6030 states have (on average 4.253233830845772) internal successors, (25647), 6030 states have internal predecessors, (25647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6031 states to 6031 states and 25647 transitions. [2022-03-03 17:39:23,439 INFO L78 Accepts]: Start accepts. Automaton has 6031 states and 25647 transitions. Word has length 98 [2022-03-03 17:39:23,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:23,441 INFO L470 AbstractCegarLoop]: Abstraction has 6031 states and 25647 transitions. [2022-03-03 17:39:23,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 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) [2022-03-03 17:39:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 6031 states and 25647 transitions. [2022-03-03 17:39:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 17:39:23,459 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:23,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:23,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:39:23,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:23,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:23,461 INFO L85 PathProgramCache]: Analyzing trace with hash -330592620, now seen corresponding path program 1 times [2022-03-03 17:39:23,461 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:23,461 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916091781] [2022-03-03 17:39:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:23,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:23,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:23,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916091781] [2022-03-03 17:39:23,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916091781] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:39:23,769 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:39:23,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:39:23,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710580605] [2022-03-03 17:39:23,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:39:23,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:39:23,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:23,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:39:23,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:39:23,771 INFO L87 Difference]: Start difference. First operand 6031 states and 25647 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:24,065 INFO L93 Difference]: Finished difference Result 12359 states and 52502 transitions. [2022-03-03 17:39:24,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:39:24,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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 100 [2022-03-03 17:39:24,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:24,126 INFO L225 Difference]: With dead ends: 12359 [2022-03-03 17:39:24,127 INFO L226 Difference]: Without dead ends: 11771 [2022-03-03 17:39:24,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:39:24,133 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 358 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:24,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 589 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:39:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11771 states. [2022-03-03 17:39:24,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11771 to 5443. [2022-03-03 17:39:24,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5443 states, 5442 states have (on average 4.299889746416759) internal successors, (23400), 5442 states have internal predecessors, (23400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5443 states to 5443 states and 23400 transitions. [2022-03-03 17:39:24,439 INFO L78 Accepts]: Start accepts. Automaton has 5443 states and 23400 transitions. Word has length 100 [2022-03-03 17:39:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:24,441 INFO L470 AbstractCegarLoop]: Abstraction has 5443 states and 23400 transitions. [2022-03-03 17:39:24,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 5443 states and 23400 transitions. [2022-03-03 17:39:24,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 17:39:24,459 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:24,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:24,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:39:24,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:24,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash -858528176, now seen corresponding path program 1 times [2022-03-03 17:39:24,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:24,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403014524] [2022-03-03 17:39:24,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:24,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:24,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:24,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403014524] [2022-03-03 17:39:24,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403014524] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:24,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680754565] [2022-03-03 17:39:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:24,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:24,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:24,729 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) [2022-03-03 17:39:24,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:39:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:24,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:39:24,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:25,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:25,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680754565] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:25,578 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:39:25,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 8] total 22 [2022-03-03 17:39:25,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179782575] [2022-03-03 17:39:25,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:39:25,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:39:25,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:25,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:39:25,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:39:25,580 INFO L87 Difference]: Start difference. First operand 5443 states and 23400 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:25,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:25,797 INFO L93 Difference]: Finished difference Result 13827 states and 58858 transitions. [2022-03-03 17:39:25,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:39:25,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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 100 [2022-03-03 17:39:25,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:25,856 INFO L225 Difference]: With dead ends: 13827 [2022-03-03 17:39:25,856 INFO L226 Difference]: Without dead ends: 13827 [2022-03-03 17:39:25,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:39:25,861 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 423 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:25,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 478 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:39:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13827 states. [2022-03-03 17:39:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13827 to 6328. [2022-03-03 17:39:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6328 states, 6327 states have (on average 4.34392287023866) internal successors, (27484), 6327 states have internal predecessors, (27484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6328 states to 6328 states and 27484 transitions. [2022-03-03 17:39:26,134 INFO L78 Accepts]: Start accepts. Automaton has 6328 states and 27484 transitions. Word has length 100 [2022-03-03 17:39:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:26,135 INFO L470 AbstractCegarLoop]: Abstraction has 6328 states and 27484 transitions. [2022-03-03 17:39:26,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 6328 states and 27484 transitions. [2022-03-03 17:39:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 17:39:26,156 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:26,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:26,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:26,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:26,387 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:26,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:26,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1176334216, now seen corresponding path program 2 times [2022-03-03 17:39:26,387 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:26,387 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124572419] [2022-03-03 17:39:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:26,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:26,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:26,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124572419] [2022-03-03 17:39:26,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124572419] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:39:26,578 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:39:26,578 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:39:26,578 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046888023] [2022-03-03 17:39:26,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:39:26,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:39:26,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:26,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:39:26,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:39:26,579 INFO L87 Difference]: Start difference. First operand 6328 states and 27484 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:26,844 INFO L93 Difference]: Finished difference Result 13356 states and 58883 transitions. [2022-03-03 17:39:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:39:26,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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 100 [2022-03-03 17:39:26,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:26,899 INFO L225 Difference]: With dead ends: 13356 [2022-03-03 17:39:26,900 INFO L226 Difference]: Without dead ends: 13176 [2022-03-03 17:39:26,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 17:39:26,900 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 285 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:26,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 531 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:39:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13176 states. [2022-03-03 17:39:27,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13176 to 6718. [2022-03-03 17:39:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6718 states, 6717 states have (on average 4.3897573321423256) internal successors, (29486), 6717 states have internal predecessors, (29486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 29486 transitions. [2022-03-03 17:39:27,135 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 29486 transitions. Word has length 100 [2022-03-03 17:39:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:27,135 INFO L470 AbstractCegarLoop]: Abstraction has 6718 states and 29486 transitions. [2022-03-03 17:39:27,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 29486 transitions. [2022-03-03 17:39:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 17:39:27,152 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:27,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:27,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 17:39:27,152 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1016067836, now seen corresponding path program 3 times [2022-03-03 17:39:27,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:27,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079182893] [2022-03-03 17:39:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:27,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:27,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:27,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079182893] [2022-03-03 17:39:27,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079182893] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:39:27,272 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:39:27,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:39:27,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673235990] [2022-03-03 17:39:27,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:39:27,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:39:27,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:27,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:39:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:39:27,273 INFO L87 Difference]: Start difference. First operand 6718 states and 29486 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:27,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:27,479 INFO L93 Difference]: Finished difference Result 12636 states and 55639 transitions. [2022-03-03 17:39:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:39:27,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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 100 [2022-03-03 17:39:27,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:27,521 INFO L225 Difference]: With dead ends: 12636 [2022-03-03 17:39:27,521 INFO L226 Difference]: Without dead ends: 12636 [2022-03-03 17:39:27,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:39:27,523 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 336 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:27,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 494 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:39:27,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12636 states. [2022-03-03 17:39:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12636 to 6898. [2022-03-03 17:39:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6898 states, 6897 states have (on average 4.379585326953748) internal successors, (30206), 6897 states have internal predecessors, (30206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6898 states to 6898 states and 30206 transitions. [2022-03-03 17:39:27,823 INFO L78 Accepts]: Start accepts. Automaton has 6898 states and 30206 transitions. Word has length 100 [2022-03-03 17:39:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:27,824 INFO L470 AbstractCegarLoop]: Abstraction has 6898 states and 30206 transitions. [2022-03-03 17:39:27,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:27,825 INFO L276 IsEmpty]: Start isEmpty. Operand 6898 states and 30206 transitions. [2022-03-03 17:39:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 17:39:27,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:27,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:27,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 17:39:27,842 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:27,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:27,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1053585950, now seen corresponding path program 4 times [2022-03-03 17:39:27,843 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:27,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521035193] [2022-03-03 17:39:27,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:27,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:28,017 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:28,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521035193] [2022-03-03 17:39:28,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521035193] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:28,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946352229] [2022-03-03 17:39:28,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:39:28,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:28,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:28,019 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) [2022-03-03 17:39:28,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:39:28,084 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:39:28,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:28,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:39:28,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:28,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-03 17:39:28,378 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946352229] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:39:28,378 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-03 17:39:28,378 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-03-03 17:39:28,378 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446442416] [2022-03-03 17:39:28,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:39:28,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:39:28,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:28,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:39:28,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-03-03 17:39:28,379 INFO L87 Difference]: Start difference. First operand 6898 states and 30206 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:28,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:28,598 INFO L93 Difference]: Finished difference Result 10234 states and 44384 transitions. [2022-03-03 17:39:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:39:28,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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 100 [2022-03-03 17:39:28,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:28,628 INFO L225 Difference]: With dead ends: 10234 [2022-03-03 17:39:28,629 INFO L226 Difference]: Without dead ends: 10108 [2022-03-03 17:39:28,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:39:28,629 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 285 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:28,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 401 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:39:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10108 states. [2022-03-03 17:39:28,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10108 to 6754. [2022-03-03 17:39:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6754 states, 6753 states have (on average 4.391233525840367) internal successors, (29654), 6753 states have internal predecessors, (29654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:28,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6754 states to 6754 states and 29654 transitions. [2022-03-03 17:39:28,789 INFO L78 Accepts]: Start accepts. Automaton has 6754 states and 29654 transitions. Word has length 100 [2022-03-03 17:39:28,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:28,789 INFO L470 AbstractCegarLoop]: Abstraction has 6754 states and 29654 transitions. [2022-03-03 17:39:28,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:28,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6754 states and 29654 transitions. [2022-03-03 17:39:28,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-03-03 17:39:28,806 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:28,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:28,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:29,019 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,SelfDestructingSolverStorable6 [2022-03-03 17:39:29,020 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1097611240, now seen corresponding path program 2 times [2022-03-03 17:39:29,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:29,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771965711] [2022-03-03 17:39:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:29,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:29,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771965711] [2022-03-03 17:39:29,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771965711] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:29,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857184080] [2022-03-03 17:39:29,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:39:29,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:29,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:29,124 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) [2022-03-03 17:39:29,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:39:29,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:39:29,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:29,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:39:29,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:29,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:29,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857184080] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:29,680 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:39:29,680 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 20 [2022-03-03 17:39:29,680 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621924271] [2022-03-03 17:39:29,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:39:29,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:39:29,681 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:29,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:39:29,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2022-03-03 17:39:29,681 INFO L87 Difference]: Start difference. First operand 6754 states and 29654 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:29,849 INFO L93 Difference]: Finished difference Result 9729 states and 41658 transitions. [2022-03-03 17:39:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:39:29,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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 100 [2022-03-03 17:39:29,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:29,875 INFO L225 Difference]: With dead ends: 9729 [2022-03-03 17:39:29,876 INFO L226 Difference]: Without dead ends: 9033 [2022-03-03 17:39:29,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:39:29,876 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 308 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:29,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 578 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:39:29,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9033 states. [2022-03-03 17:39:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9033 to 6222. [2022-03-03 17:39:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6222 states, 6221 states have (on average 4.355409098215721) internal successors, (27095), 6221 states have internal predecessors, (27095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:30,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 27095 transitions. [2022-03-03 17:39:30,024 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 27095 transitions. Word has length 100 [2022-03-03 17:39:30,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:30,024 INFO L470 AbstractCegarLoop]: Abstraction has 6222 states and 27095 transitions. [2022-03-03 17:39:30,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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) [2022-03-03 17:39:30,025 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 27095 transitions. [2022-03-03 17:39:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-03 17:39:30,042 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:30,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:30,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-03 17:39:30,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:30,259 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:30,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:30,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1717384526, now seen corresponding path program 1 times [2022-03-03 17:39:30,259 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:30,259 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508042391] [2022-03-03 17:39:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:30,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:30,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:30,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508042391] [2022-03-03 17:39:30,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508042391] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:30,470 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265806031] [2022-03-03 17:39:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:30,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:30,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:30,471 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) [2022-03-03 17:39:30,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:39:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:30,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:39:30,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:30,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:39:30,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265806031] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:30,920 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:30,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2022-03-03 17:39:30,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869537075] [2022-03-03 17:39:30,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:30,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-03 17:39:30,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:30,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-03 17:39:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-03 17:39:30,922 INFO L87 Difference]: Start difference. First operand 6222 states and 27095 transitions. Second operand has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:31,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:31,473 INFO L93 Difference]: Finished difference Result 32471 states and 138800 transitions. [2022-03-03 17:39:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 17:39:31,474 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 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 102 [2022-03-03 17:39:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:31,584 INFO L225 Difference]: With dead ends: 32471 [2022-03-03 17:39:31,584 INFO L226 Difference]: Without dead ends: 27653 [2022-03-03 17:39:31,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 197 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:39:31,585 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 450 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:31,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 1306 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:39:31,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27653 states. [2022-03-03 17:39:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27653 to 14070. [2022-03-03 17:39:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14070 states, 14069 states have (on average 4.408771056933684) internal successors, (62027), 14069 states have internal predecessors, (62027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14070 states to 14070 states and 62027 transitions. [2022-03-03 17:39:32,118 INFO L78 Accepts]: Start accepts. Automaton has 14070 states and 62027 transitions. Word has length 102 [2022-03-03 17:39:32,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:32,118 INFO L470 AbstractCegarLoop]: Abstraction has 14070 states and 62027 transitions. [2022-03-03 17:39:32,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 14070 states and 62027 transitions. [2022-03-03 17:39:32,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-03 17:39:32,154 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:32,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:32,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-03 17:39:32,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:32,371 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:32,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:32,372 INFO L85 PathProgramCache]: Analyzing trace with hash 631182096, now seen corresponding path program 1 times [2022-03-03 17:39:32,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:32,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748693615] [2022-03-03 17:39:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:32,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:32,596 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:32,596 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748693615] [2022-03-03 17:39:32,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748693615] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:32,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942378330] [2022-03-03 17:39:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:32,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:32,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:32,598 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) [2022-03-03 17:39:32,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:39:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:32,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:39:32,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:33,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:33,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942378330] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:33,255 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-03 17:39:33,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 8] total 22 [2022-03-03 17:39:33,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462598195] [2022-03-03 17:39:33,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:39:33,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:39:33,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:33,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:39:33,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-03-03 17:39:33,257 INFO L87 Difference]: Start difference. First operand 14070 states and 62027 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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) [2022-03-03 17:39:33,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:33,548 INFO L93 Difference]: Finished difference Result 21487 states and 94543 transitions. [2022-03-03 17:39:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 17:39:33,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 104 [2022-03-03 17:39:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:33,625 INFO L225 Difference]: With dead ends: 21487 [2022-03-03 17:39:33,625 INFO L226 Difference]: Without dead ends: 21079 [2022-03-03 17:39:33,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:39:33,626 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 478 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:33,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 380 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:39:33,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21079 states. [2022-03-03 17:39:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21079 to 14307. [2022-03-03 17:39:33,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14307 states, 14306 states have (on average 4.47134069621138) internal successors, (63967), 14306 states have internal predecessors, (63967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14307 states to 14307 states and 63967 transitions. [2022-03-03 17:39:34,047 INFO L78 Accepts]: Start accepts. Automaton has 14307 states and 63967 transitions. Word has length 104 [2022-03-03 17:39:34,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:34,047 INFO L470 AbstractCegarLoop]: Abstraction has 14307 states and 63967 transitions. [2022-03-03 17:39:34,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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) [2022-03-03 17:39:34,048 INFO L276 IsEmpty]: Start isEmpty. Operand 14307 states and 63967 transitions. [2022-03-03 17:39:34,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-03-03 17:39:34,079 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:34,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:34,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:34,295 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,SelfDestructingSolverStorable9 [2022-03-03 17:39:34,296 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:34,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash -317761718, now seen corresponding path program 1 times [2022-03-03 17:39:34,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:34,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834899319] [2022-03-03 17:39:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:34,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:34,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:34,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834899319] [2022-03-03 17:39:34,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834899319] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:34,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138788029] [2022-03-03 17:39:34,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:34,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:34,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:34,378 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) [2022-03-03 17:39:34,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:39:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:34,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-03 17:39:34,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:34,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:34,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138788029] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:34,922 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:34,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-03-03 17:39:34,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591055144] [2022-03-03 17:39:34,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:34,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:39:34,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:39:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:39:34,923 INFO L87 Difference]: Start difference. First operand 14307 states and 63967 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 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) [2022-03-03 17:39:35,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:35,308 INFO L93 Difference]: Finished difference Result 35327 states and 155976 transitions. [2022-03-03 17:39:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:39:35,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 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 106 [2022-03-03 17:39:35,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:35,431 INFO L225 Difference]: With dead ends: 35327 [2022-03-03 17:39:35,431 INFO L226 Difference]: Without dead ends: 31967 [2022-03-03 17:39:35,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 209 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:39:35,431 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 114 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:35,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 913 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:39:35,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31967 states. [2022-03-03 17:39:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31967 to 19638. [2022-03-03 17:39:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19638 states, 19637 states have (on average 4.502979070122728) internal successors, (88425), 19637 states have internal predecessors, (88425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19638 states to 19638 states and 88425 transitions. [2022-03-03 17:39:36,022 INFO L78 Accepts]: Start accepts. Automaton has 19638 states and 88425 transitions. Word has length 106 [2022-03-03 17:39:36,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:36,022 INFO L470 AbstractCegarLoop]: Abstraction has 19638 states and 88425 transitions. [2022-03-03 17:39:36,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 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) [2022-03-03 17:39:36,022 INFO L276 IsEmpty]: Start isEmpty. Operand 19638 states and 88425 transitions. [2022-03-03 17:39:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-03 17:39:36,078 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:36,078 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:36,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-03 17:39:36,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:36,283 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:36,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:36,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1065446786, now seen corresponding path program 2 times [2022-03-03 17:39:36,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:36,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709367479] [2022-03-03 17:39:36,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:36,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:36,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:36,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709367479] [2022-03-03 17:39:36,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709367479] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:36,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518909180] [2022-03-03 17:39:36,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:39:36,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:36,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:36,499 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) [2022-03-03 17:39:36,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:39:36,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:39:36,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:36,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:39:36,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:37,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:37,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518909180] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:37,451 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:37,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-03-03 17:39:37,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088333036] [2022-03-03 17:39:37,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:37,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:39:37,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:37,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:39:37,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:39:37,452 INFO L87 Difference]: Start difference. First operand 19638 states and 88425 transitions. Second operand has 26 states, 26 states have (on average 10.076923076923077) internal successors, (262), 26 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:40,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:40,050 INFO L93 Difference]: Finished difference Result 80366 states and 358545 transitions. [2022-03-03 17:39:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 17:39:40,050 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.076923076923077) internal successors, (262), 26 states have internal predecessors, (262), 0 states have call successors, (0), 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 108 [2022-03-03 17:39:40,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:40,815 INFO L225 Difference]: With dead ends: 80366 [2022-03-03 17:39:40,815 INFO L226 Difference]: Without dead ends: 74822 [2022-03-03 17:39:40,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2108 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1297, Invalid=5345, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 17:39:40,817 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2031 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2031 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:40,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2031 Valid, 2565 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:39:40,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74822 states. [2022-03-03 17:39:42,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74822 to 37534. [2022-03-03 17:39:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37534 states, 37533 states have (on average 4.614419311006315) internal successors, (173193), 37533 states have internal predecessors, (173193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37534 states to 37534 states and 173193 transitions. [2022-03-03 17:39:42,799 INFO L78 Accepts]: Start accepts. Automaton has 37534 states and 173193 transitions. Word has length 108 [2022-03-03 17:39:42,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:42,799 INFO L470 AbstractCegarLoop]: Abstraction has 37534 states and 173193 transitions. [2022-03-03 17:39:42,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.076923076923077) internal successors, (262), 26 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:42,800 INFO L276 IsEmpty]: Start isEmpty. Operand 37534 states and 173193 transitions. [2022-03-03 17:39:43,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-03 17:39:43,050 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:43,050 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:43,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:39:43,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:43,269 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:43,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash -492042434, now seen corresponding path program 3 times [2022-03-03 17:39:43,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:43,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571059738] [2022-03-03 17:39:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:43,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:39:43,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:43,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571059738] [2022-03-03 17:39:43,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571059738] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:43,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020182577] [2022-03-03 17:39:43,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:39:43,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:43,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:43,433 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) [2022-03-03 17:39:43,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:39:43,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:39:43,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:43,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:39:43,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:43,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:44,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020182577] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:44,223 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:44,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-03-03 17:39:44,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296533965] [2022-03-03 17:39:44,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:44,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:39:44,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:44,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:39:44,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:39:44,225 INFO L87 Difference]: Start difference. First operand 37534 states and 173193 transitions. Second operand has 25 states, 25 states have (on average 9.96) internal successors, (249), 25 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:39:47,732 INFO L93 Difference]: Finished difference Result 176095 states and 790765 transitions. [2022-03-03 17:39:47,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 17:39:47,733 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.96) internal successors, (249), 25 states have internal predecessors, (249), 0 states have call successors, (0), 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 108 [2022-03-03 17:39:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:39:49,210 INFO L225 Difference]: With dead ends: 176095 [2022-03-03 17:39:49,210 INFO L226 Difference]: Without dead ends: 172120 [2022-03-03 17:39:49,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2457 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1375, Invalid=6281, Unknown=0, NotChecked=0, Total=7656 [2022-03-03 17:39:49,214 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 2726 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2726 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:39:49,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2726 Valid, 2466 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:39:49,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172120 states. [2022-03-03 17:39:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172120 to 73084. [2022-03-03 17:39:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73084 states, 73083 states have (on average 4.775187116018773) internal successors, (348985), 73083 states have internal predecessors, (348985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73084 states to 73084 states and 348985 transitions. [2022-03-03 17:39:53,647 INFO L78 Accepts]: Start accepts. Automaton has 73084 states and 348985 transitions. Word has length 108 [2022-03-03 17:39:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:39:53,647 INFO L470 AbstractCegarLoop]: Abstraction has 73084 states and 348985 transitions. [2022-03-03 17:39:53,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.96) internal successors, (249), 25 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:39:53,647 INFO L276 IsEmpty]: Start isEmpty. Operand 73084 states and 348985 transitions. [2022-03-03 17:39:53,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-03 17:39:53,875 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:39:53,875 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:39:53,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-03 17:39:54,091 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,SelfDestructingSolverStorable12 [2022-03-03 17:39:54,092 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:39:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:39:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1960919418, now seen corresponding path program 4 times [2022-03-03 17:39:54,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:39:54,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670742043] [2022-03-03 17:39:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:39:54,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:39:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:39:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:39:54,230 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:39:54,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670742043] [2022-03-03 17:39:54,230 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670742043] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:39:54,230 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969467167] [2022-03-03 17:39:54,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:39:54,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:39:54,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:39:54,244 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) [2022-03-03 17:39:54,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:39:54,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:39:54,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:39:54,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:39:54,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:39:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:39:55,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:39:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:39:55,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969467167] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:39:55,326 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:39:55,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-03-03 17:39:55,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424152253] [2022-03-03 17:39:55,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:39:55,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:39:55,327 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:39:55,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:39:55,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:39:55,328 INFO L87 Difference]: Start difference. First operand 73084 states and 348985 transitions. Second operand has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:00,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:00,115 INFO L93 Difference]: Finished difference Result 272858 states and 1263072 transitions. [2022-03-03 17:40:00,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-03 17:40:00,115 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 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 108 [2022-03-03 17:40:00,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:02,276 INFO L225 Difference]: With dead ends: 272858 [2022-03-03 17:40:02,277 INFO L226 Difference]: Without dead ends: 269255 [2022-03-03 17:40:02,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2352 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1299, Invalid=6011, Unknown=0, NotChecked=0, Total=7310 [2022-03-03 17:40:02,278 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 2269 mSDsluCounter, 3127 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:02,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2269 Valid, 2907 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:40:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269255 states. [2022-03-03 17:40:08,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269255 to 92766. [2022-03-03 17:40:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92766 states, 92765 states have (on average 4.91864388508597) internal successors, (456278), 92765 states have internal predecessors, (456278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:09,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92766 states to 92766 states and 456278 transitions. [2022-03-03 17:40:09,521 INFO L78 Accepts]: Start accepts. Automaton has 92766 states and 456278 transitions. Word has length 108 [2022-03-03 17:40:09,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:09,521 INFO L470 AbstractCegarLoop]: Abstraction has 92766 states and 456278 transitions. [2022-03-03 17:40:09,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:09,522 INFO L276 IsEmpty]: Start isEmpty. Operand 92766 states and 456278 transitions. [2022-03-03 17:40:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-03 17:40:10,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:10,282 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:10,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-03 17:40:10,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-03 17:40:10,495 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:40:10,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash -879637440, now seen corresponding path program 5 times [2022-03-03 17:40:10,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:10,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057568856] [2022-03-03 17:40:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:40:10,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:10,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057568856] [2022-03-03 17:40:10,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057568856] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:10,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950927789] [2022-03-03 17:40:10,670 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:40:10,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:10,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:10,671 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) [2022-03-03 17:40:10,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:40:10,756 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 17:40:10,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:10,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:40:10,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:40:11,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:40:11,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950927789] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:11,499 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:11,499 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2022-03-03 17:40:11,499 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678963126] [2022-03-03 17:40:11,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:11,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:40:11,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:40:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:40:11,501 INFO L87 Difference]: Start difference. First operand 92766 states and 456278 transitions. Second operand has 26 states, 26 states have (on average 9.692307692307692) internal successors, (252), 26 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:14,204 INFO L93 Difference]: Finished difference Result 184452 states and 904949 transitions. [2022-03-03 17:40:14,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:40:14,204 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.692307692307692) internal successors, (252), 26 states have internal predecessors, (252), 0 states have call successors, (0), 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 108 [2022-03-03 17:40:14,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:15,600 INFO L225 Difference]: With dead ends: 184452 [2022-03-03 17:40:15,602 INFO L226 Difference]: Without dead ends: 182592 [2022-03-03 17:40:15,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=384, Invalid=1256, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 17:40:15,605 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 1161 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:15,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 1278 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-03 17:40:15,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182592 states. [2022-03-03 17:40:20,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182592 to 128200. [2022-03-03 17:40:20,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128200 states, 128199 states have (on average 5.066045756987184) internal successors, (649462), 128199 states have internal predecessors, (649462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128200 states to 128200 states and 649462 transitions. [2022-03-03 17:40:22,307 INFO L78 Accepts]: Start accepts. Automaton has 128200 states and 649462 transitions. Word has length 108 [2022-03-03 17:40:22,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:22,307 INFO L470 AbstractCegarLoop]: Abstraction has 128200 states and 649462 transitions. [2022-03-03 17:40:22,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.692307692307692) internal successors, (252), 26 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:22,307 INFO L276 IsEmpty]: Start isEmpty. Operand 128200 states and 649462 transitions. [2022-03-03 17:40:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-03 17:40:22,938 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:22,939 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:22,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:23,154 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,SelfDestructingSolverStorable14 [2022-03-03 17:40:23,155 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:40:23,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:23,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1039903820, now seen corresponding path program 6 times [2022-03-03 17:40:23,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:23,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385077807] [2022-03-03 17:40:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:23,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:40:23,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:23,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385077807] [2022-03-03 17:40:23,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385077807] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:23,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539707379] [2022-03-03 17:40:23,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:40:23,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:23,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:23,780 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) [2022-03-03 17:40:23,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:40:23,887 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:40:23,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:23,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:40:23,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:40:24,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:40:24,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539707379] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:24,956 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:24,956 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2022-03-03 17:40:24,956 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111287166] [2022-03-03 17:40:24,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:24,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 17:40:24,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:24,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 17:40:24,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-03-03 17:40:24,958 INFO L87 Difference]: Start difference. First operand 128200 states and 649462 transitions. Second operand has 27 states, 27 states have (on average 9.555555555555555) internal successors, (258), 27 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:29,806 INFO L93 Difference]: Finished difference Result 230717 states and 1098706 transitions. [2022-03-03 17:40:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-03 17:40:29,807 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.555555555555555) internal successors, (258), 27 states have internal predecessors, (258), 0 states have call successors, (0), 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 108 [2022-03-03 17:40:29,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:32,589 INFO L225 Difference]: With dead ends: 230717 [2022-03-03 17:40:32,589 INFO L226 Difference]: Without dead ends: 227879 [2022-03-03 17:40:32,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2434 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1329, Invalid=5981, Unknown=0, NotChecked=0, Total=7310 [2022-03-03 17:40:32,591 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 2126 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:32,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2126 Valid, 2267 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-03 17:40:32,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227879 states. [2022-03-03 17:40:38,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227879 to 124248. [2022-03-03 17:40:38,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124248 states, 124247 states have (on average 4.9770940143423985) internal successors, (618389), 124247 states have internal predecessors, (618389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:39,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124248 states to 124248 states and 618389 transitions. [2022-03-03 17:40:39,872 INFO L78 Accepts]: Start accepts. Automaton has 124248 states and 618389 transitions. Word has length 108 [2022-03-03 17:40:39,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:39,872 INFO L470 AbstractCegarLoop]: Abstraction has 124248 states and 618389 transitions. [2022-03-03 17:40:39,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.555555555555555) internal successors, (258), 27 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 124248 states and 618389 transitions. [2022-03-03 17:40:40,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-03 17:40:40,650 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:40,650 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:40,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:40,859 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,SelfDestructingSolverStorable15 [2022-03-03 17:40:40,875 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:40:40,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:40,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1766060490, now seen corresponding path program 7 times [2022-03-03 17:40:40,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:40,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48200245] [2022-03-03 17:40:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:40,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:41,014 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:41,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48200245] [2022-03-03 17:40:41,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48200245] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:41,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485156097] [2022-03-03 17:40:41,014 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:40:41,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:41,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:41,015 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) [2022-03-03 17:40:41,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:40:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:41,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:40:41,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:41,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:41,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485156097] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:41,883 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:41,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-03-03 17:40:41,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794382986] [2022-03-03 17:40:41,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:41,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 17:40:41,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:41,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 17:40:41,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-03-03 17:40:41,885 INFO L87 Difference]: Start difference. First operand 124248 states and 618389 transitions. Second operand has 24 states, 24 states have (on average 9.833333333333334) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:40:45,018 INFO L93 Difference]: Finished difference Result 219464 states and 1058406 transitions. [2022-03-03 17:40:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:40:45,018 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.833333333333334) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 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 108 [2022-03-03 17:40:45,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:40:47,971 INFO L225 Difference]: With dead ends: 219464 [2022-03-03 17:40:47,971 INFO L226 Difference]: Without dead ends: 210206 [2022-03-03 17:40:47,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:40:47,973 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 1082 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:40:47,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 1823 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:40:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210206 states. [2022-03-03 17:40:54,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210206 to 151211. [2022-03-03 17:40:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151211 states, 151210 states have (on average 5.0551550823358244) internal successors, (764390), 151210 states have internal predecessors, (764390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151211 states to 151211 states and 764390 transitions. [2022-03-03 17:40:56,384 INFO L78 Accepts]: Start accepts. Automaton has 151211 states and 764390 transitions. Word has length 108 [2022-03-03 17:40:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:40:56,384 INFO L470 AbstractCegarLoop]: Abstraction has 151211 states and 764390 transitions. [2022-03-03 17:40:56,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.833333333333334) internal successors, (236), 24 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:40:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 151211 states and 764390 transitions. [2022-03-03 17:40:57,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-03 17:40:57,238 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:40:57,239 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:40:57,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:40:57,447 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,SelfDestructingSolverStorable16 [2022-03-03 17:40:57,448 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:40:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:40:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash 529963872, now seen corresponding path program 8 times [2022-03-03 17:40:57,448 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:40:57,448 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431007751] [2022-03-03 17:40:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:40:57,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:40:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:40:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:57,577 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:40:57,577 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431007751] [2022-03-03 17:40:57,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431007751] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:40:57,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800743978] [2022-03-03 17:40:57,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:40:57,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:40:57,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:40:57,583 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) [2022-03-03 17:40:57,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:40:57,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:40:57,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:40:57,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:40:57,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:40:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:58,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:40:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:40:58,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800743978] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:40:58,414 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:40:58,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-03-03 17:40:58,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513667026] [2022-03-03 17:40:58,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:40:58,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:40:58,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:40:58,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:40:58,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:40:58,415 INFO L87 Difference]: Start difference. First operand 151211 states and 764390 transitions. Second operand has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:04,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:04,701 INFO L93 Difference]: Finished difference Result 331061 states and 1593800 transitions. [2022-03-03 17:41:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-03-03 17:41:04,701 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 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 108 [2022-03-03 17:41:04,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:07,274 INFO L225 Difference]: With dead ends: 331061 [2022-03-03 17:41:07,275 INFO L226 Difference]: Without dead ends: 325793 [2022-03-03 17:41:07,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3745 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2009, Invalid=8703, Unknown=0, NotChecked=0, Total=10712 [2022-03-03 17:41:07,277 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 2289 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2289 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:07,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2289 Valid, 2267 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:41:08,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325793 states. [2022-03-03 17:41:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325793 to 155407. [2022-03-03 17:41:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155407 states, 155406 states have (on average 5.060345160418517) internal successors, (786408), 155406 states have internal predecessors, (786408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155407 states to 155407 states and 786408 transitions. [2022-03-03 17:41:18,602 INFO L78 Accepts]: Start accepts. Automaton has 155407 states and 786408 transitions. Word has length 108 [2022-03-03 17:41:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:18,604 INFO L470 AbstractCegarLoop]: Abstraction has 155407 states and 786408 transitions. [2022-03-03 17:41:18,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 155407 states and 786408 transitions. [2022-03-03 17:41:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-03 17:41:19,489 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:19,489 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:19,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:41:19,703 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,SelfDestructingSolverStorable17 [2022-03-03 17:41:19,703 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:41:19,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash 417768926, now seen corresponding path program 9 times [2022-03-03 17:41:19,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:19,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587562496] [2022-03-03 17:41:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:19,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:19,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:19,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587562496] [2022-03-03 17:41:19,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587562496] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:19,885 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462715623] [2022-03-03 17:41:19,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:41:19,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:19,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:19,896 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) [2022-03-03 17:41:19,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:41:20,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:41:20,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:20,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:41:20,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:41:20,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:41:20,876 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462715623] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:20,876 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:20,876 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-03-03 17:41:20,876 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538250488] [2022-03-03 17:41:20,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:20,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:41:20,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:20,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:41:20,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:41:20,877 INFO L87 Difference]: Start difference. First operand 155407 states and 786408 transitions. Second operand has 25 states, 25 states have (on average 10.12) internal successors, (253), 25 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:26,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:26,124 INFO L93 Difference]: Finished difference Result 275610 states and 1322903 transitions. [2022-03-03 17:41:26,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 17:41:26,124 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.12) internal successors, (253), 25 states have internal predecessors, (253), 0 states have call successors, (0), 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 108 [2022-03-03 17:41:26,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:28,263 INFO L225 Difference]: With dead ends: 275610 [2022-03-03 17:41:28,263 INFO L226 Difference]: Without dead ends: 264078 [2022-03-03 17:41:28,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1974 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1205, Invalid=5115, Unknown=0, NotChecked=0, Total=6320 [2022-03-03 17:41:28,265 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 1875 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:28,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1875 Valid, 2457 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-03 17:41:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264078 states. [2022-03-03 17:41:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264078 to 176905. [2022-03-03 17:41:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176905 states, 176904 states have (on average 5.06235020123909) internal successors, (895550), 176904 states have internal predecessors, (895550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:38,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176905 states to 176905 states and 895550 transitions. [2022-03-03 17:41:38,534 INFO L78 Accepts]: Start accepts. Automaton has 176905 states and 895550 transitions. Word has length 108 [2022-03-03 17:41:38,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:41:38,535 INFO L470 AbstractCegarLoop]: Abstraction has 176905 states and 895550 transitions. [2022-03-03 17:41:38,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.12) internal successors, (253), 25 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:38,535 INFO L276 IsEmpty]: Start isEmpty. Operand 176905 states and 895550 transitions. [2022-03-03 17:41:39,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-03 17:41:39,201 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:41:39,201 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:41:39,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-03 17:41:39,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:39,418 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:41:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:41:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash 960656736, now seen corresponding path program 10 times [2022-03-03 17:41:39,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:41:39,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329672552] [2022-03-03 17:41:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:41:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:41:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:41:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-03 17:41:39,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:41:39,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329672552] [2022-03-03 17:41:39,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329672552] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:41:39,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621632732] [2022-03-03 17:41:39,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:41:39,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:41:39,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:41:39,952 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) [2022-03-03 17:41:39,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:41:40,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:41:40,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:41:40,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:41:40,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:41:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:40,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:41:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:41:40,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621632732] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:41:40,441 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:41:40,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 15 [2022-03-03 17:41:40,441 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317963094] [2022-03-03 17:41:40,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:41:40,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 17:41:40,442 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:41:40,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 17:41:40,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-03-03 17:41:40,442 INFO L87 Difference]: Start difference. First operand 176905 states and 895550 transitions. Second operand has 15 states, 15 states have (on average 12.8) internal successors, (192), 15 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:41:46,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:41:46,695 INFO L93 Difference]: Finished difference Result 419566 states and 2055882 transitions. [2022-03-03 17:41:46,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 17:41:46,695 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.8) internal successors, (192), 15 states have internal predecessors, (192), 0 states have call successors, (0), 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 112 [2022-03-03 17:41:46,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:41:52,051 INFO L225 Difference]: With dead ends: 419566 [2022-03-03 17:41:52,075 INFO L226 Difference]: Without dead ends: 406027 [2022-03-03 17:41:52,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=431, Invalid=1825, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 17:41:52,089 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1293 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:41:52,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 1485 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:41:52,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406027 states. [2022-03-03 17:42:08,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406027 to 336339. [2022-03-03 17:42:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336339 states, 336338 states have (on average 5.071535181870618) internal successors, (1705750), 336338 states have internal predecessors, (1705750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:13,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336339 states to 336339 states and 1705750 transitions. [2022-03-03 17:42:13,089 INFO L78 Accepts]: Start accepts. Automaton has 336339 states and 1705750 transitions. Word has length 112 [2022-03-03 17:42:13,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:42:13,090 INFO L470 AbstractCegarLoop]: Abstraction has 336339 states and 1705750 transitions. [2022-03-03 17:42:13,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.8) internal successors, (192), 15 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:13,090 INFO L276 IsEmpty]: Start isEmpty. Operand 336339 states and 1705750 transitions. [2022-03-03 17:42:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-03 17:42:16,095 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:42:16,102 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:42:16,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:42:16,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:16,318 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-03 17:42:16,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:42:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash -122385034, now seen corresponding path program 11 times [2022-03-03 17:42:16,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:42:16,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776958671] [2022-03-03 17:42:16,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:42:16,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:42:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:42:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:42:16,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:42:16,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776958671] [2022-03-03 17:42:16,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776958671] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:42:16,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957802617] [2022-03-03 17:42:16,562 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:42:16,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:42:16,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:42:16,572 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) [2022-03-03 17:42:16,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:42:16,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:42:16,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:42:16,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:42:16,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:42:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 17:42:17,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:42:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-03 17:42:17,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957802617] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:42:17,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:42:17,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 32 [2022-03-03 17:42:17,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310552358] [2022-03-03 17:42:17,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:42:17,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-03 17:42:17,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:42:17,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-03 17:42:17,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-03-03 17:42:17,504 INFO L87 Difference]: Start difference. First operand 336339 states and 1705750 transitions. Second operand has 32 states, 32 states have (on average 8.8125) internal successors, (282), 32 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:42:44,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:42:44,535 INFO L93 Difference]: Finished difference Result 1365534 states and 6704193 transitions. [2022-03-03 17:42:44,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-03-03 17:42:44,535 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.8125) internal successors, (282), 32 states have internal predecessors, (282), 0 states have call successors, (0), 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 112 [2022-03-03 17:42:44,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted.