/usr/bin/java -Xmx16000000000 -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-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 02:36:13,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 02:36:13,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 02:36:13,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 02:36:13,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 02:36:13,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 02:36:13,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 02:36:13,444 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 [2022-01-18 02:36:13,466 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 02:36:13,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 02:36:13,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 02:36:13,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 02:36:13,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 02:36:13,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 02:36:13,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 02:36:13,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 02:36:13,467 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 02:36:13,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 02:36:13,467 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 02:36:13,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 02:36:13,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 02:36:13,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 02:36:13,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 02:36:13,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 02:36:13,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 02:36:13,468 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 02:36:13,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 02:36:13,468 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 02:36:13,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 02:36:13,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 02:36:13,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 02:36:13,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 02:36:13,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 02:36:13,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:36:13,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 02:36:13,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 02:36:13,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 02:36:13,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 02:36:13,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 02:36:13,469 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 02:36:13,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 02:36:13,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 02:36:13,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 02:36:13,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 02:36:13,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 02:36:13,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 02:36:13,673 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 02:36:13,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-01-18 02:36:13,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e34c3b39c/c3f869b01f4f42b1948888d40677575c/FLAG526c963f7 [2022-01-18 02:36:14,124 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 02:36:14,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-01-18 02:36:14,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e34c3b39c/c3f869b01f4f42b1948888d40677575c/FLAG526c963f7 [2022-01-18 02:36:14,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e34c3b39c/c3f869b01f4f42b1948888d40677575c [2022-01-18 02:36:14,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 02:36:14,141 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 02:36:14,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 02:36:14,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 02:36:14,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 02:36:14,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450c01e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14, skipping insertion in model container [2022-01-18 02:36:14,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 02:36:14,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 02:36:14,295 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-nonblocking-cntr.wvr.c[2037,2050] [2022-01-18 02:36:14,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:36:14,302 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 02:36:14,322 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-nonblocking-cntr.wvr.c[2037,2050] [2022-01-18 02:36:14,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:36:14,338 INFO L208 MainTranslator]: Completed translation [2022-01-18 02:36:14,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14 WrapperNode [2022-01-18 02:36:14,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 02:36:14,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 02:36:14,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 02:36:14,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 02:36:14,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,362 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-01-18 02:36:14,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 02:36:14,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 02:36:14,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 02:36:14,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 02:36:14,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 02:36:14,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 02:36:14,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 02:36:14,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 02:36:14,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14" (1/1) ... [2022-01-18 02:36:14,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:36:14,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:14,399 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) [2022-01-18 02:36:14,403 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 [2022-01-18 02:36:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 02:36:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 02:36:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 02:36:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 02:36:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 02:36:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 02:36:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 02:36:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 02:36:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 02:36:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 02:36:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 02:36:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 02:36:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 02:36:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 02:36:14,422 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 02:36:14,470 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 02:36:14,471 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 02:36:14,574 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 02:36:14,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 02:36:14,597 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 02:36:14,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:36:14 BoogieIcfgContainer [2022-01-18 02:36:14,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 02:36:14,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 02:36:14,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 02:36:14,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 02:36:14,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 02:36:14" (1/3) ... [2022-01-18 02:36:14,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d1bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:36:14, skipping insertion in model container [2022-01-18 02:36:14,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:36:14" (2/3) ... [2022-01-18 02:36:14,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d1bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:36:14, skipping insertion in model container [2022-01-18 02:36:14,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:36:14" (3/3) ... [2022-01-18 02:36:14,603 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2022-01-18 02:36:14,606 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 02:36:14,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 02:36:14,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 02:36:14,607 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 02:36:14,634 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,634 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,639 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,639 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,639 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,643 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,643 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,643 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,644 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,644 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,644 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,653 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,653 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,653 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,654 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,654 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,654 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,655 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,655 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,655 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,655 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,655 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,656 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,656 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,656 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,656 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,656 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,656 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,656 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,657 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,657 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,657 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,657 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,658 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,658 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,658 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,660 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,661 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,661 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,661 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,662 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,662 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,662 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,662 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:36:14,665 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 02:36:14,694 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 02:36:14,699 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, 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 [2022-01-18 02:36:14,699 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 02:36:14,707 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 82 transitions, 180 flow [2022-01-18 02:36:14,747 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:14,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-18 02:36:14,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:14,767 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] [2022-01-18 02:36:14,767 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:14,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1376248037, now seen corresponding path program 1 times [2022-01-18 02:36:14,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:14,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396418244] [2022-01-18 02:36:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:14,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:14,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:14,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:14,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396418244] [2022-01-18 02:36:14,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396418244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:36:14,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:36:14,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 02:36:14,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90812115] [2022-01-18 02:36:14,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:36:14,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 02:36:14,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:14,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 02:36:14,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:36:14,940 INFO L87 Difference]: Start difference. First operand has 328 states, 327 states have (on average 2.596330275229358) internal successors, (849), 327 states have internal predecessors, (849), 0 states have call successors, (0), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:14,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:14,980 INFO L93 Difference]: Finished difference Result 328 states and 778 transitions. [2022-01-18 02:36:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 02:36:14,983 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-18 02:36:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:14,998 INFO L225 Difference]: With dead ends: 328 [2022-01-18 02:36:14,998 INFO L226 Difference]: Without dead ends: 326 [2022-01-18 02:36:14,999 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 [2022-01-18 02:36:15,001 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:15,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:36:15,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-01-18 02:36:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2022-01-18 02:36:15,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.3876923076923076) internal successors, (776), 325 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 776 transitions. [2022-01-18 02:36:15,065 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 776 transitions. Word has length 58 [2022-01-18 02:36:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:15,065 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 776 transitions. [2022-01-18 02:36:15,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 776 transitions. [2022-01-18 02:36:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-18 02:36:15,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:15,068 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] [2022-01-18 02:36:15,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 02:36:15,068 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:15,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1501901863, now seen corresponding path program 1 times [2022-01-18 02:36:15,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:15,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292434819] [2022-01-18 02:36:15,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:15,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:15,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:15,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292434819] [2022-01-18 02:36:15,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292434819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:36:15,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:36:15,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 02:36:15,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165963748] [2022-01-18 02:36:15,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:36:15,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 02:36:15,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 02:36:15,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 02:36:15,296 INFO L87 Difference]: Start difference. First operand 326 states and 776 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:15,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:15,368 INFO L93 Difference]: Finished difference Result 500 states and 1208 transitions. [2022-01-18 02:36:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 02:36:15,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-18 02:36:15,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:15,372 INFO L225 Difference]: With dead ends: 500 [2022-01-18 02:36:15,372 INFO L226 Difference]: Without dead ends: 386 [2022-01-18 02:36:15,375 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 [2022-01-18 02:36:15,377 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 6 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:15,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 202 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:36:15,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-01-18 02:36:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 356. [2022-01-18 02:36:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.4056338028169013) internal successors, (854), 355 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:15,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 854 transitions. [2022-01-18 02:36:15,398 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 854 transitions. Word has length 58 [2022-01-18 02:36:15,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:15,399 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 854 transitions. [2022-01-18 02:36:15,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:15,399 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 854 transitions. [2022-01-18 02:36:15,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-18 02:36:15,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:15,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:15,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 02:36:15,406 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:15,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1550020423, now seen corresponding path program 1 times [2022-01-18 02:36:15,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:15,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499122472] [2022-01-18 02:36:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:15,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:15,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:15,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499122472] [2022-01-18 02:36:15,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499122472] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:15,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104673078] [2022-01-18 02:36:15,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:15,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:15,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:15,521 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) [2022-01-18 02:36:15,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 02:36:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:15,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 02:36:15,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:15,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:15,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104673078] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:15,798 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:15,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-01-18 02:36:15,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676118668] [2022-01-18 02:36:15,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:15,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 02:36:15,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:15,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 02:36:15,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-18 02:36:15,800 INFO L87 Difference]: Start difference. First operand 356 states and 854 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:15,913 INFO L93 Difference]: Finished difference Result 540 states and 1342 transitions. [2022-01-18 02:36:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 02:36:15,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-18 02:36:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:15,916 INFO L225 Difference]: With dead ends: 540 [2022-01-18 02:36:15,916 INFO L226 Difference]: Without dead ends: 540 [2022-01-18 02:36:15,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-01-18 02:36:15,917 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 143 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:15,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 454 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:36:15,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-01-18 02:36:15,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 391. [2022-01-18 02:36:15,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 2.4307692307692306) internal successors, (948), 390 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 948 transitions. [2022-01-18 02:36:15,925 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 948 transitions. Word has length 63 [2022-01-18 02:36:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:15,926 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 948 transitions. [2022-01-18 02:36:15,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 948 transitions. [2022-01-18 02:36:15,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-18 02:36:15,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:15,927 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] [2022-01-18 02:36:15,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 02:36:16,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:16,144 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:16,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2085302797, now seen corresponding path program 2 times [2022-01-18 02:36:16,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:16,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696496599] [2022-01-18 02:36:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:16,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:16,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:16,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696496599] [2022-01-18 02:36:16,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696496599] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:16,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605266373] [2022-01-18 02:36:16,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:36:16,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:16,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:16,223 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) [2022-01-18 02:36:16,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 02:36:16,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-18 02:36:16,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:16,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 02:36:16,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:36:16,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 02:36:16,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605266373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:36:16,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 02:36:16,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-01-18 02:36:16,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4960069] [2022-01-18 02:36:16,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:36:16,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 02:36:16,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 02:36:16,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-18 02:36:16,447 INFO L87 Difference]: Start difference. First operand 391 states and 948 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:16,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:16,540 INFO L93 Difference]: Finished difference Result 477 states and 1180 transitions. [2022-01-18 02:36:16,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 02:36:16,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-18 02:36:16,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:16,542 INFO L225 Difference]: With dead ends: 477 [2022-01-18 02:36:16,543 INFO L226 Difference]: Without dead ends: 477 [2022-01-18 02:36:16,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-01-18 02:36:16,543 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 107 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:16,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 174 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:36:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-18 02:36:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 399. [2022-01-18 02:36:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 2.437185929648241) internal successors, (970), 398 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 970 transitions. [2022-01-18 02:36:16,552 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 970 transitions. Word has length 63 [2022-01-18 02:36:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:16,552 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 970 transitions. [2022-01-18 02:36:16,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 970 transitions. [2022-01-18 02:36:16,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 02:36:16,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:16,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:16,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:16,767 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,SelfDestructingSolverStorable3 [2022-01-18 02:36:16,768 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:16,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:16,768 INFO L85 PathProgramCache]: Analyzing trace with hash -60630437, now seen corresponding path program 1 times [2022-01-18 02:36:16,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:16,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930045627] [2022-01-18 02:36:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:16,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:16,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:16,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930045627] [2022-01-18 02:36:16,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930045627] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:16,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305200164] [2022-01-18 02:36:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:16,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:16,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:16,846 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) [2022-01-18 02:36:16,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 02:36:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:16,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 02:36:16,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:17,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:17,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305200164] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:17,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:17,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2022-01-18 02:36:17,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534180185] [2022-01-18 02:36:17,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:17,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 02:36:17,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 02:36:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 02:36:17,416 INFO L87 Difference]: Start difference. First operand 399 states and 970 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:17,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:17,464 INFO L93 Difference]: Finished difference Result 896 states and 2243 transitions. [2022-01-18 02:36:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 02:36:17,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-18 02:36:17,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:17,467 INFO L225 Difference]: With dead ends: 896 [2022-01-18 02:36:17,467 INFO L226 Difference]: Without dead ends: 752 [2022-01-18 02:36:17,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-18 02:36:17,468 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 111 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:17,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 358 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:36:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-01-18 02:36:17,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 606. [2022-01-18 02:36:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 605 states have (on average 2.5355371900826444) internal successors, (1534), 605 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1534 transitions. [2022-01-18 02:36:17,479 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1534 transitions. Word has length 65 [2022-01-18 02:36:17,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:17,480 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 1534 transitions. [2022-01-18 02:36:17,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1534 transitions. [2022-01-18 02:36:17,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 02:36:17,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:17,481 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] [2022-01-18 02:36:17,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:17,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:17,699 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:17,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1922671995, now seen corresponding path program 2 times [2022-01-18 02:36:17,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:17,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290936905] [2022-01-18 02:36:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:17,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:17,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:17,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290936905] [2022-01-18 02:36:17,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290936905] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:17,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611070705] [2022-01-18 02:36:17,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:36:17,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:17,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:17,772 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) [2022-01-18 02:36:17,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 02:36:17,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:36:17,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:17,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 02:36:17,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:17,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:18,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611070705] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:18,064 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:18,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2022-01-18 02:36:18,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210371680] [2022-01-18 02:36:18,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:18,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 02:36:18,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:18,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 02:36:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 02:36:18,065 INFO L87 Difference]: Start difference. First operand 606 states and 1534 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:18,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:18,158 INFO L93 Difference]: Finished difference Result 755 states and 1922 transitions. [2022-01-18 02:36:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 02:36:18,158 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-18 02:36:18,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:18,161 INFO L225 Difference]: With dead ends: 755 [2022-01-18 02:36:18,161 INFO L226 Difference]: Without dead ends: 740 [2022-01-18 02:36:18,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2022-01-18 02:36:18,161 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 57 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:18,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 356 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:36:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-01-18 02:36:18,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 598. [2022-01-18 02:36:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 2.5326633165829144) internal successors, (1512), 597 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:18,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1512 transitions. [2022-01-18 02:36:18,172 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1512 transitions. Word has length 65 [2022-01-18 02:36:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:18,172 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 1512 transitions. [2022-01-18 02:36:18,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1512 transitions. [2022-01-18 02:36:18,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:18,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:18,174 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:18,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:18,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:18,387 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:18,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:18,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1971137093, now seen corresponding path program 3 times [2022-01-18 02:36:18,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:18,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995061823] [2022-01-18 02:36:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:18,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:18,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:18,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995061823] [2022-01-18 02:36:18,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995061823] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:18,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238097297] [2022-01-18 02:36:18,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:36:18,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:18,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:18,465 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) [2022-01-18 02:36:18,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 02:36:18,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:36:18,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:18,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:18,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:18,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:18,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238097297] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:18,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:18,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 20 [2022-01-18 02:36:18,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038329778] [2022-01-18 02:36:18,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:18,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 02:36:18,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:18,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 02:36:18,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:36:18,797 INFO L87 Difference]: Start difference. First operand 598 states and 1512 transitions. Second operand has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:19,682 INFO L93 Difference]: Finished difference Result 1484 states and 3857 transitions. [2022-01-18 02:36:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 02:36:19,682 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:19,687 INFO L225 Difference]: With dead ends: 1484 [2022-01-18 02:36:19,687 INFO L226 Difference]: Without dead ends: 1469 [2022-01-18 02:36:19,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=748, Invalid=3542, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 02:36:19,689 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 569 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:19,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 1755 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:36:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2022-01-18 02:36:19,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 680. [2022-01-18 02:36:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 2.552282768777614) internal successors, (1733), 679 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:19,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1733 transitions. [2022-01-18 02:36:19,706 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1733 transitions. Word has length 70 [2022-01-18 02:36:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:19,706 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 1733 transitions. [2022-01-18 02:36:19,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1733 transitions. [2022-01-18 02:36:19,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:19,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:19,708 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:19,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:19,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:19,925 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:19,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:19,926 INFO L85 PathProgramCache]: Analyzing trace with hash 481657637, now seen corresponding path program 4 times [2022-01-18 02:36:19,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:19,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956363550] [2022-01-18 02:36:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:19,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:20,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:20,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956363550] [2022-01-18 02:36:20,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956363550] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:20,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775618738] [2022-01-18 02:36:20,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:36:20,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:20,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:20,008 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) [2022-01-18 02:36:20,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 02:36:20,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:36:20,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:20,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 02:36:20,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:20,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:20,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775618738] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:20,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:20,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 25 [2022-01-18 02:36:20,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970237838] [2022-01-18 02:36:20,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:20,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 02:36:20,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 02:36:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-01-18 02:36:20,543 INFO L87 Difference]: Start difference. First operand 680 states and 1733 transitions. Second operand has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:21,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:21,101 INFO L93 Difference]: Finished difference Result 1453 states and 3763 transitions. [2022-01-18 02:36:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:36:21,101 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:21,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:21,106 INFO L225 Difference]: With dead ends: 1453 [2022-01-18 02:36:21,107 INFO L226 Difference]: Without dead ends: 1438 [2022-01-18 02:36:21,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=624, Invalid=2456, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 02:36:21,108 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 544 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:21,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1050 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-01-18 02:36:21,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 696. [2022-01-18 02:36:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 695 states have (on average 2.5568345323741006) internal successors, (1777), 695 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1777 transitions. [2022-01-18 02:36:21,123 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1777 transitions. Word has length 70 [2022-01-18 02:36:21,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:21,123 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 1777 transitions. [2022-01-18 02:36:21,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1777 transitions. [2022-01-18 02:36:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:21,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:21,125 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:21,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-01-18 02:36:21,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:21,340 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1740204831, now seen corresponding path program 5 times [2022-01-18 02:36:21,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:21,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546339287] [2022-01-18 02:36:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:21,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:21,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:21,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546339287] [2022-01-18 02:36:21,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546339287] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:21,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981480334] [2022-01-18 02:36:21,411 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:36:21,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:21,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:21,412 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) [2022-01-18 02:36:21,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 02:36:21,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:36:21,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:21,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:21,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:21,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:21,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981480334] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:21,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:21,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-01-18 02:36:21,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585686027] [2022-01-18 02:36:21,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:21,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:36:21,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:21,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:36:21,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:36:21,901 INFO L87 Difference]: Start difference. First operand 696 states and 1777 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:22,953 INFO L93 Difference]: Finished difference Result 2222 states and 5753 transitions. [2022-01-18 02:36:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 02:36:22,954 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:22,961 INFO L225 Difference]: With dead ends: 2222 [2022-01-18 02:36:22,961 INFO L226 Difference]: Without dead ends: 2207 [2022-01-18 02:36:22,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1453, Invalid=5519, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 02:36:22,963 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 652 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:22,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [652 Valid, 1504 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:36:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2022-01-18 02:36:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 736. [2022-01-18 02:36:22,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 2.578231292517007) internal successors, (1895), 735 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1895 transitions. [2022-01-18 02:36:22,985 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1895 transitions. Word has length 70 [2022-01-18 02:36:22,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:22,985 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1895 transitions. [2022-01-18 02:36:22,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:22,985 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1895 transitions. [2022-01-18 02:36:22,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:22,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:22,987 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:23,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:23,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:23,201 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1015878651, now seen corresponding path program 6 times [2022-01-18 02:36:23,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:23,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664326393] [2022-01-18 02:36:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:23,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:23,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:23,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664326393] [2022-01-18 02:36:23,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664326393] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:23,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230571380] [2022-01-18 02:36:23,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:36:23,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:23,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:23,263 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) [2022-01-18 02:36:23,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 02:36:23,307 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:36:23,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:23,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:23,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:23,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:23,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230571380] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:23,728 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:23,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2022-01-18 02:36:23,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610764721] [2022-01-18 02:36:23,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:23,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:36:23,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:36:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:36:23,729 INFO L87 Difference]: Start difference. First operand 736 states and 1895 transitions. Second operand has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:24,316 INFO L93 Difference]: Finished difference Result 1526 states and 3939 transitions. [2022-01-18 02:36:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 02:36:24,316 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:24,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:24,321 INFO L225 Difference]: With dead ends: 1526 [2022-01-18 02:36:24,322 INFO L226 Difference]: Without dead ends: 1502 [2022-01-18 02:36:24,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=620, Invalid=2136, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 02:36:24,323 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 854 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:24,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 1014 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:24,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2022-01-18 02:36:24,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 736. [2022-01-18 02:36:24,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 2.5673469387755103) internal successors, (1887), 735 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1887 transitions. [2022-01-18 02:36:24,356 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1887 transitions. Word has length 70 [2022-01-18 02:36:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:24,356 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 1887 transitions. [2022-01-18 02:36:24,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:24,357 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1887 transitions. [2022-01-18 02:36:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:24,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:24,358 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:24,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:24,558 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,SelfDestructingSolverStorable9 [2022-01-18 02:36:24,559 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:24,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:24,559 INFO L85 PathProgramCache]: Analyzing trace with hash 221980705, now seen corresponding path program 7 times [2022-01-18 02:36:24,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:24,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491393619] [2022-01-18 02:36:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:24,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:24,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:24,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491393619] [2022-01-18 02:36:24,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491393619] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:24,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402869961] [2022-01-18 02:36:24,632 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:36:24,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:24,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:24,633 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) [2022-01-18 02:36:24,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 02:36:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:24,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:24,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:24,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:25,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402869961] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:25,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:25,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-01-18 02:36:25,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423860194] [2022-01-18 02:36:25,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:25,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 02:36:25,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:25,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 02:36:25,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-01-18 02:36:25,113 INFO L87 Difference]: Start difference. First operand 736 states and 1887 transitions. Second operand has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:26,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:26,109 INFO L93 Difference]: Finished difference Result 2307 states and 5966 transitions. [2022-01-18 02:36:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 02:36:26,110 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:26,131 INFO L225 Difference]: With dead ends: 2307 [2022-01-18 02:36:26,131 INFO L226 Difference]: Without dead ends: 2277 [2022-01-18 02:36:26,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1262, Invalid=4900, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 02:36:26,133 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 513 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:26,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 1465 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:36:26,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-01-18 02:36:26,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 900. [2022-01-18 02:36:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 2.6407119021134595) internal successors, (2374), 899 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2374 transitions. [2022-01-18 02:36:26,164 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2374 transitions. Word has length 70 [2022-01-18 02:36:26,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:26,164 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2374 transitions. [2022-01-18 02:36:26,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:26,164 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2374 transitions. [2022-01-18 02:36:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:26,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:26,167 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:26,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:26,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:26,383 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:26,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:26,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1316903109, now seen corresponding path program 8 times [2022-01-18 02:36:26,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:26,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151315271] [2022-01-18 02:36:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:26,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:26,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:26,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151315271] [2022-01-18 02:36:26,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151315271] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:26,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536716877] [2022-01-18 02:36:26,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:36:26,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:26,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:26,460 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) [2022-01-18 02:36:26,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 02:36:26,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:36:26,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:26,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:26,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:26,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:26,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536716877] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:26,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:26,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-01-18 02:36:26,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702775179] [2022-01-18 02:36:26,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:26,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 02:36:26,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 02:36:26,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-01-18 02:36:26,894 INFO L87 Difference]: Start difference. First operand 900 states and 2374 transitions. Second operand has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:27,490 INFO L93 Difference]: Finished difference Result 2098 states and 5385 transitions. [2022-01-18 02:36:27,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 02:36:27,490 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:27,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:27,496 INFO L225 Difference]: With dead ends: 2098 [2022-01-18 02:36:27,497 INFO L226 Difference]: Without dead ends: 2050 [2022-01-18 02:36:27,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=663, Invalid=2529, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 02:36:27,498 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 594 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:27,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1103 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2022-01-18 02:36:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 916. [2022-01-18 02:36:27,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 2.625136612021858) internal successors, (2402), 915 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 2402 transitions. [2022-01-18 02:36:27,519 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 2402 transitions. Word has length 70 [2022-01-18 02:36:27,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:27,519 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 2402 transitions. [2022-01-18 02:36:27,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 2402 transitions. [2022-01-18 02:36:27,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:27,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:27,521 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:27,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:27,736 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,SelfDestructingSolverStorable11 [2022-01-18 02:36:27,737 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:27,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1472197725, now seen corresponding path program 9 times [2022-01-18 02:36:27,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:27,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423933824] [2022-01-18 02:36:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:27,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:27,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:27,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423933824] [2022-01-18 02:36:27,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423933824] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:27,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883039283] [2022-01-18 02:36:27,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:36:27,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:27,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:27,809 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) [2022-01-18 02:36:27,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 02:36:27,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:36:27,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:27,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:27,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:28,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:28,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883039283] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:28,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:28,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-01-18 02:36:28,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769117238] [2022-01-18 02:36:28,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:28,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:36:28,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:28,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:36:28,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:36:28,273 INFO L87 Difference]: Start difference. First operand 916 states and 2402 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:28,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:28,562 INFO L93 Difference]: Finished difference Result 1287 states and 3381 transitions. [2022-01-18 02:36:28,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 02:36:28,567 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:28,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:28,571 INFO L225 Difference]: With dead ends: 1287 [2022-01-18 02:36:28,571 INFO L226 Difference]: Without dead ends: 1251 [2022-01-18 02:36:28,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=288, Invalid=1118, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:36:28,572 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 355 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:28,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 1317 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-01-18 02:36:28,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 928. [2022-01-18 02:36:28,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 927 states have (on average 2.626752966558792) internal successors, (2435), 927 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 2435 transitions. [2022-01-18 02:36:28,588 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 2435 transitions. Word has length 70 [2022-01-18 02:36:28,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:28,588 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 2435 transitions. [2022-01-18 02:36:28,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 2435 transitions. [2022-01-18 02:36:28,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:28,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:28,590 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:28,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:28,806 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,SelfDestructingSolverStorable12 [2022-01-18 02:36:28,806 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:28,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:28,806 INFO L85 PathProgramCache]: Analyzing trace with hash -313771491, now seen corresponding path program 10 times [2022-01-18 02:36:28,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:28,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321315257] [2022-01-18 02:36:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:28,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:28,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:28,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321315257] [2022-01-18 02:36:28,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321315257] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:28,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136021896] [2022-01-18 02:36:28,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:36:28,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:28,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:28,864 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) [2022-01-18 02:36:28,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 02:36:28,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:36:28,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:28,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:28,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:29,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:29,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:29,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136021896] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:29,293 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:29,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-01-18 02:36:29,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072899124] [2022-01-18 02:36:29,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:29,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:36:29,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:29,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:36:29,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:36:29,294 INFO L87 Difference]: Start difference. First operand 928 states and 2435 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:29,644 INFO L93 Difference]: Finished difference Result 1677 states and 4444 transitions. [2022-01-18 02:36:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 02:36:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:29,649 INFO L225 Difference]: With dead ends: 1677 [2022-01-18 02:36:29,649 INFO L226 Difference]: Without dead ends: 1641 [2022-01-18 02:36:29,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=1320, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:36:29,650 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 350 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:29,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1181 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:36:29,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2022-01-18 02:36:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 936. [2022-01-18 02:36:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 935 states have (on average 2.627807486631016) internal successors, (2457), 935 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 2457 transitions. [2022-01-18 02:36:29,669 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 2457 transitions. Word has length 70 [2022-01-18 02:36:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:29,669 INFO L470 AbstractCegarLoop]: Abstraction has 936 states and 2457 transitions. [2022-01-18 02:36:29,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 2457 transitions. [2022-01-18 02:36:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:29,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:29,671 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:29,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:29,886 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,SelfDestructingSolverStorable13 [2022-01-18 02:36:29,887 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1417338203, now seen corresponding path program 11 times [2022-01-18 02:36:29,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:29,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138871652] [2022-01-18 02:36:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:29,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:29,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:29,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:29,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138871652] [2022-01-18 02:36:29,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138871652] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:29,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341480755] [2022-01-18 02:36:29,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:36:29,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:29,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:29,970 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) [2022-01-18 02:36:29,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 02:36:30,015 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:36:30,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:30,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:30,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:30,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:30,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341480755] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:30,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:30,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-01-18 02:36:30,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062408278] [2022-01-18 02:36:30,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:30,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 02:36:30,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:30,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 02:36:30,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-01-18 02:36:30,398 INFO L87 Difference]: Start difference. First operand 936 states and 2457 transitions. Second operand has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:31,320 INFO L93 Difference]: Finished difference Result 3265 states and 8631 transitions. [2022-01-18 02:36:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 02:36:31,320 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:31,329 INFO L225 Difference]: With dead ends: 3265 [2022-01-18 02:36:31,329 INFO L226 Difference]: Without dead ends: 3235 [2022-01-18 02:36:31,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1678 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1136, Invalid=4120, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 02:36:31,330 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 702 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:31,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 1801 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:36:31,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2022-01-18 02:36:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 1344. [2022-01-18 02:36:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 2.7513030528667164) internal successors, (3695), 1343 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 3695 transitions. [2022-01-18 02:36:31,361 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 3695 transitions. Word has length 70 [2022-01-18 02:36:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:31,361 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 3695 transitions. [2022-01-18 02:36:31,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.826086956521739) internal successors, (157), 23 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 3695 transitions. [2022-01-18 02:36:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:31,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:31,364 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:31,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:31,579 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,SelfDestructingSolverStorable14 [2022-01-18 02:36:31,580 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:31,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:31,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1338745279, now seen corresponding path program 12 times [2022-01-18 02:36:31,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:31,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817975939] [2022-01-18 02:36:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:31,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:31,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:31,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817975939] [2022-01-18 02:36:31,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817975939] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:31,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133731427] [2022-01-18 02:36:31,645 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:36:31,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:31,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:31,646 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) [2022-01-18 02:36:31,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 02:36:31,697 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:36:31,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:31,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:31,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:31,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:32,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133731427] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:32,041 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:32,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2022-01-18 02:36:32,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838871989] [2022-01-18 02:36:32,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:32,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 02:36:32,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:32,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 02:36:32,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-01-18 02:36:32,042 INFO L87 Difference]: Start difference. First operand 1344 states and 3695 transitions. Second operand has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:32,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:32,710 INFO L93 Difference]: Finished difference Result 3079 states and 8156 transitions. [2022-01-18 02:36:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 02:36:32,710 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:32,716 INFO L225 Difference]: With dead ends: 3079 [2022-01-18 02:36:32,716 INFO L226 Difference]: Without dead ends: 3031 [2022-01-18 02:36:32,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=694, Invalid=2498, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 02:36:32,718 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 606 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:32,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1486 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:36:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-01-18 02:36:32,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1340. [2022-01-18 02:36:32,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 2.745332337565347) internal successors, (3676), 1339 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:32,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 3676 transitions. [2022-01-18 02:36:32,794 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 3676 transitions. Word has length 70 [2022-01-18 02:36:32,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:32,794 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 3676 transitions. [2022-01-18 02:36:32,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.478260869565218) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:32,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 3676 transitions. [2022-01-18 02:36:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:32,797 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:32,797 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:32,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:33,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:33,011 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:33,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash -167121183, now seen corresponding path program 13 times [2022-01-18 02:36:33,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:33,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510776004] [2022-01-18 02:36:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:33,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:33,080 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:33,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:33,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510776004] [2022-01-18 02:36:33,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510776004] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:33,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435805204] [2022-01-18 02:36:33,080 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:36:33,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:33,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:33,082 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) [2022-01-18 02:36:33,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 02:36:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:33,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:33,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:33,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:33,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435805204] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:33,518 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:33,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-01-18 02:36:33,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808468902] [2022-01-18 02:36:33,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:33,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:36:33,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:36:33,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:36:33,519 INFO L87 Difference]: Start difference. First operand 1340 states and 3676 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:34,312 INFO L93 Difference]: Finished difference Result 3774 states and 10220 transitions. [2022-01-18 02:36:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 02:36:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:34,320 INFO L225 Difference]: With dead ends: 3774 [2022-01-18 02:36:34,320 INFO L226 Difference]: Without dead ends: 3738 [2022-01-18 02:36:34,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=906, Invalid=3786, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 02:36:34,322 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 782 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:34,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1513 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2022-01-18 02:36:34,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 2108. [2022-01-18 02:36:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 2.815377313716184) internal successors, (5932), 2107 states have internal predecessors, (5932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5932 transitions. [2022-01-18 02:36:34,363 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5932 transitions. Word has length 70 [2022-01-18 02:36:34,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:34,363 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5932 transitions. [2022-01-18 02:36:34,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5932 transitions. [2022-01-18 02:36:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:34,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:34,367 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:34,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:34,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 02:36:34,583 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:34,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1676534515, now seen corresponding path program 14 times [2022-01-18 02:36:34,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:34,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161164882] [2022-01-18 02:36:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:34,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:34,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:34,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161164882] [2022-01-18 02:36:34,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161164882] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:34,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835633144] [2022-01-18 02:36:34,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:36:34,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:34,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:34,650 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) [2022-01-18 02:36:34,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 02:36:34,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:36:34,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:34,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:34,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:34,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:35,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835633144] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:35,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:35,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-01-18 02:36:35,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554304936] [2022-01-18 02:36:35,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:35,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:36:35,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:36:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:36:35,113 INFO L87 Difference]: Start difference. First operand 2108 states and 5932 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:35,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:35,343 INFO L93 Difference]: Finished difference Result 2346 states and 6507 transitions. [2022-01-18 02:36:35,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 02:36:35,343 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:35,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:35,347 INFO L225 Difference]: With dead ends: 2346 [2022-01-18 02:36:35,348 INFO L226 Difference]: Without dead ends: 2298 [2022-01-18 02:36:35,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:36:35,348 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 325 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:35,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 899 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:36:35,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2022-01-18 02:36:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2108. [2022-01-18 02:36:35,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 2.813478879924063) internal successors, (5928), 2107 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 5928 transitions. [2022-01-18 02:36:35,385 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 5928 transitions. Word has length 70 [2022-01-18 02:36:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:35,385 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 5928 transitions. [2022-01-18 02:36:35,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 5928 transitions. [2022-01-18 02:36:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:35,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:35,390 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:35,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:35,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 02:36:35,603 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:35,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:35,603 INFO L85 PathProgramCache]: Analyzing trace with hash -570914211, now seen corresponding path program 15 times [2022-01-18 02:36:35,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:35,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672848809] [2022-01-18 02:36:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:35,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:35,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:35,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672848809] [2022-01-18 02:36:35,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672848809] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:35,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305331361] [2022-01-18 02:36:35,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:36:35,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:35,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:35,670 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:35,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 02:36:35,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:36:35,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:35,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:35,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:35,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:36,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305331361] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:36,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:36,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-01-18 02:36:36,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351395891] [2022-01-18 02:36:36,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:36,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:36:36,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:36:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:36:36,060 INFO L87 Difference]: Start difference. First operand 2108 states and 5928 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:36,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:36,509 INFO L93 Difference]: Finished difference Result 3337 states and 9298 transitions. [2022-01-18 02:36:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 02:36:36,509 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:36,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:36,515 INFO L225 Difference]: With dead ends: 3337 [2022-01-18 02:36:36,515 INFO L226 Difference]: Without dead ends: 3253 [2022-01-18 02:36:36,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=462, Invalid=1988, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 02:36:36,516 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 384 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:36,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 1098 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:36,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2022-01-18 02:36:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 2316. [2022-01-18 02:36:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 2315 states have (on average 2.819870410367171) internal successors, (6528), 2315 states have internal predecessors, (6528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 6528 transitions. [2022-01-18 02:36:36,554 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 6528 transitions. Word has length 70 [2022-01-18 02:36:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:36,554 INFO L470 AbstractCegarLoop]: Abstraction has 2316 states and 6528 transitions. [2022-01-18 02:36:36,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 6528 transitions. [2022-01-18 02:36:36,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:36,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:36,558 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:36,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-01-18 02:36:36,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:36,771 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:36,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash -424263903, now seen corresponding path program 16 times [2022-01-18 02:36:36,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:36,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102134270] [2022-01-18 02:36:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:36,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:36,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:36,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102134270] [2022-01-18 02:36:36,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102134270] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:36,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665988469] [2022-01-18 02:36:36,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:36:36,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:36,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:36,855 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:36,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 02:36:36,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:36:36,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:36,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:36,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:37,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:37,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665988469] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:37,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:37,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-01-18 02:36:37,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890869199] [2022-01-18 02:36:37,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:37,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:36:37,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:37,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:36:37,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:36:37,235 INFO L87 Difference]: Start difference. First operand 2316 states and 6528 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:37,829 INFO L93 Difference]: Finished difference Result 4519 states and 12420 transitions. [2022-01-18 02:36:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 02:36:37,829 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:37,839 INFO L225 Difference]: With dead ends: 4519 [2022-01-18 02:36:37,839 INFO L226 Difference]: Without dead ends: 4435 [2022-01-18 02:36:37,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=650, Invalid=2542, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 02:36:37,840 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 595 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:37,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 1345 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2022-01-18 02:36:37,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 1840. [2022-01-18 02:36:37,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 2.809679173463839) internal successors, (5167), 1839 states have internal predecessors, (5167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 5167 transitions. [2022-01-18 02:36:37,881 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 5167 transitions. Word has length 70 [2022-01-18 02:36:37,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:37,881 INFO L470 AbstractCegarLoop]: Abstraction has 1840 states and 5167 transitions. [2022-01-18 02:36:37,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 5167 transitions. [2022-01-18 02:36:37,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:37,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:37,884 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:37,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:38,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:38,104 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:38,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:38,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1419391795, now seen corresponding path program 17 times [2022-01-18 02:36:38,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:38,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828441018] [2022-01-18 02:36:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:38,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:38,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:38,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828441018] [2022-01-18 02:36:38,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828441018] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:38,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584791536] [2022-01-18 02:36:38,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:36:38,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:38,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:38,169 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:38,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 02:36:38,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:36:38,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:38,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 02:36:38,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:38,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:38,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:38,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584791536] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:38,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:38,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2022-01-18 02:36:38,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578850073] [2022-01-18 02:36:38,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:38,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:36:38,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:38,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:36:38,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:36:38,526 INFO L87 Difference]: Start difference. First operand 1840 states and 5167 transitions. Second operand has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:38,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:38,774 INFO L93 Difference]: Finished difference Result 2482 states and 6932 transitions. [2022-01-18 02:36:38,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 02:36:38,775 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:38,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:38,779 INFO L225 Difference]: With dead ends: 2482 [2022-01-18 02:36:38,779 INFO L226 Difference]: Without dead ends: 2434 [2022-01-18 02:36:38,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:36:38,779 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 281 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:38,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 702 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:36:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2022-01-18 02:36:38,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1832. [2022-01-18 02:36:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 2.8099399235390496) internal successors, (5145), 1831 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:38,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 5145 transitions. [2022-01-18 02:36:38,805 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 5145 transitions. Word has length 70 [2022-01-18 02:36:38,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:38,805 INFO L470 AbstractCegarLoop]: Abstraction has 1832 states and 5145 transitions. [2022-01-18 02:36:38,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:38,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 5145 transitions. [2022-01-18 02:36:38,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:38,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:38,810 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:38,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:39,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:39,023 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:39,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:39,024 INFO L85 PathProgramCache]: Analyzing trace with hash -490468571, now seen corresponding path program 18 times [2022-01-18 02:36:39,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:39,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700107242] [2022-01-18 02:36:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:39,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:39,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:39,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700107242] [2022-01-18 02:36:39,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700107242] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:39,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133454874] [2022-01-18 02:36:39,107 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:36:39,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:39,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:39,108 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:39,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 02:36:39,158 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:36:39,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:39,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 02:36:39,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:39,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:39,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133454874] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:39,585 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:39,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2022-01-18 02:36:39,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730883712] [2022-01-18 02:36:39,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:39,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 02:36:39,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:39,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 02:36:39,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-01-18 02:36:39,587 INFO L87 Difference]: Start difference. First operand 1832 states and 5145 transitions. Second operand has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:40,073 INFO L93 Difference]: Finished difference Result 2986 states and 8110 transitions. [2022-01-18 02:36:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 02:36:40,073 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:40,077 INFO L225 Difference]: With dead ends: 2986 [2022-01-18 02:36:40,077 INFO L226 Difference]: Without dead ends: 2956 [2022-01-18 02:36:40,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=557, Invalid=2095, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 02:36:40,078 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 423 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:40,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 1388 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:40,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-01-18 02:36:40,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2000. [2022-01-18 02:36:40,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 2.8269134567283642) internal successors, (5651), 1999 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 5651 transitions. [2022-01-18 02:36:40,108 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 5651 transitions. Word has length 70 [2022-01-18 02:36:40,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:40,108 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 5651 transitions. [2022-01-18 02:36:40,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.5) internal successors, (169), 26 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 5651 transitions. [2022-01-18 02:36:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:40,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:40,114 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:40,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:40,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-18 02:36:40,329 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:40,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:40,329 INFO L85 PathProgramCache]: Analyzing trace with hash 43752443, now seen corresponding path program 19 times [2022-01-18 02:36:40,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:40,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793535290] [2022-01-18 02:36:40,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:40,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:40,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:40,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793535290] [2022-01-18 02:36:40,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793535290] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:40,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025488624] [2022-01-18 02:36:40,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:36:40,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:40,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:40,389 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:40,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 02:36:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:40,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:40,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:40,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:40,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025488624] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:40,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:40,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-01-18 02:36:40,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202931346] [2022-01-18 02:36:40,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:40,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:36:40,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:40,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:36:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:36:40,812 INFO L87 Difference]: Start difference. First operand 2000 states and 5651 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:41,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:41,139 INFO L93 Difference]: Finished difference Result 2623 states and 7248 transitions. [2022-01-18 02:36:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 02:36:41,139 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:41,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:41,143 INFO L225 Difference]: With dead ends: 2623 [2022-01-18 02:36:41,143 INFO L226 Difference]: Without dead ends: 2575 [2022-01-18 02:36:41,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:36:41,143 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 371 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:41,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 878 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2022-01-18 02:36:41,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2184. [2022-01-18 02:36:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 2183 states have (on average 2.836921667430142) internal successors, (6193), 2183 states have internal predecessors, (6193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 6193 transitions. [2022-01-18 02:36:41,172 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 6193 transitions. Word has length 70 [2022-01-18 02:36:41,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:41,172 INFO L470 AbstractCegarLoop]: Abstraction has 2184 states and 6193 transitions. [2022-01-18 02:36:41,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:41,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 6193 transitions. [2022-01-18 02:36:41,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:41,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:41,175 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:41,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-01-18 02:36:41,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-18 02:36:41,376 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash 185043233, now seen corresponding path program 20 times [2022-01-18 02:36:41,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:41,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572850960] [2022-01-18 02:36:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:41,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:41,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:41,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572850960] [2022-01-18 02:36:41,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572850960] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:41,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300286755] [2022-01-18 02:36:41,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:36:41,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:41,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:41,443 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:41,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 02:36:41,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:36:41,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:41,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:41,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:41,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:36:41,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300286755] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:41,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:41,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-01-18 02:36:41,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717061964] [2022-01-18 02:36:41,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:41,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:36:41,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:36:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:36:41,815 INFO L87 Difference]: Start difference. First operand 2184 states and 6193 transitions. Second operand has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:42,298 INFO L93 Difference]: Finished difference Result 3459 states and 9481 transitions. [2022-01-18 02:36:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 02:36:42,298 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:42,303 INFO L225 Difference]: With dead ends: 3459 [2022-01-18 02:36:42,303 INFO L226 Difference]: Without dead ends: 3429 [2022-01-18 02:36:42,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=494, Invalid=1858, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 02:36:42,304 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 377 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:42,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 1079 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2022-01-18 02:36:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2476. [2022-01-18 02:36:42,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2475 states have (on average 2.850909090909091) internal successors, (7056), 2475 states have internal predecessors, (7056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 7056 transitions. [2022-01-18 02:36:42,339 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 7056 transitions. Word has length 70 [2022-01-18 02:36:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:42,339 INFO L470 AbstractCegarLoop]: Abstraction has 2476 states and 7056 transitions. [2022-01-18 02:36:42,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 7056 transitions. [2022-01-18 02:36:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:42,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:42,369 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:42,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-01-18 02:36:42,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:42,571 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:42,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:42,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1353840581, now seen corresponding path program 21 times [2022-01-18 02:36:42,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:42,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482512619] [2022-01-18 02:36:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:42,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:42,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:42,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482512619] [2022-01-18 02:36:42,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482512619] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:42,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555652621] [2022-01-18 02:36:42,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:36:42,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:42,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:42,636 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:42,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 02:36:42,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:36:42,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:42,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:42,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:42,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:42,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555652621] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:42,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:42,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-01-18 02:36:42,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294744245] [2022-01-18 02:36:42,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:42,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:36:42,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:36:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:36:42,988 INFO L87 Difference]: Start difference. First operand 2476 states and 7056 transitions. Second operand has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:43,389 INFO L93 Difference]: Finished difference Result 3275 states and 9012 transitions. [2022-01-18 02:36:43,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 02:36:43,389 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:43,394 INFO L225 Difference]: With dead ends: 3275 [2022-01-18 02:36:43,394 INFO L226 Difference]: Without dead ends: 3227 [2022-01-18 02:36:43,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=377, Invalid=1515, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 02:36:43,394 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 298 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:43,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 1355 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:43,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2022-01-18 02:36:43,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2344. [2022-01-18 02:36:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-01-18 02:36:43,429 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-01-18 02:36:43,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:43,430 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-01-18 02:36:43,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:43,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-01-18 02:36:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:43,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:43,433 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:43,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:43,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:43,639 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:43,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:43,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1435260253, now seen corresponding path program 22 times [2022-01-18 02:36:43,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:43,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138917523] [2022-01-18 02:36:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:43,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:43,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:43,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138917523] [2022-01-18 02:36:43,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138917523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:43,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931892873] [2022-01-18 02:36:43,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:36:43,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:43,699 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:43,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 02:36:43,754 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:36:43,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:43,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:43,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:43,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:44,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931892873] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:44,101 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:44,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-01-18 02:36:44,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973628151] [2022-01-18 02:36:44,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:44,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:36:44,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:44,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:36:44,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:36:44,102 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:44,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:44,479 INFO L93 Difference]: Finished difference Result 2869 states and 7974 transitions. [2022-01-18 02:36:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 02:36:44,479 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:44,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:44,483 INFO L225 Difference]: With dead ends: 2869 [2022-01-18 02:36:44,483 INFO L226 Difference]: Without dead ends: 2797 [2022-01-18 02:36:44,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=1620, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 02:36:44,483 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 295 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:44,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 1235 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:44,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-01-18 02:36:44,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2348. [2022-01-18 02:36:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2347 states have (on average 2.8410737111205795) internal successors, (6668), 2347 states have internal predecessors, (6668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 6668 transitions. [2022-01-18 02:36:44,513 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 6668 transitions. Word has length 70 [2022-01-18 02:36:44,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:44,514 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 6668 transitions. [2022-01-18 02:36:44,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:44,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 6668 transitions. [2022-01-18 02:36:44,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:44,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:44,517 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:44,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:44,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 02:36:44,723 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash 331693541, now seen corresponding path program 23 times [2022-01-18 02:36:44,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:44,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257479626] [2022-01-18 02:36:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:44,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:44,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:44,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257479626] [2022-01-18 02:36:44,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257479626] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:44,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860016181] [2022-01-18 02:36:44,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:36:44,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:44,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:44,784 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:44,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 02:36:44,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:36:44,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:44,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:44,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:44,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:36:45,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860016181] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:45,131 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:45,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-01-18 02:36:45,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881474929] [2022-01-18 02:36:45,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:45,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:36:45,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:45,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:36:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:36:45,132 INFO L87 Difference]: Start difference. First operand 2348 states and 6668 transitions. Second operand has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:45,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:45,631 INFO L93 Difference]: Finished difference Result 3827 states and 10486 transitions. [2022-01-18 02:36:45,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 02:36:45,631 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:45,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:45,636 INFO L225 Difference]: With dead ends: 3827 [2022-01-18 02:36:45,636 INFO L226 Difference]: Without dead ends: 3797 [2022-01-18 02:36:45,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=562, Invalid=1988, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 02:36:45,637 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 393 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:45,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 1460 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:45,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2022-01-18 02:36:45,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2672. [2022-01-18 02:36:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2671 states have (on average 2.868962935230251) internal successors, (7663), 2671 states have internal predecessors, (7663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:45,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 7663 transitions. [2022-01-18 02:36:45,678 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 7663 transitions. Word has length 70 [2022-01-18 02:36:45,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:45,678 INFO L470 AbstractCegarLoop]: Abstraction has 2672 states and 7663 transitions. [2022-01-18 02:36:45,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.136363636363637) internal successors, (157), 22 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:45,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 7663 transitions. [2022-01-18 02:36:45,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:45,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:45,682 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:45,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:45,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 02:36:45,898 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:45,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:45,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1207190273, now seen corresponding path program 24 times [2022-01-18 02:36:45,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:45,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455700004] [2022-01-18 02:36:45,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:45,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:45,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:45,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455700004] [2022-01-18 02:36:45,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455700004] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:45,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448564118] [2022-01-18 02:36:45,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:36:45,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:45,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:45,960 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:45,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 02:36:46,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:36:46,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:46,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:46,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:46,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:46,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448564118] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:46,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:46,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-01-18 02:36:46,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562803362] [2022-01-18 02:36:46,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:46,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:36:46,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:36:46,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:36:46,302 INFO L87 Difference]: Start difference. First operand 2672 states and 7663 transitions. Second operand has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:46,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:46,681 INFO L93 Difference]: Finished difference Result 3690 states and 10156 transitions. [2022-01-18 02:36:46,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 02:36:46,681 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:46,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:46,686 INFO L225 Difference]: With dead ends: 3690 [2022-01-18 02:36:46,686 INFO L226 Difference]: Without dead ends: 3642 [2022-01-18 02:36:46,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=418, Invalid=1562, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 02:36:46,687 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 512 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:46,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 1004 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2022-01-18 02:36:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 2464. [2022-01-18 02:36:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 2463 states have (on average 2.8400324807145756) internal successors, (6995), 2463 states have internal predecessors, (6995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 6995 transitions. [2022-01-18 02:36:46,721 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 6995 transitions. Word has length 70 [2022-01-18 02:36:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:46,722 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 6995 transitions. [2022-01-18 02:36:46,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 6995 transitions. [2022-01-18 02:36:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:46,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:46,725 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:46,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:46,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 02:36:46,941 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:46,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:46,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1581910561, now seen corresponding path program 25 times [2022-01-18 02:36:46,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:46,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092215595] [2022-01-18 02:36:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:46,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:47,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:47,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092215595] [2022-01-18 02:36:47,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092215595] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:47,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160018991] [2022-01-18 02:36:47,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:36:47,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:47,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:47,013 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:47,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 02:36:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:47,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:47,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:47,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:47,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:47,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160018991] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:47,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:47,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-01-18 02:36:47,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231231832] [2022-01-18 02:36:47,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:47,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:36:47,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:47,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:36:47,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:36:47,423 INFO L87 Difference]: Start difference. First operand 2464 states and 6995 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:47,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:47,888 INFO L93 Difference]: Finished difference Result 3768 states and 10314 transitions. [2022-01-18 02:36:47,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 02:36:47,888 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:47,893 INFO L225 Difference]: With dead ends: 3768 [2022-01-18 02:36:47,893 INFO L226 Difference]: Without dead ends: 3696 [2022-01-18 02:36:47,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=507, Invalid=2145, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 02:36:47,894 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 506 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:47,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1238 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:36:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2022-01-18 02:36:47,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 2344. [2022-01-18 02:36:47,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-01-18 02:36:47,946 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-01-18 02:36:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:47,946 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-01-18 02:36:47,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-01-18 02:36:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 02:36:47,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:47,950 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 02:36:47,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:48,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 02:36:48,165 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:48,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:48,166 INFO L85 PathProgramCache]: Analyzing trace with hash -869401037, now seen corresponding path program 26 times [2022-01-18 02:36:48,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:48,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282786243] [2022-01-18 02:36:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:48,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:48,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:48,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282786243] [2022-01-18 02:36:48,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282786243] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:48,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129013278] [2022-01-18 02:36:48,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:36:48,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:48,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:48,245 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:48,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 02:36:48,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:36:48,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:48,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:36:48,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:48,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:48,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129013278] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:48,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:48,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2022-01-18 02:36:48,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151138284] [2022-01-18 02:36:48,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:48,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:36:48,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:36:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:36:48,641 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:48,860 INFO L93 Difference]: Finished difference Result 2575 states and 7190 transitions. [2022-01-18 02:36:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 02:36:48,860 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-18 02:36:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:48,864 INFO L225 Difference]: With dead ends: 2575 [2022-01-18 02:36:48,864 INFO L226 Difference]: Without dead ends: 2527 [2022-01-18 02:36:48,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:36:48,864 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 307 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:48,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1025 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:36:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-01-18 02:36:48,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2344. [2022-01-18 02:36:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 2.8412291933418694) internal successors, (6657), 2343 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 6657 transitions. [2022-01-18 02:36:48,891 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 6657 transitions. Word has length 70 [2022-01-18 02:36:48,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:48,891 INFO L470 AbstractCegarLoop]: Abstraction has 2344 states and 6657 transitions. [2022-01-18 02:36:48,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.333333333333333) internal successors, (152), 24 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 6657 transitions. [2022-01-18 02:36:48,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:36:48,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:48,894 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:48,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:49,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:49,098 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:49,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1026824483, now seen corresponding path program 27 times [2022-01-18 02:36:49,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:49,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259941904] [2022-01-18 02:36:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:49,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:49,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:49,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259941904] [2022-01-18 02:36:49,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259941904] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:49,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433541118] [2022-01-18 02:36:49,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:36:49,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:49,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:49,178 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:49,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 02:36:49,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:36:49,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:49,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:36:49,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:49,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:49,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433541118] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:49,656 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:49,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 14 [2022-01-18 02:36:49,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760385317] [2022-01-18 02:36:49,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:49,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 02:36:49,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:49,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 02:36:49,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-01-18 02:36:49,657 INFO L87 Difference]: Start difference. First operand 2344 states and 6657 transitions. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:49,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:49,823 INFO L93 Difference]: Finished difference Result 5997 states and 17257 transitions. [2022-01-18 02:36:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 02:36:49,823 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:36:49,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:49,832 INFO L225 Difference]: With dead ends: 5997 [2022-01-18 02:36:49,833 INFO L226 Difference]: Without dead ends: 5679 [2022-01-18 02:36:49,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2022-01-18 02:36:49,833 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 369 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:49,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 894 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:36:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2022-01-18 02:36:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 3407. [2022-01-18 02:36:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3406 states have (on average 2.8755137991779214) internal successors, (9794), 3406 states have internal predecessors, (9794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 9794 transitions. [2022-01-18 02:36:49,894 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 9794 transitions. Word has length 72 [2022-01-18 02:36:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:49,894 INFO L470 AbstractCegarLoop]: Abstraction has 3407 states and 9794 transitions. [2022-01-18 02:36:49,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 9794 transitions. [2022-01-18 02:36:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 02:36:49,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:49,899 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:49,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-18 02:36:50,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:50,100 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:50,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:50,101 INFO L85 PathProgramCache]: Analyzing trace with hash -185719417, now seen corresponding path program 28 times [2022-01-18 02:36:50,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:50,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196427553] [2022-01-18 02:36:50,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:50,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:50,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:50,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196427553] [2022-01-18 02:36:50,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196427553] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:50,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237281057] [2022-01-18 02:36:50,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:36:50,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:50,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:50,192 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:50,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 02:36:50,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:36:50,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:50,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:36:50,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:50,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:50,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237281057] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:50,838 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:50,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 02:36:50,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490070736] [2022-01-18 02:36:50,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:50,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 02:36:50,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 02:36:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-01-18 02:36:50,839 INFO L87 Difference]: Start difference. First operand 3407 states and 9794 transitions. Second operand has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:52,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:52,120 INFO L93 Difference]: Finished difference Result 5692 states and 16101 transitions. [2022-01-18 02:36:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 02:36:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-18 02:36:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:52,128 INFO L225 Difference]: With dead ends: 5692 [2022-01-18 02:36:52,128 INFO L226 Difference]: Without dead ends: 5647 [2022-01-18 02:36:52,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2018 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=989, Invalid=5653, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 02:36:52,129 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 557 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:52,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 1905 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:36:52,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2022-01-18 02:36:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 4007. [2022-01-18 02:36:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 4006 states have (on average 2.8866699950074888) internal successors, (11564), 4006 states have internal predecessors, (11564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 11564 transitions. [2022-01-18 02:36:52,186 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 11564 transitions. Word has length 72 [2022-01-18 02:36:52,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:52,186 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 11564 transitions. [2022-01-18 02:36:52,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.44) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:52,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 11564 transitions. [2022-01-18 02:36:52,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:36:52,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:52,192 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:36:52,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:52,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-01-18 02:36:52,395 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:52,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1623433347, now seen corresponding path program 29 times [2022-01-18 02:36:52,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:52,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631800107] [2022-01-18 02:36:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:52,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:52,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:52,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631800107] [2022-01-18 02:36:52,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631800107] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:52,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316548551] [2022-01-18 02:36:52,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:36:52,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:52,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:52,522 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:52,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 02:36:52,575 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:36:52,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:52,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:36:52,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:52,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:53,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316548551] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:53,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:53,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 31 [2022-01-18 02:36:53,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182591038] [2022-01-18 02:36:53,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:53,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:36:53,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:53,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:36:53,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:36:53,192 INFO L87 Difference]: Start difference. First operand 4007 states and 11564 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:54,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:54,558 INFO L93 Difference]: Finished difference Result 7384 states and 21033 transitions. [2022-01-18 02:36:54,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 02:36:54,559 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:36:54,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:54,571 INFO L225 Difference]: With dead ends: 7384 [2022-01-18 02:36:54,571 INFO L226 Difference]: Without dead ends: 7339 [2022-01-18 02:36:54,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3050 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2222, Invalid=8080, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 02:36:54,573 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1104 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2722 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:54,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 2722 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:36:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2022-01-18 02:36:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 4149. [2022-01-18 02:36:54,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4149 states, 4148 states have (on average 2.882835101253616) internal successors, (11958), 4148 states have internal predecessors, (11958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 11958 transitions. [2022-01-18 02:36:54,653 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 11958 transitions. Word has length 77 [2022-01-18 02:36:54,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:54,653 INFO L470 AbstractCegarLoop]: Abstraction has 4149 states and 11958 transitions. [2022-01-18 02:36:54,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 11958 transitions. [2022-01-18 02:36:54,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:36:54,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:54,659 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:36:54,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-01-18 02:36:54,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:54,860 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:54,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1870223975, now seen corresponding path program 30 times [2022-01-18 02:36:54,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:54,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21266811] [2022-01-18 02:36:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:54,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:54,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:54,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21266811] [2022-01-18 02:36:54,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21266811] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:54,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020550676] [2022-01-18 02:36:54,966 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:36:54,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:54,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:54,967 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:54,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 02:36:55,025 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:36:55,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:55,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:36:55,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:55,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:55,546 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:55,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020550676] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:55,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:55,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 34 [2022-01-18 02:36:55,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032951649] [2022-01-18 02:36:55,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:55,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:36:55,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:55,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:36:55,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:36:55,548 INFO L87 Difference]: Start difference. First operand 4149 states and 11958 transitions. Second operand has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:57,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:57,175 INFO L93 Difference]: Finished difference Result 7597 states and 21455 transitions. [2022-01-18 02:36:57,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 02:36:57,175 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:36:57,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:57,186 INFO L225 Difference]: With dead ends: 7597 [2022-01-18 02:36:57,187 INFO L226 Difference]: Without dead ends: 7552 [2022-01-18 02:36:57,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3856 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1951, Invalid=10481, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 02:36:57,188 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 969 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:57,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 2809 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:36:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2022-01-18 02:36:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 4165. [2022-01-18 02:36:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 4164 states have (on average 2.882324687800192) internal successors, (12002), 4164 states have internal predecessors, (12002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 12002 transitions. [2022-01-18 02:36:57,261 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 12002 transitions. Word has length 77 [2022-01-18 02:36:57,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:57,261 INFO L470 AbstractCegarLoop]: Abstraction has 4165 states and 12002 transitions. [2022-01-18 02:36:57,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:57,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 12002 transitions. [2022-01-18 02:36:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:36:57,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:57,268 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:36:57,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:57,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:57,468 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:57,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:57,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1259138339, now seen corresponding path program 31 times [2022-01-18 02:36:57,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:57,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887866253] [2022-01-18 02:36:57,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:57,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:57,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:57,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887866253] [2022-01-18 02:36:57,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887866253] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:57,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092141049] [2022-01-18 02:36:57,586 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:36:57,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:57,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:57,587 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:57,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 02:36:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:57,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:36:57,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:57,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:58,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092141049] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:58,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:58,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 34 [2022-01-18 02:36:58,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737410797] [2022-01-18 02:36:58,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:58,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:36:58,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:58,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:36:58,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:36:58,274 INFO L87 Difference]: Start difference. First operand 4165 states and 12002 transitions. Second operand has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:59,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:59,976 INFO L93 Difference]: Finished difference Result 7442 states and 21104 transitions. [2022-01-18 02:36:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 02:36:59,977 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:36:59,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:59,986 INFO L225 Difference]: With dead ends: 7442 [2022-01-18 02:36:59,986 INFO L226 Difference]: Without dead ends: 7397 [2022-01-18 02:36:59,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3920 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2390, Invalid=10266, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 02:36:59,987 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 785 mSDsluCounter, 3229 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:59,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 3287 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:36:59,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7397 states. [2022-01-18 02:37:00,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7397 to 4181. [2022-01-18 02:37:00,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4181 states, 4180 states have (on average 2.881818181818182) internal successors, (12046), 4180 states have internal predecessors, (12046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4181 states to 4181 states and 12046 transitions. [2022-01-18 02:37:00,059 INFO L78 Accepts]: Start accepts. Automaton has 4181 states and 12046 transitions. Word has length 77 [2022-01-18 02:37:00,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:00,059 INFO L470 AbstractCegarLoop]: Abstraction has 4181 states and 12046 transitions. [2022-01-18 02:37:00,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.205882352941177) internal successors, (177), 34 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand 4181 states and 12046 transitions. [2022-01-18 02:37:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:00,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:00,065 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:00,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 02:37:00,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-18 02:37:00,265 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:00,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:00,266 INFO L85 PathProgramCache]: Analyzing trace with hash -962724129, now seen corresponding path program 32 times [2022-01-18 02:37:00,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:00,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321837873] [2022-01-18 02:37:00,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:00,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:00,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:00,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321837873] [2022-01-18 02:37:00,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321837873] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:00,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457733382] [2022-01-18 02:37:00,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:37:00,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:00,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:00,381 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:00,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 02:37:00,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:37:00,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:00,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:37:00,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:00,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:01,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457733382] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:01,043 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:01,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-01-18 02:37:01,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732534975] [2022-01-18 02:37:01,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:01,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 02:37:01,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:01,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 02:37:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2022-01-18 02:37:01,044 INFO L87 Difference]: Start difference. First operand 4181 states and 12046 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:03,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:03,957 INFO L93 Difference]: Finished difference Result 8898 states and 24913 transitions. [2022-01-18 02:37:03,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-18 02:37:03,958 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:03,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:03,970 INFO L225 Difference]: With dead ends: 8898 [2022-01-18 02:37:03,970 INFO L226 Difference]: Without dead ends: 8883 [2022-01-18 02:37:03,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7666 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3616, Invalid=18140, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 02:37:03,972 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 910 mSDsluCounter, 3876 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:03,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 3935 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:37:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2022-01-18 02:37:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 4189. [2022-01-18 02:37:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 2.883476599808978) internal successors, (12076), 4188 states have internal predecessors, (12076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 12076 transitions. [2022-01-18 02:37:04,056 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 12076 transitions. Word has length 77 [2022-01-18 02:37:04,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:04,056 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 12076 transitions. [2022-01-18 02:37:04,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:04,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 12076 transitions. [2022-01-18 02:37:04,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:04,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:04,061 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:04,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:04,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-01-18 02:37:04,271 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:04,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:04,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1793359353, now seen corresponding path program 33 times [2022-01-18 02:37:04,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:04,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846368017] [2022-01-18 02:37:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:04,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:04,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:04,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846368017] [2022-01-18 02:37:04,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846368017] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:04,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388544109] [2022-01-18 02:37:04,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:37:04,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:04,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:04,378 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:04,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 02:37:04,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 02:37:04,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:04,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:37:04,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:04,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:04,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388544109] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:04,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:04,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 33 [2022-01-18 02:37:04,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483862686] [2022-01-18 02:37:04,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:04,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:37:04,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:37:04,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:37:04,961 INFO L87 Difference]: Start difference. First operand 4189 states and 12076 transitions. Second operand has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:07,316 INFO L93 Difference]: Finished difference Result 8616 states and 24405 transitions. [2022-01-18 02:37:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-18 02:37:07,316 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:07,328 INFO L225 Difference]: With dead ends: 8616 [2022-01-18 02:37:07,328 INFO L226 Difference]: Without dead ends: 8592 [2022-01-18 02:37:07,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6282 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3113, Invalid=15247, Unknown=0, NotChecked=0, Total=18360 [2022-01-18 02:37:07,329 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 1541 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:07,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 2843 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:37:07,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2022-01-18 02:37:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 4189. [2022-01-18 02:37:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 4188 states have (on average 2.8815663801337155) internal successors, (12068), 4188 states have internal predecessors, (12068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 12068 transitions. [2022-01-18 02:37:07,406 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 12068 transitions. Word has length 77 [2022-01-18 02:37:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:07,406 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 12068 transitions. [2022-01-18 02:37:07,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 12068 transitions. [2022-01-18 02:37:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:07,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:07,411 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:07,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:07,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 02:37:07,612 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:07,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash 802013543, now seen corresponding path program 34 times [2022-01-18 02:37:07,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:07,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626333291] [2022-01-18 02:37:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:07,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:07,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:07,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626333291] [2022-01-18 02:37:07,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626333291] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:07,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690452249] [2022-01-18 02:37:07,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:37:07,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:07,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:07,727 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:07,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 02:37:07,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:37:07,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:07,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:37:07,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:08,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:08,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690452249] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:08,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:08,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 34 [2022-01-18 02:37:08,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151325331] [2022-01-18 02:37:08,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:08,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:37:08,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:08,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:37:08,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:37:08,369 INFO L87 Difference]: Start difference. First operand 4189 states and 12068 transitions. Second operand has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:09,241 INFO L93 Difference]: Finished difference Result 6740 states and 19159 transitions. [2022-01-18 02:37:09,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 02:37:09,241 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:09,250 INFO L225 Difference]: With dead ends: 6740 [2022-01-18 02:37:09,251 INFO L226 Difference]: Without dead ends: 6695 [2022-01-18 02:37:09,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1024, Invalid=4526, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 02:37:09,252 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 504 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:09,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 2642 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:37:09,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2022-01-18 02:37:09,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 4197. [2022-01-18 02:37:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4197 states, 4196 states have (on average 2.8813155386081983) internal successors, (12090), 4196 states have internal predecessors, (12090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 12090 transitions. [2022-01-18 02:37:09,314 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 12090 transitions. Word has length 77 [2022-01-18 02:37:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:09,314 INFO L470 AbstractCegarLoop]: Abstraction has 4197 states and 12090 transitions. [2022-01-18 02:37:09,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.264705882352941) internal successors, (179), 34 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 12090 transitions. [2022-01-18 02:37:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:09,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:09,319 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:09,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:09,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:09,520 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:09,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:09,520 INFO L85 PathProgramCache]: Analyzing trace with hash 190927907, now seen corresponding path program 35 times [2022-01-18 02:37:09,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:09,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788372192] [2022-01-18 02:37:09,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:09,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:09,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:09,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788372192] [2022-01-18 02:37:09,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788372192] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:09,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260993897] [2022-01-18 02:37:09,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:37:09,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:09,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:09,661 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:09,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 02:37:09,719 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:37:09,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:09,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:37:09,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:10,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:10,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260993897] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:10,388 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:10,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 35 [2022-01-18 02:37:10,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370016123] [2022-01-18 02:37:10,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:10,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 02:37:10,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:10,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 02:37:10,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:37:10,389 INFO L87 Difference]: Start difference. First operand 4197 states and 12090 transitions. Second operand has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:12,806 INFO L93 Difference]: Finished difference Result 10164 states and 28356 transitions. [2022-01-18 02:37:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 02:37:12,807 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:12,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:12,821 INFO L225 Difference]: With dead ends: 10164 [2022-01-18 02:37:12,821 INFO L226 Difference]: Without dead ends: 10014 [2022-01-18 02:37:12,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5513 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3441, Invalid=13851, Unknown=0, NotChecked=0, Total=17292 [2022-01-18 02:37:12,825 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 867 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:12,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 3418 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:37:12,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10014 states. [2022-01-18 02:37:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10014 to 4685. [2022-01-18 02:37:12,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4684 states have (on average 2.8881298035866783) internal successors, (13528), 4684 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 13528 transitions. [2022-01-18 02:37:12,911 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 13528 transitions. Word has length 77 [2022-01-18 02:37:12,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:12,912 INFO L470 AbstractCegarLoop]: Abstraction has 4685 states and 13528 transitions. [2022-01-18 02:37:12,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:12,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 13528 transitions. [2022-01-18 02:37:12,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:12,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:12,917 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:12,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 02:37:13,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 02:37:13,118 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:13,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:13,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2030934561, now seen corresponding path program 36 times [2022-01-18 02:37:13,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:13,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716549588] [2022-01-18 02:37:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:13,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:13,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:13,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716549588] [2022-01-18 02:37:13,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716549588] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:13,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662767347] [2022-01-18 02:37:13,230 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:37:13,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:13,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:13,231 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:13,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 02:37:13,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:37:13,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:13,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:37:13,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:13,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:13,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662767347] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:13,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:13,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-01-18 02:37:13,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121167990] [2022-01-18 02:37:13,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:13,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:37:13,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:13,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:37:13,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:37:13,931 INFO L87 Difference]: Start difference. First operand 4685 states and 13528 transitions. Second operand has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:17,224 INFO L93 Difference]: Finished difference Result 12402 states and 34548 transitions. [2022-01-18 02:37:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-18 02:37:17,224 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:17,243 INFO L225 Difference]: With dead ends: 12402 [2022-01-18 02:37:17,243 INFO L226 Difference]: Without dead ends: 12372 [2022-01-18 02:37:17,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8437 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3998, Invalid=19872, Unknown=0, NotChecked=0, Total=23870 [2022-01-18 02:37:17,244 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1027 mSDsluCounter, 3617 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:17,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 3683 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:37:17,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12372 states. [2022-01-18 02:37:17,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12372 to 5593. [2022-01-18 02:37:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5593 states, 5592 states have (on average 2.9393776824034337) internal successors, (16437), 5592 states have internal predecessors, (16437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5593 states to 5593 states and 16437 transitions. [2022-01-18 02:37:17,358 INFO L78 Accepts]: Start accepts. Automaton has 5593 states and 16437 transitions. Word has length 77 [2022-01-18 02:37:17,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:17,359 INFO L470 AbstractCegarLoop]: Abstraction has 5593 states and 16437 transitions. [2022-01-18 02:37:17,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states and 16437 transitions. [2022-01-18 02:37:17,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:17,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:17,366 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:17,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-01-18 02:37:17,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 02:37:17,567 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:17,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash 725148921, now seen corresponding path program 37 times [2022-01-18 02:37:17,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:17,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584297342] [2022-01-18 02:37:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:17,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:17,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:17,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584297342] [2022-01-18 02:37:17,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584297342] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:17,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439946511] [2022-01-18 02:37:17,678 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:37:17,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:17,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:17,679 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:17,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 02:37:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:17,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:37:17,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:17,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:18,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439946511] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:18,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:18,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-01-18 02:37:18,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667745163] [2022-01-18 02:37:18,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:18,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:37:18,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:18,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:37:18,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:37:18,312 INFO L87 Difference]: Start difference. First operand 5593 states and 16437 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:20,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:20,578 INFO L93 Difference]: Finished difference Result 9913 states and 27965 transitions. [2022-01-18 02:37:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 02:37:20,580 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:20,593 INFO L225 Difference]: With dead ends: 9913 [2022-01-18 02:37:20,594 INFO L226 Difference]: Without dead ends: 9865 [2022-01-18 02:37:20,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3747 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2189, Invalid=10021, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 02:37:20,595 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1046 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:20,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 3436 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:37:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9865 states. [2022-01-18 02:37:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9865 to 5585. [2022-01-18 02:37:20,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 5584 states have (on average 2.9367836676217767) internal successors, (16399), 5584 states have internal predecessors, (16399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 16399 transitions. [2022-01-18 02:37:20,690 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 16399 transitions. Word has length 77 [2022-01-18 02:37:20,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:20,690 INFO L470 AbstractCegarLoop]: Abstraction has 5585 states and 16399 transitions. [2022-01-18 02:37:20,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:20,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 16399 transitions. [2022-01-18 02:37:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:20,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:20,696 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:20,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-01-18 02:37:20,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:20,897 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:20,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:20,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1428795491, now seen corresponding path program 38 times [2022-01-18 02:37:20,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:20,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537802410] [2022-01-18 02:37:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:20,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:21,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:21,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537802410] [2022-01-18 02:37:21,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537802410] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:21,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249097354] [2022-01-18 02:37:21,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:37:21,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:21,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:21,024 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:21,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 02:37:21,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:37:21,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:21,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:37:21,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:21,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:21,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249097354] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:21,699 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:21,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 35 [2022-01-18 02:37:21,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77756200] [2022-01-18 02:37:21,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:21,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 02:37:21,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:21,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 02:37:21,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:37:21,700 INFO L87 Difference]: Start difference. First operand 5585 states and 16399 transitions. Second operand has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:23,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:23,219 INFO L93 Difference]: Finished difference Result 9863 states and 28180 transitions. [2022-01-18 02:37:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 02:37:23,219 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:23,234 INFO L225 Difference]: With dead ends: 9863 [2022-01-18 02:37:23,234 INFO L226 Difference]: Without dead ends: 9713 [2022-01-18 02:37:23,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1807, Invalid=8293, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 02:37:23,236 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 580 mSDsluCounter, 3398 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:23,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 3431 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:37:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9713 states. [2022-01-18 02:37:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9713 to 5681. [2022-01-18 02:37:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 5680 states have (on average 2.9350352112676057) internal successors, (16671), 5680 states have internal predecessors, (16671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 16671 transitions. [2022-01-18 02:37:23,347 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 16671 transitions. Word has length 77 [2022-01-18 02:37:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:23,347 INFO L470 AbstractCegarLoop]: Abstraction has 5681 states and 16671 transitions. [2022-01-18 02:37:23,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.114285714285714) internal successors, (179), 35 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:23,347 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 16671 transitions. [2022-01-18 02:37:23,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:23,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:23,354 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:23,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:23,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 02:37:23,554 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:23,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:23,555 INFO L85 PathProgramCache]: Analyzing trace with hash -793066977, now seen corresponding path program 39 times [2022-01-18 02:37:23,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:23,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395819638] [2022-01-18 02:37:23,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:23,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:23,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:23,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395819638] [2022-01-18 02:37:23,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395819638] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:23,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50801057] [2022-01-18 02:37:23,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:37:23,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:23,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:23,659 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:23,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 02:37:23,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:37:23,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:23,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:37:23,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:23,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:24,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50801057] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:24,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:24,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 34 [2022-01-18 02:37:24,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114952501] [2022-01-18 02:37:24,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:24,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:37:24,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:24,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:37:24,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:37:24,225 INFO L87 Difference]: Start difference. First operand 5681 states and 16671 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:27,544 INFO L93 Difference]: Finished difference Result 13788 states and 39217 transitions. [2022-01-18 02:37:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-18 02:37:27,545 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:27,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:27,598 INFO L225 Difference]: With dead ends: 13788 [2022-01-18 02:37:27,598 INFO L226 Difference]: Without dead ends: 13758 [2022-01-18 02:37:27,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10436 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4693, Invalid=23363, Unknown=0, NotChecked=0, Total=28056 [2022-01-18 02:37:27,599 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1391 mSDsluCounter, 4021 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 4056 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:27,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 4056 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:37:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13758 states. [2022-01-18 02:37:27,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13758 to 7369. [2022-01-18 02:37:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7369 states, 7368 states have (on average 2.9729913137893593) internal successors, (21905), 7368 states have internal predecessors, (21905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 21905 transitions. [2022-01-18 02:37:27,733 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 21905 transitions. Word has length 77 [2022-01-18 02:37:27,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:27,733 INFO L470 AbstractCegarLoop]: Abstraction has 7369 states and 21905 transitions. [2022-01-18 02:37:27,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:27,733 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 21905 transitions. [2022-01-18 02:37:27,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:27,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:27,743 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:27,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-01-18 02:37:27,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:27,951 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:27,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:27,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1963016505, now seen corresponding path program 40 times [2022-01-18 02:37:27,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:27,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461188491] [2022-01-18 02:37:27,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:27,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:28,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:28,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461188491] [2022-01-18 02:37:28,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461188491] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:28,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455302924] [2022-01-18 02:37:28,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:37:28,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:28,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:28,058 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:28,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 02:37:28,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:37:28,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:28,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:37:28,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:28,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:28,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455302924] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:28,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:28,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-01-18 02:37:28,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887016792] [2022-01-18 02:37:28,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:28,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:37:28,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:37:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:37:28,651 INFO L87 Difference]: Start difference. First operand 7369 states and 21905 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:30,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:30,450 INFO L93 Difference]: Finished difference Result 12790 states and 37282 transitions. [2022-01-18 02:37:30,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 02:37:30,451 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:30,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:30,473 INFO L225 Difference]: With dead ends: 12790 [2022-01-18 02:37:30,473 INFO L226 Difference]: Without dead ends: 12742 [2022-01-18 02:37:30,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2896 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1728, Invalid=8172, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 02:37:30,475 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 852 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:30,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 3702 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:37:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12742 states. [2022-01-18 02:37:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12742 to 7909. [2022-01-18 02:37:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7909 states, 7908 states have (on average 2.979514415781487) internal successors, (23562), 7908 states have internal predecessors, (23562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 23562 transitions. [2022-01-18 02:37:30,635 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 23562 transitions. Word has length 77 [2022-01-18 02:37:30,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:30,635 INFO L470 AbstractCegarLoop]: Abstraction has 7909 states and 23562 transitions. [2022-01-18 02:37:30,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:30,635 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 23562 transitions. [2022-01-18 02:37:30,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:30,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:30,646 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:30,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-01-18 02:37:30,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:30,859 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:30,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:30,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2104307295, now seen corresponding path program 41 times [2022-01-18 02:37:30,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:30,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226370417] [2022-01-18 02:37:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:30,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:30,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:30,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226370417] [2022-01-18 02:37:30,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226370417] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:30,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154131072] [2022-01-18 02:37:30,967 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:37:30,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:30,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:30,968 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:30,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 02:37:31,029 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:37:31,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:31,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:37:31,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:31,246 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:31,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:31,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154131072] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:31,572 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:31,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-01-18 02:37:31,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124071710] [2022-01-18 02:37:31,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:31,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 02:37:31,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:31,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 02:37:31,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2022-01-18 02:37:31,573 INFO L87 Difference]: Start difference. First operand 7909 states and 23562 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:33,412 INFO L93 Difference]: Finished difference Result 13751 states and 39970 transitions. [2022-01-18 02:37:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 02:37:33,413 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:33,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:33,439 INFO L225 Difference]: With dead ends: 13751 [2022-01-18 02:37:33,439 INFO L226 Difference]: Without dead ends: 13721 [2022-01-18 02:37:33,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1831, Invalid=9725, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 02:37:33,441 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1096 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:33,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 2725 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:37:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13721 states. [2022-01-18 02:37:33,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13721 to 8425. [2022-01-18 02:37:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8425 states, 8424 states have (on average 2.9768518518518516) internal successors, (25077), 8424 states have internal predecessors, (25077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8425 states to 8425 states and 25077 transitions. [2022-01-18 02:37:33,614 INFO L78 Accepts]: Start accepts. Automaton has 8425 states and 25077 transitions. Word has length 77 [2022-01-18 02:37:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:33,614 INFO L470 AbstractCegarLoop]: Abstraction has 8425 states and 25077 transitions. [2022-01-18 02:37:33,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 8425 states and 25077 transitions. [2022-01-18 02:37:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:33,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:33,625 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:33,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:33,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-01-18 02:37:33,825 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:33,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:33,826 INFO L85 PathProgramCache]: Analyzing trace with hash 565423481, now seen corresponding path program 42 times [2022-01-18 02:37:33,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:33,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3607593] [2022-01-18 02:37:33,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:33,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:33,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:33,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3607593] [2022-01-18 02:37:33,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3607593] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:33,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121050172] [2022-01-18 02:37:33,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:37:33,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:33,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:33,928 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:33,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 02:37:33,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 02:37:33,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:33,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:37:33,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:34,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:34,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121050172] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:34,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:34,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-01-18 02:37:34,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118642690] [2022-01-18 02:37:34,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:34,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 02:37:34,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 02:37:34,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2022-01-18 02:37:34,590 INFO L87 Difference]: Start difference. First operand 8425 states and 25077 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:35,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:35,819 INFO L93 Difference]: Finished difference Result 13035 states and 37943 transitions. [2022-01-18 02:37:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 02:37:35,819 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:35,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:35,843 INFO L225 Difference]: With dead ends: 13035 [2022-01-18 02:37:35,843 INFO L226 Difference]: Without dead ends: 12987 [2022-01-18 02:37:35,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1076, Invalid=5244, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 02:37:35,845 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 853 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:35,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 2703 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:37:35,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2022-01-18 02:37:35,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 8073. [2022-01-18 02:37:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8073 states, 8072 states have (on average 2.977824578790882) internal successors, (24037), 8072 states have internal predecessors, (24037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8073 states to 8073 states and 24037 transitions. [2022-01-18 02:37:36,001 INFO L78 Accepts]: Start accepts. Automaton has 8073 states and 24037 transitions. Word has length 77 [2022-01-18 02:37:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:36,001 INFO L470 AbstractCegarLoop]: Abstraction has 8073 states and 24037 transitions. [2022-01-18 02:37:36,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8073 states and 24037 transitions. [2022-01-18 02:37:36,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:36,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:36,012 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:36,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-01-18 02:37:36,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 02:37:36,212 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:36,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:36,213 INFO L85 PathProgramCache]: Analyzing trace with hash -940442981, now seen corresponding path program 43 times [2022-01-18 02:37:36,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:36,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451743363] [2022-01-18 02:37:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:36,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:36,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:36,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451743363] [2022-01-18 02:37:36,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451743363] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:36,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885869845] [2022-01-18 02:37:36,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:37:36,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:36,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:36,329 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:36,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 02:37:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:36,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:37:36,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:36,629 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:36,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:36,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885869845] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:36,951 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:36,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-01-18 02:37:36,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782437914] [2022-01-18 02:37:36,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:36,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 02:37:36,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 02:37:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2022-01-18 02:37:36,952 INFO L87 Difference]: Start difference. First operand 8073 states and 24037 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:37,573 INFO L93 Difference]: Finished difference Result 9873 states and 29356 transitions. [2022-01-18 02:37:37,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 02:37:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:37,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:37,589 INFO L225 Difference]: With dead ends: 9873 [2022-01-18 02:37:37,589 INFO L226 Difference]: Without dead ends: 9837 [2022-01-18 02:37:37,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=477, Invalid=2279, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 02:37:37,590 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 618 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:37,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 2079 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:37:37,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2022-01-18 02:37:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 8077. [2022-01-18 02:37:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8077 states, 8076 states have (on average 2.9777117384843983) internal successors, (24048), 8076 states have internal predecessors, (24048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8077 states to 8077 states and 24048 transitions. [2022-01-18 02:37:37,728 INFO L78 Accepts]: Start accepts. Automaton has 8077 states and 24048 transitions. Word has length 77 [2022-01-18 02:37:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:37,728 INFO L470 AbstractCegarLoop]: Abstraction has 8077 states and 24048 transitions. [2022-01-18 02:37:37,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 8077 states and 24048 transitions. [2022-01-18 02:37:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:37,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:37,739 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:37,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-01-18 02:37:37,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 02:37:37,940 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:37,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1822451929, now seen corresponding path program 44 times [2022-01-18 02:37:37,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:37,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653201868] [2022-01-18 02:37:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:37,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:38,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:38,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653201868] [2022-01-18 02:37:38,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653201868] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:38,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116554051] [2022-01-18 02:37:38,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:37:38,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:38,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:38,082 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:38,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 02:37:38,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:37:38,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:38,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:37:38,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:38,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:38,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116554051] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:38,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:38,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 35 [2022-01-18 02:37:38,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331198664] [2022-01-18 02:37:38,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:38,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 02:37:38,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:38,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 02:37:38,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:37:38,790 INFO L87 Difference]: Start difference. First operand 8077 states and 24048 transitions. Second operand has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:41,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:41,115 INFO L93 Difference]: Finished difference Result 14182 states and 41355 transitions. [2022-01-18 02:37:41,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-18 02:37:41,115 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:41,141 INFO L225 Difference]: With dead ends: 14182 [2022-01-18 02:37:41,142 INFO L226 Difference]: Without dead ends: 14107 [2022-01-18 02:37:41,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6721 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3704, Invalid=15756, Unknown=0, NotChecked=0, Total=19460 [2022-01-18 02:37:41,143 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 783 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:41,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 3065 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:37:41,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14107 states. [2022-01-18 02:37:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14107 to 8733. [2022-01-18 02:37:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8733 states, 8732 states have (on average 2.977553825011452) internal successors, (26000), 8732 states have internal predecessors, (26000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8733 states to 8733 states and 26000 transitions. [2022-01-18 02:37:41,329 INFO L78 Accepts]: Start accepts. Automaton has 8733 states and 26000 transitions. Word has length 77 [2022-01-18 02:37:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:41,329 INFO L470 AbstractCegarLoop]: Abstraction has 8733 states and 26000 transitions. [2022-01-18 02:37:41,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.142857142857143) internal successors, (180), 35 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 8733 states and 26000 transitions. [2022-01-18 02:37:41,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:41,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:41,341 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:41,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:41,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:41,542 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:41,542 INFO L85 PathProgramCache]: Analyzing trace with hash -520158177, now seen corresponding path program 45 times [2022-01-18 02:37:41,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:41,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58848450] [2022-01-18 02:37:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:41,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:41,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:41,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58848450] [2022-01-18 02:37:41,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58848450] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:41,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942013375] [2022-01-18 02:37:41,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:37:41,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:41,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:41,654 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:41,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 02:37:41,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:37:41,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:41,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:37:41,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:41,964 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:41,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:42,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942013375] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:42,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:42,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 35 [2022-01-18 02:37:42,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44263507] [2022-01-18 02:37:42,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:42,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 02:37:42,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:42,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 02:37:42,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:37:42,224 INFO L87 Difference]: Start difference. First operand 8733 states and 26000 transitions. Second operand has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:45,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:45,948 INFO L93 Difference]: Finished difference Result 18496 states and 53581 transitions. [2022-01-18 02:37:45,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-18 02:37:45,948 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:45,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:45,982 INFO L225 Difference]: With dead ends: 18496 [2022-01-18 02:37:45,982 INFO L226 Difference]: Without dead ends: 18466 [2022-01-18 02:37:45,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12734 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=5678, Invalid=27994, Unknown=0, NotChecked=0, Total=33672 [2022-01-18 02:37:45,986 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 1647 mSDsluCounter, 3559 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:45,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 3672 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:37:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18466 states. [2022-01-18 02:37:46,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18466 to 11413. [2022-01-18 02:37:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11413 states, 11412 states have (on average 2.997721696459867) internal successors, (34210), 11412 states have internal predecessors, (34210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11413 states to 11413 states and 34210 transitions. [2022-01-18 02:37:46,229 INFO L78 Accepts]: Start accepts. Automaton has 11413 states and 34210 transitions. Word has length 77 [2022-01-18 02:37:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:46,229 INFO L470 AbstractCegarLoop]: Abstraction has 11413 states and 34210 transitions. [2022-01-18 02:37:46,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.857142857142857) internal successors, (170), 35 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 11413 states and 34210 transitions. [2022-01-18 02:37:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:46,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:46,246 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:46,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:46,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-18 02:37:46,446 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2059041991, now seen corresponding path program 46 times [2022-01-18 02:37:46,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:46,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569399142] [2022-01-18 02:37:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:46,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:46,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:46,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569399142] [2022-01-18 02:37:46,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569399142] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:46,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118851414] [2022-01-18 02:37:46,551 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:37:46,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:46,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:46,554 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:46,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 02:37:46,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:37:46,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:46,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:37:46,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:46,826 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:46,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:47,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118851414] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:47,146 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:47,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-01-18 02:37:47,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269881433] [2022-01-18 02:37:47,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:47,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:37:47,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:47,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:37:47,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:37:47,147 INFO L87 Difference]: Start difference. First operand 11413 states and 34210 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:49,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:49,227 INFO L93 Difference]: Finished difference Result 17859 states and 52232 transitions. [2022-01-18 02:37:49,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 02:37:49,228 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:49,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:49,261 INFO L225 Difference]: With dead ends: 17859 [2022-01-18 02:37:49,261 INFO L226 Difference]: Without dead ends: 17787 [2022-01-18 02:37:49,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3883 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2109, Invalid=10323, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 02:37:49,263 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 1077 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:49,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1077 Valid, 2985 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:37:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17787 states. [2022-01-18 02:37:49,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17787 to 11969. [2022-01-18 02:37:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11969 states, 11968 states have (on average 3.005932486631016) internal successors, (35975), 11968 states have internal predecessors, (35975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11969 states to 11969 states and 35975 transitions. [2022-01-18 02:37:49,491 INFO L78 Accepts]: Start accepts. Automaton has 11969 states and 35975 transitions. Word has length 77 [2022-01-18 02:37:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:49,491 INFO L470 AbstractCegarLoop]: Abstraction has 11969 states and 35975 transitions. [2022-01-18 02:37:49,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:49,492 INFO L276 IsEmpty]: Start isEmpty. Operand 11969 states and 35975 transitions. [2022-01-18 02:37:49,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:49,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:49,509 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:49,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:49,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 02:37:49,709 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash 730058843, now seen corresponding path program 47 times [2022-01-18 02:37:49,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:49,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448109867] [2022-01-18 02:37:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:49,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:49,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:49,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448109867] [2022-01-18 02:37:49,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448109867] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:49,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140208180] [2022-01-18 02:37:49,822 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:37:49,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:49,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:49,824 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:49,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 02:37:49,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 02:37:49,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:49,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:37:49,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:50,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:50,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140208180] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:50,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:50,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-01-18 02:37:50,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097906303] [2022-01-18 02:37:50,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:50,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 02:37:50,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:50,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 02:37:50,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2022-01-18 02:37:50,319 INFO L87 Difference]: Start difference. First operand 11969 states and 35975 transitions. Second operand has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:51,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:51,827 INFO L93 Difference]: Finished difference Result 22953 states and 67933 transitions. [2022-01-18 02:37:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 02:37:51,828 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:51,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:51,873 INFO L225 Difference]: With dead ends: 22953 [2022-01-18 02:37:51,873 INFO L226 Difference]: Without dead ends: 22881 [2022-01-18 02:37:51,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3269 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1519, Invalid=8581, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 02:37:51,875 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 624 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:51,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 2474 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:37:51,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22881 states. [2022-01-18 02:37:52,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22881 to 12161. [2022-01-18 02:37:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12161 states, 12160 states have (on average 3.0045230263157894) internal successors, (36535), 12160 states have internal predecessors, (36535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12161 states to 12161 states and 36535 transitions. [2022-01-18 02:37:52,152 INFO L78 Accepts]: Start accepts. Automaton has 12161 states and 36535 transitions. Word has length 77 [2022-01-18 02:37:52,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:52,152 INFO L470 AbstractCegarLoop]: Abstraction has 12161 states and 36535 transitions. [2022-01-18 02:37:52,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 29 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:52,152 INFO L276 IsEmpty]: Start isEmpty. Operand 12161 states and 36535 transitions. [2022-01-18 02:37:52,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:52,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:52,169 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:52,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:52,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:52,369 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:52,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:52,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1998644761, now seen corresponding path program 48 times [2022-01-18 02:37:52,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:52,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684643087] [2022-01-18 02:37:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:52,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:52,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:52,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684643087] [2022-01-18 02:37:52,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684643087] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:52,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124263280] [2022-01-18 02:37:52,488 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:37:52,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:52,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:52,489 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:52,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 02:37:52,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:37:52,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:52,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:37:52,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:52,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:53,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124263280] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:53,117 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:53,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 32 [2022-01-18 02:37:53,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996883049] [2022-01-18 02:37:53,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:53,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:37:53,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:53,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:37:53,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:37:53,118 INFO L87 Difference]: Start difference. First operand 12161 states and 36535 transitions. Second operand has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:57,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:57,935 INFO L93 Difference]: Finished difference Result 29756 states and 87065 transitions. [2022-01-18 02:37:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2022-01-18 02:37:57,936 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:37:57,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:57,996 INFO L225 Difference]: With dead ends: 29756 [2022-01-18 02:37:57,997 INFO L226 Difference]: Without dead ends: 29411 [2022-01-18 02:37:57,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23300 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=8315, Invalid=49045, Unknown=0, NotChecked=0, Total=57360 [2022-01-18 02:37:58,000 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1667 mSDsluCounter, 3657 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:58,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1667 Valid, 3723 Invalid, 2307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:37:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29411 states. [2022-01-18 02:37:58,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29411 to 15768. [2022-01-18 02:37:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15768 states, 15767 states have (on average 2.986427348259022) internal successors, (47087), 15767 states have internal predecessors, (47087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15768 states to 15768 states and 47087 transitions. [2022-01-18 02:37:58,356 INFO L78 Accepts]: Start accepts. Automaton has 15768 states and 47087 transitions. Word has length 77 [2022-01-18 02:37:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:58,356 INFO L470 AbstractCegarLoop]: Abstraction has 15768 states and 47087 transitions. [2022-01-18 02:37:58,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0625) internal successors, (162), 32 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 15768 states and 47087 transitions. [2022-01-18 02:37:58,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:37:58,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:58,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:37:58,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-01-18 02:37:58,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-01-18 02:37:58,579 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:58,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:58,579 INFO L85 PathProgramCache]: Analyzing trace with hash -72915937, now seen corresponding path program 49 times [2022-01-18 02:37:58,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:58,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284612857] [2022-01-18 02:37:58,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:58,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:58,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:58,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284612857] [2022-01-18 02:37:58,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284612857] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:58,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261751174] [2022-01-18 02:37:58,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:37:58,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:58,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:58,685 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:58,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 02:37:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:58,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:37:58,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:58,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:59,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261751174] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:59,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:59,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-01-18 02:37:59,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974076603] [2022-01-18 02:37:59,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:59,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:37:59,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:59,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:37:59,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:37:59,309 INFO L87 Difference]: Start difference. First operand 15768 states and 47087 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:01,042 INFO L93 Difference]: Finished difference Result 21164 states and 62515 transitions. [2022-01-18 02:38:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 02:38:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:01,087 INFO L225 Difference]: With dead ends: 21164 [2022-01-18 02:38:01,088 INFO L226 Difference]: Without dead ends: 21128 [2022-01-18 02:38:01,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3027 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1680, Invalid=8220, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 02:38:01,089 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1180 mSDsluCounter, 3207 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:01,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 3307 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:38:01,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21128 states. [2022-01-18 02:38:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21128 to 16764. [2022-01-18 02:38:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16764 states, 16763 states have (on average 2.9952872397542207) internal successors, (50210), 16763 states have internal predecessors, (50210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:01,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 50210 transitions. [2022-01-18 02:38:01,502 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 50210 transitions. Word has length 77 [2022-01-18 02:38:01,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:01,502 INFO L470 AbstractCegarLoop]: Abstraction has 16764 states and 50210 transitions. [2022-01-18 02:38:01,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 50210 transitions. [2022-01-18 02:38:01,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:01,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:01,530 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:01,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-01-18 02:38:01,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:01,746 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:01,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1176482649, now seen corresponding path program 50 times [2022-01-18 02:38:01,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:01,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173785473] [2022-01-18 02:38:01,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:01,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:01,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:01,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173785473] [2022-01-18 02:38:01,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173785473] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:01,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152598758] [2022-01-18 02:38:01,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:38:01,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:01,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:01,856 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:01,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 02:38:01,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:38:01,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:01,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:38:01,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:02,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:02,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152598758] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:02,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:02,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-01-18 02:38:02,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408704325] [2022-01-18 02:38:02,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:02,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 02:38:02,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:02,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 02:38:02,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2022-01-18 02:38:02,479 INFO L87 Difference]: Start difference. First operand 16764 states and 50210 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:05,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:05,803 INFO L93 Difference]: Finished difference Result 32421 states and 95423 transitions. [2022-01-18 02:38:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-18 02:38:05,804 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:05,864 INFO L225 Difference]: With dead ends: 32421 [2022-01-18 02:38:05,864 INFO L226 Difference]: Without dead ends: 32376 [2022-01-18 02:38:05,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12105 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5348, Invalid=25804, Unknown=0, NotChecked=0, Total=31152 [2022-01-18 02:38:05,865 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 1398 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:05,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1398 Valid, 3258 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:38:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32376 states. [2022-01-18 02:38:06,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32376 to 19893. [2022-01-18 02:38:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19893 states, 19892 states have (on average 3.001105972250151) internal successors, (59698), 19892 states have internal predecessors, (59698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:06,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19893 states to 19893 states and 59698 transitions. [2022-01-18 02:38:06,291 INFO L78 Accepts]: Start accepts. Automaton has 19893 states and 59698 transitions. Word has length 77 [2022-01-18 02:38:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:06,291 INFO L470 AbstractCegarLoop]: Abstraction has 19893 states and 59698 transitions. [2022-01-18 02:38:06,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:06,291 INFO L276 IsEmpty]: Start isEmpty. Operand 19893 states and 59698 transitions. [2022-01-18 02:38:06,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:06,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:06,321 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:06,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-01-18 02:38:06,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-01-18 02:38:06,522 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:06,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:06,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1579600833, now seen corresponding path program 51 times [2022-01-18 02:38:06,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:06,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255364446] [2022-01-18 02:38:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:06,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:06,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:06,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255364446] [2022-01-18 02:38:06,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255364446] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:06,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417295311] [2022-01-18 02:38:06,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:38:06,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:06,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:06,609 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:06,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 02:38:06,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 02:38:06,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:06,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:38:06,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:06,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:07,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417295311] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:07,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:07,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 35 [2022-01-18 02:38:07,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358865196] [2022-01-18 02:38:07,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:07,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 02:38:07,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:07,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 02:38:07,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:38:07,143 INFO L87 Difference]: Start difference. First operand 19893 states and 59698 transitions. Second operand has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:12,532 INFO L93 Difference]: Finished difference Result 36557 states and 108426 transitions. [2022-01-18 02:38:12,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-01-18 02:38:12,532 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:12,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:12,598 INFO L225 Difference]: With dead ends: 36557 [2022-01-18 02:38:12,599 INFO L226 Difference]: Without dead ends: 36509 [2022-01-18 02:38:12,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24666 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9606, Invalid=51156, Unknown=0, NotChecked=0, Total=60762 [2022-01-18 02:38:12,601 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 2452 mSDsluCounter, 4253 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2452 SdHoareTripleChecker+Valid, 4324 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:12,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2452 Valid, 4324 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:38:12,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36509 states. [2022-01-18 02:38:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36509 to 20333. [2022-01-18 02:38:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20333 states, 20332 states have (on average 2.9956718473342514) internal successors, (60908), 20332 states have internal predecessors, (60908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20333 states to 20333 states and 60908 transitions. [2022-01-18 02:38:13,095 INFO L78 Accepts]: Start accepts. Automaton has 20333 states and 60908 transitions. Word has length 77 [2022-01-18 02:38:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:13,095 INFO L470 AbstractCegarLoop]: Abstraction has 20333 states and 60908 transitions. [2022-01-18 02:38:13,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.628571428571429) internal successors, (162), 35 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 20333 states and 60908 transitions. [2022-01-18 02:38:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:13,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:13,123 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:13,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-01-18 02:38:13,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-01-18 02:38:13,324 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash 73734371, now seen corresponding path program 52 times [2022-01-18 02:38:13,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:13,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063162524] [2022-01-18 02:38:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:13,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:13,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:13,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063162524] [2022-01-18 02:38:13,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063162524] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:13,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788498356] [2022-01-18 02:38:13,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:38:13,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:13,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:13,431 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:13,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 02:38:13,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:38:13,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:13,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:38:13,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:13,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:14,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788498356] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:14,017 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:14,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 30 [2022-01-18 02:38:14,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902328152] [2022-01-18 02:38:14,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:14,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 02:38:14,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:14,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 02:38:14,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2022-01-18 02:38:14,018 INFO L87 Difference]: Start difference. First operand 20333 states and 60908 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:16,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:16,164 INFO L93 Difference]: Finished difference Result 33381 states and 99082 transitions. [2022-01-18 02:38:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 02:38:16,164 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:16,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:16,239 INFO L225 Difference]: With dead ends: 33381 [2022-01-18 02:38:16,239 INFO L226 Difference]: Without dead ends: 33345 [2022-01-18 02:38:16,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4532 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2306, Invalid=11266, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 02:38:16,241 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1240 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:16,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 2882 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:38:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33345 states. [2022-01-18 02:38:16,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33345 to 20209. [2022-01-18 02:38:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20209 states, 20208 states have (on average 2.9928246239113223) internal successors, (60479), 20208 states have internal predecessors, (60479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20209 states to 20209 states and 60479 transitions. [2022-01-18 02:38:16,731 INFO L78 Accepts]: Start accepts. Automaton has 20209 states and 60479 transitions. Word has length 77 [2022-01-18 02:38:16,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:16,731 INFO L470 AbstractCegarLoop]: Abstraction has 20209 states and 60479 transitions. [2022-01-18 02:38:16,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 20209 states and 60479 transitions. [2022-01-18 02:38:16,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:16,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:16,760 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:16,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-01-18 02:38:16,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:16,960 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:16,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:16,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1917390069, now seen corresponding path program 53 times [2022-01-18 02:38:16,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:16,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439434584] [2022-01-18 02:38:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:16,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:17,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:17,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439434584] [2022-01-18 02:38:17,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439434584] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:17,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533326961] [2022-01-18 02:38:17,053 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:38:17,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:17,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:17,054 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:17,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 02:38:17,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 02:38:17,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:17,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:38:17,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:17,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:17,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533326961] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:17,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:17,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 28 [2022-01-18 02:38:17,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376194343] [2022-01-18 02:38:17,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:17,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 02:38:17,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 02:38:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-01-18 02:38:17,624 INFO L87 Difference]: Start difference. First operand 20209 states and 60479 transitions. Second operand has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:19,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:19,714 INFO L93 Difference]: Finished difference Result 38522 states and 113262 transitions. [2022-01-18 02:38:19,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-18 02:38:19,714 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:19,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:19,791 INFO L225 Difference]: With dead ends: 38522 [2022-01-18 02:38:19,791 INFO L226 Difference]: Without dead ends: 38474 [2022-01-18 02:38:19,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5568 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2672, Invalid=13840, Unknown=0, NotChecked=0, Total=16512 [2022-01-18 02:38:19,794 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 1135 mSDsluCounter, 3286 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:19,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 3368 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:38:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38474 states. [2022-01-18 02:38:20,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38474 to 20593. [2022-01-18 02:38:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20593 states, 20592 states have (on average 2.996649184149184) internal successors, (61707), 20592 states have internal predecessors, (61707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20593 states to 20593 states and 61707 transitions. [2022-01-18 02:38:20,429 INFO L78 Accepts]: Start accepts. Automaton has 20593 states and 61707 transitions. Word has length 77 [2022-01-18 02:38:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:20,429 INFO L470 AbstractCegarLoop]: Abstraction has 20593 states and 61707 transitions. [2022-01-18 02:38:20,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand 20593 states and 61707 transitions. [2022-01-18 02:38:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:20,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:20,457 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:20,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-01-18 02:38:20,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:20,659 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:20,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1473791071, now seen corresponding path program 54 times [2022-01-18 02:38:20,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:20,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896576816] [2022-01-18 02:38:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:20,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:20,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:20,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896576816] [2022-01-18 02:38:20,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896576816] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:20,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821906181] [2022-01-18 02:38:20,768 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:38:20,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:20,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:20,769 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:20,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 02:38:20,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:38:20,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:20,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:38:20,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:21,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:21,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821906181] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:21,357 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:21,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-01-18 02:38:21,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931687139] [2022-01-18 02:38:21,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:21,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:38:21,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:21,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:38:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:38:21,358 INFO L87 Difference]: Start difference. First operand 20593 states and 61707 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:24,128 INFO L93 Difference]: Finished difference Result 37942 states and 113081 transitions. [2022-01-18 02:38:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-01-18 02:38:24,128 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:24,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:24,217 INFO L225 Difference]: With dead ends: 37942 [2022-01-18 02:38:24,217 INFO L226 Difference]: Without dead ends: 37912 [2022-01-18 02:38:24,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7712 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3953, Invalid=18099, Unknown=0, NotChecked=0, Total=22052 [2022-01-18 02:38:24,220 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1005 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:24,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 2974 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:38:24,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37912 states. [2022-01-18 02:38:24,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37912 to 27933. [2022-01-18 02:38:24,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27933 states, 27932 states have (on average 3.0211943290849206) internal successors, (84388), 27932 states have internal predecessors, (84388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27933 states to 27933 states and 84388 transitions. [2022-01-18 02:38:24,888 INFO L78 Accepts]: Start accepts. Automaton has 27933 states and 84388 transitions. Word has length 77 [2022-01-18 02:38:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:24,888 INFO L470 AbstractCegarLoop]: Abstraction has 27933 states and 84388 transitions. [2022-01-18 02:38:24,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 27933 states and 84388 transitions. [2022-01-18 02:38:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:24,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:24,932 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:24,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-01-18 02:38:25,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:25,139 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash -65092743, now seen corresponding path program 55 times [2022-01-18 02:38:25,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:25,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631337939] [2022-01-18 02:38:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:25,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:25,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:25,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631337939] [2022-01-18 02:38:25,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631337939] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:25,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917651637] [2022-01-18 02:38:25,230 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:38:25,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:25,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:25,231 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:25,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 02:38:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:25,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:38:25,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:25,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:25,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917651637] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:25,786 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:25,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-01-18 02:38:25,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6813927] [2022-01-18 02:38:25,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:25,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:38:25,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:25,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:38:25,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:38:25,787 INFO L87 Difference]: Start difference. First operand 27933 states and 84388 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:27,793 INFO L93 Difference]: Finished difference Result 35041 states and 104489 transitions. [2022-01-18 02:38:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 02:38:27,793 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:27,879 INFO L225 Difference]: With dead ends: 35041 [2022-01-18 02:38:27,879 INFO L226 Difference]: Without dead ends: 34945 [2022-01-18 02:38:27,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3492 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1987, Invalid=9143, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 02:38:27,881 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 850 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 3500 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:27,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 3500 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:38:27,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34945 states. [2022-01-18 02:38:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34945 to 24729. [2022-01-18 02:38:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24729 states, 24728 states have (on average 3.0120106761565837) internal successors, (74481), 24728 states have internal predecessors, (74481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:28,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24729 states to 24729 states and 74481 transitions. [2022-01-18 02:38:28,477 INFO L78 Accepts]: Start accepts. Automaton has 24729 states and 74481 transitions. Word has length 77 [2022-01-18 02:38:28,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:28,477 INFO L470 AbstractCegarLoop]: Abstraction has 24729 states and 74481 transitions. [2022-01-18 02:38:28,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:28,477 INFO L276 IsEmpty]: Start isEmpty. Operand 24729 states and 74481 transitions. [2022-01-18 02:38:28,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:28,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:28,512 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:28,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-18 02:38:28,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-18 02:38:28,713 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:28,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:28,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1921033311, now seen corresponding path program 56 times [2022-01-18 02:38:28,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:28,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117087781] [2022-01-18 02:38:28,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:28,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:28,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:28,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117087781] [2022-01-18 02:38:28,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117087781] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:28,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373169622] [2022-01-18 02:38:28,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:38:28,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:28,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:28,814 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:28,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 02:38:28,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:38:28,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:28,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:38:28,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:29,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:29,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373169622] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:29,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:29,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-01-18 02:38:29,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043242910] [2022-01-18 02:38:29,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:29,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:38:29,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:38:29,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:38:29,333 INFO L87 Difference]: Start difference. First operand 24729 states and 74481 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:30,688 INFO L93 Difference]: Finished difference Result 29827 states and 89157 transitions. [2022-01-18 02:38:30,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 02:38:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:30,744 INFO L225 Difference]: With dead ends: 29827 [2022-01-18 02:38:30,744 INFO L226 Difference]: Without dead ends: 29755 [2022-01-18 02:38:30,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1974 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1188, Invalid=5454, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 02:38:30,745 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 883 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:30,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 2355 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:38:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29755 states. [2022-01-18 02:38:31,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29755 to 24853. [2022-01-18 02:38:31,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24853 states, 24852 states have (on average 3.011186222436826) internal successors, (74834), 24852 states have internal predecessors, (74834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:31,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24853 states to 24853 states and 74834 transitions. [2022-01-18 02:38:31,193 INFO L78 Accepts]: Start accepts. Automaton has 24853 states and 74834 transitions. Word has length 77 [2022-01-18 02:38:31,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:31,194 INFO L470 AbstractCegarLoop]: Abstraction has 24853 states and 74834 transitions. [2022-01-18 02:38:31,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:31,194 INFO L276 IsEmpty]: Start isEmpty. Operand 24853 states and 74834 transitions. [2022-01-18 02:38:31,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:31,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:31,233 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:31,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-01-18 02:38:31,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 02:38:31,434 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:31,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash 817466599, now seen corresponding path program 57 times [2022-01-18 02:38:31,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:31,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855771804] [2022-01-18 02:38:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:31,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:31,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:31,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855771804] [2022-01-18 02:38:31,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855771804] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:31,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489309463] [2022-01-18 02:38:31,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:38:31,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:31,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:31,524 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:31,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 02:38:31,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 02:38:31,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:31,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:38:31,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:31,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:32,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489309463] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:32,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:32,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 36 [2022-01-18 02:38:32,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948899004] [2022-01-18 02:38:32,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:32,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:38:32,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:32,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:38:32,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:38:32,080 INFO L87 Difference]: Start difference. First operand 24853 states and 74834 transitions. Second operand has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:36,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:36,362 INFO L93 Difference]: Finished difference Result 43877 states and 130351 transitions. [2022-01-18 02:38:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-01-18 02:38:36,363 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:36,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:36,457 INFO L225 Difference]: With dead ends: 43877 [2022-01-18 02:38:36,457 INFO L226 Difference]: Without dead ends: 43787 [2022-01-18 02:38:36,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17610 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=9170, Invalid=35562, Unknown=0, NotChecked=0, Total=44732 [2022-01-18 02:38:36,460 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1702 mSDsluCounter, 4179 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:36,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 4165 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:38:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43787 states. [2022-01-18 02:38:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43787 to 26781. [2022-01-18 02:38:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26781 states, 26780 states have (on average 3.0019417475728156) internal successors, (80392), 26780 states have internal predecessors, (80392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26781 states to 26781 states and 80392 transitions. [2022-01-18 02:38:37,111 INFO L78 Accepts]: Start accepts. Automaton has 26781 states and 80392 transitions. Word has length 77 [2022-01-18 02:38:37,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:37,111 INFO L470 AbstractCegarLoop]: Abstraction has 26781 states and 80392 transitions. [2022-01-18 02:38:37,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 26781 states and 80392 transitions. [2022-01-18 02:38:37,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:37,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:37,158 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:37,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 02:38:37,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:37,358 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:37,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:37,358 INFO L85 PathProgramCache]: Analyzing trace with hash -721417215, now seen corresponding path program 58 times [2022-01-18 02:38:37,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:37,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049493124] [2022-01-18 02:38:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:37,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:37,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:37,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049493124] [2022-01-18 02:38:37,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049493124] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:37,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846011169] [2022-01-18 02:38:37,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:38:37,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:37,457 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:37,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 02:38:37,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:38:37,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:37,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:38:37,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:37,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:37,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846011169] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:37,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:37,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 31 [2022-01-18 02:38:37,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635318715] [2022-01-18 02:38:37,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:37,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:38:37,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:38:37,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:38:37,974 INFO L87 Difference]: Start difference. First operand 26781 states and 80392 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:39,690 INFO L93 Difference]: Finished difference Result 40700 states and 121546 transitions. [2022-01-18 02:38:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 02:38:39,691 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:39,773 INFO L225 Difference]: With dead ends: 40700 [2022-01-18 02:38:39,773 INFO L226 Difference]: Without dead ends: 40628 [2022-01-18 02:38:39,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2453, Invalid=9319, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 02:38:39,775 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 1075 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:39,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 2152 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:38:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40628 states. [2022-01-18 02:38:40,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40628 to 26557. [2022-01-18 02:38:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26557 states, 26556 states have (on average 3.0055731284832055) internal successors, (79816), 26556 states have internal predecessors, (79816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26557 states to 26557 states and 79816 transitions. [2022-01-18 02:38:40,378 INFO L78 Accepts]: Start accepts. Automaton has 26557 states and 79816 transitions. Word has length 77 [2022-01-18 02:38:40,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:40,378 INFO L470 AbstractCegarLoop]: Abstraction has 26557 states and 79816 transitions. [2022-01-18 02:38:40,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:40,378 INFO L276 IsEmpty]: Start isEmpty. Operand 26557 states and 79816 transitions. [2022-01-18 02:38:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:40,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:40,421 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:40,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-01-18 02:38:40,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:40,621 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:40,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2067683619, now seen corresponding path program 59 times [2022-01-18 02:38:40,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:40,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906480576] [2022-01-18 02:38:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:40,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:40,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:40,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906480576] [2022-01-18 02:38:40,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906480576] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:40,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530908285] [2022-01-18 02:38:40,716 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:38:40,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:40,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:40,717 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:40,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 02:38:40,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 02:38:40,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:40,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:38:40,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:41,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:41,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530908285] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:41,213 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:41,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2022-01-18 02:38:41,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560105965] [2022-01-18 02:38:41,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:41,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 02:38:41,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:41,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 02:38:41,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-01-18 02:38:41,213 INFO L87 Difference]: Start difference. First operand 26557 states and 79816 transitions. Second operand has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:43,987 INFO L93 Difference]: Finished difference Result 49127 states and 146632 transitions. [2022-01-18 02:38:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-18 02:38:43,988 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:44,111 INFO L225 Difference]: With dead ends: 49127 [2022-01-18 02:38:44,111 INFO L226 Difference]: Without dead ends: 49055 [2022-01-18 02:38:44,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7621 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3626, Invalid=17544, Unknown=0, NotChecked=0, Total=21170 [2022-01-18 02:38:44,113 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1108 mSDsluCounter, 2544 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:44,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1108 Valid, 2583 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:38:44,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49055 states. [2022-01-18 02:38:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49055 to 29053. [2022-01-18 02:38:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29053 states, 29052 states have (on average 3.0139060994079583) internal successors, (87560), 29052 states have internal predecessors, (87560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29053 states to 29053 states and 87560 transitions. [2022-01-18 02:38:44,821 INFO L78 Accepts]: Start accepts. Automaton has 29053 states and 87560 transitions. Word has length 77 [2022-01-18 02:38:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:44,821 INFO L470 AbstractCegarLoop]: Abstraction has 29053 states and 87560 transitions. [2022-01-18 02:38:44,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 29053 states and 87560 transitions. [2022-01-18 02:38:44,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:44,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:44,870 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:44,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-18 02:38:45,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:45,075 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:45,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1768261465, now seen corresponding path program 60 times [2022-01-18 02:38:45,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:45,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538270185] [2022-01-18 02:38:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:45,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:45,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:45,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538270185] [2022-01-18 02:38:45,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538270185] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:45,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275419583] [2022-01-18 02:38:45,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:38:45,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:45,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:45,206 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:45,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 02:38:45,272 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:38:45,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:45,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:38:45,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:45,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:45,816 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:45,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275419583] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:45,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:45,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 36 [2022-01-18 02:38:45,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868491015] [2022-01-18 02:38:45,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:45,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:38:45,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:38:45,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:38:45,817 INFO L87 Difference]: Start difference. First operand 29053 states and 87560 transitions. Second operand has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:48,049 INFO L93 Difference]: Finished difference Result 47531 states and 141242 transitions. [2022-01-18 02:38:48,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 02:38:48,049 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:48,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:48,148 INFO L225 Difference]: With dead ends: 47531 [2022-01-18 02:38:48,148 INFO L226 Difference]: Without dead ends: 47366 [2022-01-18 02:38:48,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5531 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2843, Invalid=14187, Unknown=0, NotChecked=0, Total=17030 [2022-01-18 02:38:48,149 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 811 mSDsluCounter, 3081 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:48,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 3099 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:38:48,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47366 states. [2022-01-18 02:38:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47366 to 32281. [2022-01-18 02:38:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32281 states, 32280 states have (on average 3.000650557620818) internal successors, (96861), 32280 states have internal predecessors, (96861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32281 states to 32281 states and 96861 transitions. [2022-01-18 02:38:48,885 INFO L78 Accepts]: Start accepts. Automaton has 32281 states and 96861 transitions. Word has length 77 [2022-01-18 02:38:48,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:48,886 INFO L470 AbstractCegarLoop]: Abstraction has 32281 states and 96861 transitions. [2022-01-18 02:38:48,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 32281 states and 96861 transitions. [2022-01-18 02:38:48,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:48,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:48,935 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:48,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-01-18 02:38:49,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:49,140 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:49,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:49,140 INFO L85 PathProgramCache]: Analyzing trace with hash 157467359, now seen corresponding path program 61 times [2022-01-18 02:38:49,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:49,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827692103] [2022-01-18 02:38:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:49,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:49,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:49,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827692103] [2022-01-18 02:38:49,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827692103] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:49,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128613491] [2022-01-18 02:38:49,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:38:49,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:49,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:49,246 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:49,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 02:38:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:49,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:38:49,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:49,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:49,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128613491] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:49,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:49,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 31 [2022-01-18 02:38:49,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469165722] [2022-01-18 02:38:49,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:49,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:38:49,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:49,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:38:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:38:49,760 INFO L87 Difference]: Start difference. First operand 32281 states and 96861 transitions. Second operand has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:50,629 INFO L93 Difference]: Finished difference Result 36443 states and 108951 transitions. [2022-01-18 02:38:50,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 02:38:50,630 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:50,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:50,701 INFO L225 Difference]: With dead ends: 36443 [2022-01-18 02:38:50,701 INFO L226 Difference]: Without dead ends: 36371 [2022-01-18 02:38:50,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=813, Invalid=3879, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 02:38:50,702 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 599 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:50,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 1881 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:38:50,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36371 states. [2022-01-18 02:38:51,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36371 to 32553. [2022-01-18 02:38:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32553 states, 32552 states have (on average 2.998924797247481) internal successors, (97621), 32552 states have internal predecessors, (97621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32553 states to 32553 states and 97621 transitions. [2022-01-18 02:38:51,405 INFO L78 Accepts]: Start accepts. Automaton has 32553 states and 97621 transitions. Word has length 77 [2022-01-18 02:38:51,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:51,406 INFO L470 AbstractCegarLoop]: Abstraction has 32553 states and 97621 transitions. [2022-01-18 02:38:51,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.451612903225806) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:51,406 INFO L276 IsEmpty]: Start isEmpty. Operand 32553 states and 97621 transitions. [2022-01-18 02:38:51,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:51,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:51,462 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:51,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-18 02:38:51,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-01-18 02:38:51,663 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:51,663 INFO L85 PathProgramCache]: Analyzing trace with hash 304117667, now seen corresponding path program 62 times [2022-01-18 02:38:51,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:51,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706272958] [2022-01-18 02:38:51,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:51,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:51,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:51,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706272958] [2022-01-18 02:38:51,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706272958] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:51,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509260259] [2022-01-18 02:38:51,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:38:51,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:51,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:51,759 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:51,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 02:38:51,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:38:51,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:51,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:38:51,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:52,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:52,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509260259] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:52,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:52,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-01-18 02:38:52,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048937301] [2022-01-18 02:38:52,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:52,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:38:52,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:52,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:38:52,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:38:52,345 INFO L87 Difference]: Start difference. First operand 32553 states and 97621 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:53,629 INFO L93 Difference]: Finished difference Result 46148 states and 138061 transitions. [2022-01-18 02:38:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 02:38:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:53,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:53,730 INFO L225 Difference]: With dead ends: 46148 [2022-01-18 02:38:53,730 INFO L226 Difference]: Without dead ends: 46076 [2022-01-18 02:38:53,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2221 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1403, Invalid=6253, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 02:38:53,731 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 1028 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:53,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 2145 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:38:53,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46076 states. [2022-01-18 02:38:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46076 to 33461. [2022-01-18 02:38:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33461 states, 33460 states have (on average 3.012253436939629) internal successors, (100790), 33460 states have internal predecessors, (100790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33461 states to 33461 states and 100790 transitions. [2022-01-18 02:38:54,543 INFO L78 Accepts]: Start accepts. Automaton has 33461 states and 100790 transitions. Word has length 77 [2022-01-18 02:38:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:54,543 INFO L470 AbstractCegarLoop]: Abstraction has 33461 states and 100790 transitions. [2022-01-18 02:38:54,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 33461 states and 100790 transitions. [2022-01-18 02:38:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:54,594 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:54,594 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:54,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-01-18 02:38:54,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:54,799 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:54,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2147193931, now seen corresponding path program 63 times [2022-01-18 02:38:54,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:54,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398175789] [2022-01-18 02:38:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:54,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:54,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:54,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398175789] [2022-01-18 02:38:54,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398175789] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:54,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138451785] [2022-01-18 02:38:54,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:38:54,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:54,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:54,885 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:54,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 02:38:54,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 02:38:54,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:54,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:38:54,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:55,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:55,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138451785] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:55,471 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:55,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 34 [2022-01-18 02:38:55,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347209917] [2022-01-18 02:38:55,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:55,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:38:55,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:55,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:38:55,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:38:55,472 INFO L87 Difference]: Start difference. First operand 33461 states and 100790 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:57,307 INFO L93 Difference]: Finished difference Result 45082 states and 134091 transitions. [2022-01-18 02:38:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 02:38:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:38:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:57,404 INFO L225 Difference]: With dead ends: 45082 [2022-01-18 02:38:57,404 INFO L226 Difference]: Without dead ends: 44986 [2022-01-18 02:38:57,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4182 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2256, Invalid=10854, Unknown=0, NotChecked=0, Total=13110 [2022-01-18 02:38:57,406 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 999 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:57,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [999 Valid, 2380 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:38:57,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44986 states. [2022-01-18 02:38:58,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44986 to 33505. [2022-01-18 02:38:58,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33505 states, 33504 states have (on average 3.01143147086915) internal successors, (100895), 33504 states have internal predecessors, (100895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33505 states to 33505 states and 100895 transitions. [2022-01-18 02:38:58,248 INFO L78 Accepts]: Start accepts. Automaton has 33505 states and 100895 transitions. Word has length 77 [2022-01-18 02:38:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:58,248 INFO L470 AbstractCegarLoop]: Abstraction has 33505 states and 100895 transitions. [2022-01-18 02:38:58,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:58,248 INFO L276 IsEmpty]: Start isEmpty. Operand 33505 states and 100895 transitions. [2022-01-18 02:38:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:38:58,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:58,299 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:38:58,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-01-18 02:38:58,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-01-18 02:38:58,500 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:58,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2048811427, now seen corresponding path program 64 times [2022-01-18 02:38:58,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:58,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277633831] [2022-01-18 02:38:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:58,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:58,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:58,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277633831] [2022-01-18 02:38:58,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277633831] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:58,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504602153] [2022-01-18 02:38:58,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:38:58,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:58,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:58,614 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:58,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 02:38:58,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:38:58,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:58,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:38:58,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:58,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:59,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504602153] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:59,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:59,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 38 [2022-01-18 02:38:59,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321389455] [2022-01-18 02:38:59,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:59,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:38:59,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:59,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:38:59,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:38:59,266 INFO L87 Difference]: Start difference. First operand 33505 states and 100895 transitions. Second operand has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:01,520 INFO L93 Difference]: Finished difference Result 58794 states and 174283 transitions. [2022-01-18 02:39:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 02:39:01,520 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:01,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:01,654 INFO L225 Difference]: With dead ends: 58794 [2022-01-18 02:39:01,655 INFO L226 Difference]: Without dead ends: 58614 [2022-01-18 02:39:01,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6726 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3346, Invalid=15560, Unknown=0, NotChecked=0, Total=18906 [2022-01-18 02:39:01,657 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1057 mSDsluCounter, 3125 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:01,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 3136 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:39:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58614 states. [2022-01-18 02:39:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58614 to 41717. [2022-01-18 02:39:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41717 states, 41716 states have (on average 3.0048422667561607) internal successors, (125350), 41716 states have internal predecessors, (125350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41717 states to 41717 states and 125350 transitions. [2022-01-18 02:39:02,845 INFO L78 Accepts]: Start accepts. Automaton has 41717 states and 125350 transitions. Word has length 77 [2022-01-18 02:39:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:02,846 INFO L470 AbstractCegarLoop]: Abstraction has 41717 states and 125350 transitions. [2022-01-18 02:39:02,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.0) internal successors, (190), 38 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 41717 states and 125350 transitions. [2022-01-18 02:39:02,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:02,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:02,908 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:02,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-01-18 02:39:03,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-01-18 02:39:03,109 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1711934855, now seen corresponding path program 65 times [2022-01-18 02:39:03,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:03,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998731384] [2022-01-18 02:39:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:03,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:03,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:03,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998731384] [2022-01-18 02:39:03,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998731384] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:03,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455846903] [2022-01-18 02:39:03,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:39:03,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:03,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:03,210 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:03,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 02:39:03,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 02:39:03,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:03,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:39:03,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:03,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:03,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455846903] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:03,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:03,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 35 [2022-01-18 02:39:03,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142642983] [2022-01-18 02:39:03,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:03,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 02:39:03,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:03,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 02:39:03,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:39:03,921 INFO L87 Difference]: Start difference. First operand 41717 states and 125350 transitions. Second operand has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:05,879 INFO L93 Difference]: Finished difference Result 55045 states and 162992 transitions. [2022-01-18 02:39:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 02:39:05,879 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:06,015 INFO L225 Difference]: With dead ends: 55045 [2022-01-18 02:39:06,015 INFO L226 Difference]: Without dead ends: 54949 [2022-01-18 02:39:06,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4967 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2715, Invalid=12047, Unknown=0, NotChecked=0, Total=14762 [2022-01-18 02:39:06,017 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 1035 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:06,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 2762 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:39:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54949 states. [2022-01-18 02:39:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54949 to 40477. [2022-01-18 02:39:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40477 states, 40476 states have (on average 3.004150607767566) internal successors, (121596), 40476 states have internal predecessors, (121596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40477 states to 40477 states and 121596 transitions. [2022-01-18 02:39:07,017 INFO L78 Accepts]: Start accepts. Automaton has 40477 states and 121596 transitions. Word has length 77 [2022-01-18 02:39:07,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:07,017 INFO L470 AbstractCegarLoop]: Abstraction has 40477 states and 121596 transitions. [2022-01-18 02:39:07,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.914285714285715) internal successors, (172), 35 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:07,017 INFO L276 IsEmpty]: Start isEmpty. Operand 40477 states and 121596 transitions. [2022-01-18 02:39:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:07,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:07,078 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:07,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:07,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-01-18 02:39:07,278 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:07,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:07,279 INFO L85 PathProgramCache]: Analyzing trace with hash 921558363, now seen corresponding path program 66 times [2022-01-18 02:39:07,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:07,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970905021] [2022-01-18 02:39:07,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:07,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:07,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:07,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970905021] [2022-01-18 02:39:07,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970905021] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:07,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81280348] [2022-01-18 02:39:07,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:39:07,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:07,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:07,394 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:07,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 02:39:07,468 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 02:39:07,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:07,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:39:07,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:07,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:07,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81280348] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:07,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:07,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2022-01-18 02:39:07,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502337547] [2022-01-18 02:39:07,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:07,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:39:07,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:07,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:39:07,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:39:07,962 INFO L87 Difference]: Start difference. First operand 40477 states and 121596 transitions. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:09,410 INFO L93 Difference]: Finished difference Result 53143 states and 159305 transitions. [2022-01-18 02:39:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 02:39:09,410 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:09,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:09,537 INFO L225 Difference]: With dead ends: 53143 [2022-01-18 02:39:09,538 INFO L226 Difference]: Without dead ends: 52963 [2022-01-18 02:39:09,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2670 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1166, Invalid=6844, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 02:39:09,539 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 542 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:09,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 2236 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:39:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52963 states. [2022-01-18 02:39:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52963 to 46293. [2022-01-18 02:39:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46293 states, 46292 states have (on average 3.011017022379677) internal successors, (139386), 46292 states have internal predecessors, (139386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46293 states to 46293 states and 139386 transitions. [2022-01-18 02:39:10,757 INFO L78 Accepts]: Start accepts. Automaton has 46293 states and 139386 transitions. Word has length 77 [2022-01-18 02:39:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:10,757 INFO L470 AbstractCegarLoop]: Abstraction has 46293 states and 139386 transitions. [2022-01-18 02:39:10,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 46293 states and 139386 transitions. [2022-01-18 02:39:10,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:10,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:10,837 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:10,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-01-18 02:39:11,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 02:39:11,038 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:11,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash 265233891, now seen corresponding path program 67 times [2022-01-18 02:39:11,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:11,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932329502] [2022-01-18 02:39:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:11,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:11,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:11,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932329502] [2022-01-18 02:39:11,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932329502] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:11,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724457282] [2022-01-18 02:39:11,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:39:11,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:11,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:11,132 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:11,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 02:39:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:11,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:39:11,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:11,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:11,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724457282] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:11,810 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:11,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-01-18 02:39:11,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776433908] [2022-01-18 02:39:11,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:11,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:39:11,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:39:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:39:11,811 INFO L87 Difference]: Start difference. First operand 46293 states and 139386 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:13,541 INFO L93 Difference]: Finished difference Result 58970 states and 176096 transitions. [2022-01-18 02:39:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 02:39:13,542 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:13,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:13,757 INFO L225 Difference]: With dead ends: 58970 [2022-01-18 02:39:13,757 INFO L226 Difference]: Without dead ends: 58874 [2022-01-18 02:39:13,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3789 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1886, Invalid=9244, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 02:39:13,758 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 932 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:13,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 2125 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:39:13,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58874 states. [2022-01-18 02:39:14,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58874 to 49917. [2022-01-18 02:39:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49917 states, 49916 states have (on average 3.020915137430884) internal successors, (150792), 49916 states have internal predecessors, (150792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:14,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49917 states to 49917 states and 150792 transitions. [2022-01-18 02:39:14,932 INFO L78 Accepts]: Start accepts. Automaton has 49917 states and 150792 transitions. Word has length 77 [2022-01-18 02:39:14,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:14,933 INFO L470 AbstractCegarLoop]: Abstraction has 49917 states and 150792 transitions. [2022-01-18 02:39:14,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:14,933 INFO L276 IsEmpty]: Start isEmpty. Operand 49917 states and 150792 transitions. [2022-01-18 02:39:15,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:15,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:15,162 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:15,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:15,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:15,368 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:15,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2108889589, now seen corresponding path program 68 times [2022-01-18 02:39:15,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:15,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97696978] [2022-01-18 02:39:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:15,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:15,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:15,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97696978] [2022-01-18 02:39:15,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97696978] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:15,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558934263] [2022-01-18 02:39:15,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:39:15,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:15,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:15,456 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:15,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 02:39:15,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:39:15,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:15,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:39:15,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:15,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:15,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558934263] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:15,971 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:15,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-01-18 02:39:15,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745390531] [2022-01-18 02:39:15,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:15,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:39:15,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:15,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:39:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:39:15,973 INFO L87 Difference]: Start difference. First operand 49917 states and 150792 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:17,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:17,100 INFO L93 Difference]: Finished difference Result 52965 states and 159059 transitions. [2022-01-18 02:39:17,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 02:39:17,100 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:17,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:17,221 INFO L225 Difference]: With dead ends: 52965 [2022-01-18 02:39:17,221 INFO L226 Difference]: Without dead ends: 52845 [2022-01-18 02:39:17,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=985, Invalid=4565, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 02:39:17,222 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 618 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:17,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 1753 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:39:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52845 states. [2022-01-18 02:39:18,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52845 to 50573. [2022-01-18 02:39:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50573 states, 50572 states have (on average 3.0204856442300088) internal successors, (152752), 50572 states have internal predecessors, (152752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50573 states to 50573 states and 152752 transitions. [2022-01-18 02:39:18,326 INFO L78 Accepts]: Start accepts. Automaton has 50573 states and 152752 transitions. Word has length 77 [2022-01-18 02:39:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:18,326 INFO L470 AbstractCegarLoop]: Abstraction has 50573 states and 152752 transitions. [2022-01-18 02:39:18,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 50573 states and 152752 transitions. [2022-01-18 02:39:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:18,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:18,420 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:18,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-01-18 02:39:18,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:18,621 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:18,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:18,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1704232665, now seen corresponding path program 69 times [2022-01-18 02:39:18,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:18,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634520084] [2022-01-18 02:39:18,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:18,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:18,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:18,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634520084] [2022-01-18 02:39:18,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634520084] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:18,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603663552] [2022-01-18 02:39:18,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:39:18,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:18,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:18,742 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:18,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 02:39:18,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:39:18,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:18,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:39:18,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:19,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:19,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603663552] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:19,448 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:19,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 12] total 32 [2022-01-18 02:39:19,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517946714] [2022-01-18 02:39:19,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:19,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:39:19,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:19,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:39:19,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:39:19,449 INFO L87 Difference]: Start difference. First operand 50573 states and 152752 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:21,379 INFO L93 Difference]: Finished difference Result 55679 states and 167021 transitions. [2022-01-18 02:39:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 02:39:21,380 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:21,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:21,508 INFO L225 Difference]: With dead ends: 55679 [2022-01-18 02:39:21,508 INFO L226 Difference]: Without dead ends: 55619 [2022-01-18 02:39:21,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4321 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1900, Invalid=10756, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 02:39:21,509 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 687 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:21,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 2206 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:39:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55619 states. [2022-01-18 02:39:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55619 to 52498. [2022-01-18 02:39:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52498 states, 52497 states have (on average 3.0245918814408443) internal successors, (158782), 52497 states have internal predecessors, (158782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52498 states to 52498 states and 158782 transitions. [2022-01-18 02:39:22,823 INFO L78 Accepts]: Start accepts. Automaton has 52498 states and 158782 transitions. Word has length 77 [2022-01-18 02:39:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:22,824 INFO L470 AbstractCegarLoop]: Abstraction has 52498 states and 158782 transitions. [2022-01-18 02:39:22,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 52498 states and 158782 transitions. [2022-01-18 02:39:22,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:22,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:22,914 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:22,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-01-18 02:39:23,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:23,122 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:23,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:23,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1979648995, now seen corresponding path program 70 times [2022-01-18 02:39:23,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:23,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365202766] [2022-01-18 02:39:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:23,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:23,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:23,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365202766] [2022-01-18 02:39:23,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365202766] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:23,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407868717] [2022-01-18 02:39:23,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:39:23,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:23,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:23,245 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:23,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 02:39:23,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:39:23,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:23,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:39:23,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:23,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:39:23,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407868717] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:23,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:23,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-01-18 02:39:23,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211797720] [2022-01-18 02:39:23,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:23,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:39:23,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:23,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:39:23,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:39:23,902 INFO L87 Difference]: Start difference. First operand 52498 states and 158782 transitions. Second operand has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:25,780 INFO L93 Difference]: Finished difference Result 56930 states and 170437 transitions. [2022-01-18 02:39:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 02:39:25,781 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:25,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:25,931 INFO L225 Difference]: With dead ends: 56930 [2022-01-18 02:39:25,931 INFO L226 Difference]: Without dead ends: 56720 [2022-01-18 02:39:25,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4142 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2363, Invalid=9847, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 02:39:25,933 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 751 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:25,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 2152 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:39:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56720 states. [2022-01-18 02:39:26,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56720 to 50461. [2022-01-18 02:39:26,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50461 states, 50460 states have (on average 3.021799445105034) internal successors, (152480), 50460 states have internal predecessors, (152480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50461 states to 50461 states and 152480 transitions. [2022-01-18 02:39:27,087 INFO L78 Accepts]: Start accepts. Automaton has 50461 states and 152480 transitions. Word has length 77 [2022-01-18 02:39:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:27,088 INFO L470 AbstractCegarLoop]: Abstraction has 50461 states and 152480 transitions. [2022-01-18 02:39:27,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.135135135135135) internal successors, (190), 37 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:27,088 INFO L276 IsEmpty]: Start isEmpty. Operand 50461 states and 152480 transitions. [2022-01-18 02:39:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:27,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:27,343 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:27,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:27,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-01-18 02:39:27,544 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:27,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1781097287, now seen corresponding path program 71 times [2022-01-18 02:39:27,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:27,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138296651] [2022-01-18 02:39:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:27,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:27,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:27,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138296651] [2022-01-18 02:39:27,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138296651] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:27,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091887235] [2022-01-18 02:39:27,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:39:27,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:27,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:27,653 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:27,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 02:39:27,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 02:39:27,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:27,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:39:27,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:27,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:28,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091887235] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:28,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:28,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2022-01-18 02:39:28,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118042372] [2022-01-18 02:39:28,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:28,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:39:28,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:28,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:39:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:39:28,204 INFO L87 Difference]: Start difference. First operand 50461 states and 152480 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:29,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:29,440 INFO L93 Difference]: Finished difference Result 65246 states and 194541 transitions. [2022-01-18 02:39:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 02:39:29,440 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:29,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:29,610 INFO L225 Difference]: With dead ends: 65246 [2022-01-18 02:39:29,610 INFO L226 Difference]: Without dead ends: 65198 [2022-01-18 02:39:29,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=792, Invalid=4178, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 02:39:29,611 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 574 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:29,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 1965 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:39:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65198 states. [2022-01-18 02:39:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65198 to 50125. [2022-01-18 02:39:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50125 states, 50124 states have (on average 3.022025377064879) internal successors, (151476), 50124 states have internal predecessors, (151476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50125 states to 50125 states and 151476 transitions. [2022-01-18 02:39:30,785 INFO L78 Accepts]: Start accepts. Automaton has 50125 states and 151476 transitions. Word has length 77 [2022-01-18 02:39:30,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:30,785 INFO L470 AbstractCegarLoop]: Abstraction has 50125 states and 151476 transitions. [2022-01-18 02:39:30,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:30,785 INFO L276 IsEmpty]: Start isEmpty. Operand 50125 states and 151476 transitions. [2022-01-18 02:39:30,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:30,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:30,892 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:30,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:31,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:31,108 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:31,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:31,108 INFO L85 PathProgramCache]: Analyzing trace with hash -401938913, now seen corresponding path program 72 times [2022-01-18 02:39:31,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:31,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563033467] [2022-01-18 02:39:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:31,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:31,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:31,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563033467] [2022-01-18 02:39:31,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563033467] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:31,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606411849] [2022-01-18 02:39:31,203 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:39:31,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:31,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:31,204 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:31,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 02:39:31,280 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:39:31,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:31,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:39:31,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:31,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:39:31,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606411849] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:31,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:31,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-01-18 02:39:31,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014966182] [2022-01-18 02:39:31,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:31,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:39:31,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:31,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:39:31,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:39:31,783 INFO L87 Difference]: Start difference. First operand 50125 states and 151476 transitions. Second operand has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:33,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:33,405 INFO L93 Difference]: Finished difference Result 55334 states and 166142 transitions. [2022-01-18 02:39:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 02:39:33,405 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:33,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:33,542 INFO L225 Difference]: With dead ends: 55334 [2022-01-18 02:39:33,542 INFO L226 Difference]: Without dead ends: 55304 [2022-01-18 02:39:33,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3103 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1555, Invalid=7565, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 02:39:33,543 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 635 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:33,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 1641 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:39:33,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55304 states. [2022-01-18 02:39:34,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55304 to 52449. [2022-01-18 02:39:34,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52449 states, 52448 states have (on average 3.0233183343502135) internal successors, (158567), 52448 states have internal predecessors, (158567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52449 states to 52449 states and 158567 transitions. [2022-01-18 02:39:34,783 INFO L78 Accepts]: Start accepts. Automaton has 52449 states and 158567 transitions. Word has length 77 [2022-01-18 02:39:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:34,783 INFO L470 AbstractCegarLoop]: Abstraction has 52449 states and 158567 transitions. [2022-01-18 02:39:34,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.53125) internal successors, (177), 32 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:34,783 INFO L276 IsEmpty]: Start isEmpty. Operand 52449 states and 158567 transitions. [2022-01-18 02:39:34,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:34,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:34,873 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:34,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-01-18 02:39:35,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:35,074 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1940822727, now seen corresponding path program 73 times [2022-01-18 02:39:35,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:35,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754458877] [2022-01-18 02:39:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:35,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:35,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:35,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754458877] [2022-01-18 02:39:35,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754458877] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:35,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292692559] [2022-01-18 02:39:35,188 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:39:35,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:35,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:35,189 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:35,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 02:39:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:35,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:39:35,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:35,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:35,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292692559] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:35,962 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:35,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-01-18 02:39:35,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263034152] [2022-01-18 02:39:35,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:35,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:39:35,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:39:35,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:39:35,963 INFO L87 Difference]: Start difference. First operand 52449 states and 158567 transitions. Second operand has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:37,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:37,168 INFO L93 Difference]: Finished difference Result 55071 states and 165362 transitions. [2022-01-18 02:39:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 02:39:37,169 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:37,298 INFO L225 Difference]: With dead ends: 55071 [2022-01-18 02:39:37,298 INFO L226 Difference]: Without dead ends: 54987 [2022-01-18 02:39:37,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1977 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=962, Invalid=5200, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 02:39:37,299 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 550 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:37,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1874 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:39:37,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54987 states. [2022-01-18 02:39:38,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54987 to 51673. [2022-01-18 02:39:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51673 states, 51672 states have (on average 3.0223912370335966) internal successors, (156173), 51672 states have internal predecessors, (156173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51673 states to 51673 states and 156173 transitions. [2022-01-18 02:39:38,431 INFO L78 Accepts]: Start accepts. Automaton has 51673 states and 156173 transitions. Word has length 77 [2022-01-18 02:39:38,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:38,431 INFO L470 AbstractCegarLoop]: Abstraction has 51673 states and 156173 transitions. [2022-01-18 02:39:38,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.28125) internal successors, (169), 32 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:38,431 INFO L276 IsEmpty]: Start isEmpty. Operand 51673 states and 156173 transitions. [2022-01-18 02:39:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:38,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:38,517 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:38,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-01-18 02:39:38,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-01-18 02:39:38,717 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:38,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:38,717 INFO L85 PathProgramCache]: Analyzing trace with hash 848278107, now seen corresponding path program 74 times [2022-01-18 02:39:38,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:38,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386326778] [2022-01-18 02:39:38,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:38,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:38,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:38,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386326778] [2022-01-18 02:39:38,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386326778] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:38,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828898725] [2022-01-18 02:39:38,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:39:38,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:38,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:38,832 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:38,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 02:39:38,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:39:38,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:38,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:39:38,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:39,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:39,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828898725] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:39,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:39,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2022-01-18 02:39:39,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831846268] [2022-01-18 02:39:39,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:39,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:39:39,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:39:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:39:39,665 INFO L87 Difference]: Start difference. First operand 51673 states and 156173 transitions. Second operand has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:40,781 INFO L93 Difference]: Finished difference Result 54055 states and 162652 transitions. [2022-01-18 02:39:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 02:39:40,781 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:40,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:40,915 INFO L225 Difference]: With dead ends: 54055 [2022-01-18 02:39:40,915 INFO L226 Difference]: Without dead ends: 53947 [2022-01-18 02:39:40,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=804, Invalid=4598, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 02:39:40,916 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 414 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:40,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 2052 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:39:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53947 states. [2022-01-18 02:39:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53947 to 51757. [2022-01-18 02:39:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51757 states, 51756 states have (on average 3.022490146070021) internal successors, (156432), 51756 states have internal predecessors, (156432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51757 states to 51757 states and 156432 transitions. [2022-01-18 02:39:42,206 INFO L78 Accepts]: Start accepts. Automaton has 51757 states and 156432 transitions. Word has length 77 [2022-01-18 02:39:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:42,206 INFO L470 AbstractCegarLoop]: Abstraction has 51757 states and 156432 transitions. [2022-01-18 02:39:42,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.121212121212121) internal successors, (169), 33 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 51757 states and 156432 transitions. [2022-01-18 02:39:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:42,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:42,293 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:42,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-01-18 02:39:42,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-01-18 02:39:42,503 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:42,504 INFO L85 PathProgramCache]: Analyzing trace with hash 191953635, now seen corresponding path program 75 times [2022-01-18 02:39:42,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:42,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547030877] [2022-01-18 02:39:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:42,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:42,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:42,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547030877] [2022-01-18 02:39:42,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547030877] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:42,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752661208] [2022-01-18 02:39:42,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:39:42,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:42,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:42,594 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:42,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 02:39:42,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 02:39:42,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:42,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:39:42,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:42,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:43,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752661208] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:43,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:43,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 36 [2022-01-18 02:39:43,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895362928] [2022-01-18 02:39:43,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:43,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:39:43,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:43,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:39:43,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:39:43,136 INFO L87 Difference]: Start difference. First operand 51757 states and 156432 transitions. Second operand has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:46,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:46,037 INFO L93 Difference]: Finished difference Result 71838 states and 214721 transitions. [2022-01-18 02:39:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-18 02:39:46,037 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:46,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:46,225 INFO L225 Difference]: With dead ends: 71838 [2022-01-18 02:39:46,225 INFO L226 Difference]: Without dead ends: 71754 [2022-01-18 02:39:46,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3599, Invalid=17571, Unknown=0, NotChecked=0, Total=21170 [2022-01-18 02:39:46,227 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 992 mSDsluCounter, 3278 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:46,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 3329 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:39:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71754 states. [2022-01-18 02:39:47,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71754 to 52517. [2022-01-18 02:39:47,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52517 states, 52516 states have (on average 3.0226597608347934) internal successors, (158738), 52516 states have internal predecessors, (158738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52517 states to 52517 states and 158738 transitions. [2022-01-18 02:39:47,569 INFO L78 Accepts]: Start accepts. Automaton has 52517 states and 158738 transitions. Word has length 77 [2022-01-18 02:39:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:47,569 INFO L470 AbstractCegarLoop]: Abstraction has 52517 states and 158738 transitions. [2022-01-18 02:39:47,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.722222222222222) internal successors, (170), 36 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 52517 states and 158738 transitions. [2022-01-18 02:39:47,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:47,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:47,666 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:47,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-01-18 02:39:47,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:47,867 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:47,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2035609333, now seen corresponding path program 76 times [2022-01-18 02:39:47,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:47,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803468538] [2022-01-18 02:39:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:47,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:47,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:47,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803468538] [2022-01-18 02:39:47,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803468538] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:47,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781840716] [2022-01-18 02:39:47,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:39:47,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:47,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:47,955 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:47,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 02:39:48,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:39:48,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:48,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:39:48,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:48,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:48,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781840716] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:48,683 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:48,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 32 [2022-01-18 02:39:48,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708948706] [2022-01-18 02:39:48,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:48,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:39:48,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:48,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:39:48,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:39:48,684 INFO L87 Difference]: Start difference. First operand 52517 states and 158738 transitions. Second operand has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:49,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:49,583 INFO L93 Difference]: Finished difference Result 54275 states and 163351 transitions. [2022-01-18 02:39:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 02:39:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:49,708 INFO L225 Difference]: With dead ends: 54275 [2022-01-18 02:39:49,708 INFO L226 Difference]: Without dead ends: 54179 [2022-01-18 02:39:49,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=827, Invalid=4003, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 02:39:49,709 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 551 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:49,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 1678 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:39:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54179 states. [2022-01-18 02:39:50,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54179 to 52905. [2022-01-18 02:39:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52905 states, 52904 states have (on average 3.022474671102374) internal successors, (159901), 52904 states have internal predecessors, (159901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52905 states to 52905 states and 159901 transitions. [2022-01-18 02:39:51,123 INFO L78 Accepts]: Start accepts. Automaton has 52905 states and 159901 transitions. Word has length 77 [2022-01-18 02:39:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:51,124 INFO L470 AbstractCegarLoop]: Abstraction has 52905 states and 159901 transitions. [2022-01-18 02:39:51,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.25) internal successors, (168), 32 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 52905 states and 159901 transitions. [2022-01-18 02:39:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:51,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:51,222 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:51,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:51,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:51,423 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:51,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash 223279015, now seen corresponding path program 77 times [2022-01-18 02:39:51,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:51,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077913206] [2022-01-18 02:39:51,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:51,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:51,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:51,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077913206] [2022-01-18 02:39:51,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077913206] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:51,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135650554] [2022-01-18 02:39:51,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:39:51,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:51,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:51,541 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:51,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 02:39:51,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:39:51,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:51,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:39:51,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:51,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:39:52,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135650554] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:52,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:52,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-01-18 02:39:52,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926763001] [2022-01-18 02:39:52,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:52,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:39:52,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:52,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:39:52,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1124, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:39:52,168 INFO L87 Difference]: Start difference. First operand 52905 states and 159901 transitions. Second operand has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:53,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:53,883 INFO L93 Difference]: Finished difference Result 58061 states and 173874 transitions. [2022-01-18 02:39:53,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 02:39:53,884 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:53,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:54,017 INFO L225 Difference]: With dead ends: 58061 [2022-01-18 02:39:54,018 INFO L226 Difference]: Without dead ends: 57911 [2022-01-18 02:39:54,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3034 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1763, Invalid=7743, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 02:39:54,018 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 758 mSDsluCounter, 2962 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:54,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 2951 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:39:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57911 states. [2022-01-18 02:39:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57911 to 53649. [2022-01-18 02:39:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53649 states, 53648 states have (on average 3.02108186698479) internal successors, (162075), 53648 states have internal predecessors, (162075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:55,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53649 states to 53649 states and 162075 transitions. [2022-01-18 02:39:55,139 INFO L78 Accepts]: Start accepts. Automaton has 53649 states and 162075 transitions. Word has length 77 [2022-01-18 02:39:55,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:55,139 INFO L470 AbstractCegarLoop]: Abstraction has 53649 states and 162075 transitions. [2022-01-18 02:39:55,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 53649 states and 162075 transitions. [2022-01-18 02:39:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:55,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:55,230 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:55,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-01-18 02:39:55,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:55,431 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:55,431 INFO L85 PathProgramCache]: Analyzing trace with hash -155653451, now seen corresponding path program 78 times [2022-01-18 02:39:55,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:55,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924368492] [2022-01-18 02:39:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:55,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:55,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:55,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924368492] [2022-01-18 02:39:55,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924368492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:55,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160398169] [2022-01-18 02:39:55,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:39:55,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:55,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:55,723 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:55,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 02:39:55,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 02:39:55,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:55,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 02:39:55,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:56,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:39:56,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160398169] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:56,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:56,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 31 [2022-01-18 02:39:56,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041065521] [2022-01-18 02:39:56,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:56,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:39:56,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:56,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:39:56,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:39:56,301 INFO L87 Difference]: Start difference. First operand 53649 states and 162075 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:57,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:57,358 INFO L93 Difference]: Finished difference Result 60411 states and 181558 transitions. [2022-01-18 02:39:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 02:39:57,359 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:39:57,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:57,516 INFO L225 Difference]: With dead ends: 60411 [2022-01-18 02:39:57,516 INFO L226 Difference]: Without dead ends: 60315 [2022-01-18 02:39:57,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=708, Invalid=3452, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 02:39:57,517 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 526 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:57,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 2161 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:39:57,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60315 states. [2022-01-18 02:39:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60315 to 56021. [2022-01-18 02:39:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56021 states, 56020 states have (on average 3.023884327026062) internal successors, (169398), 56020 states have internal predecessors, (169398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56021 states to 56021 states and 169398 transitions. [2022-01-18 02:39:58,860 INFO L78 Accepts]: Start accepts. Automaton has 56021 states and 169398 transitions. Word has length 77 [2022-01-18 02:39:58,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:58,860 INFO L470 AbstractCegarLoop]: Abstraction has 56021 states and 169398 transitions. [2022-01-18 02:39:58,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 31 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:58,861 INFO L276 IsEmpty]: Start isEmpty. Operand 56021 states and 169398 transitions. [2022-01-18 02:39:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 02:39:58,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:58,958 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2022-01-18 02:39:58,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-01-18 02:39:59,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:59,159 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:59,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:59,159 INFO L85 PathProgramCache]: Analyzing trace with hash 31792739, now seen corresponding path program 79 times [2022-01-18 02:39:59,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:59,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441611845] [2022-01-18 02:39:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:59,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:59,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:59,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441611845] [2022-01-18 02:39:59,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441611845] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:59,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087368874] [2022-01-18 02:39:59,262 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:39:59,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:59,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:59,263 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:59,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 02:39:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:59,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:39:59,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:59,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:39:59,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087368874] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:59,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:59,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 12] total 37 [2022-01-18 02:39:59,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460327840] [2022-01-18 02:39:59,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:59,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:39:59,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:59,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:39:59,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1119, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:39:59,889 INFO L87 Difference]: Start difference. First operand 56021 states and 169398 transitions. Second operand has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:01,692 INFO L93 Difference]: Finished difference Result 63634 states and 190182 transitions. [2022-01-18 02:40:01,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 02:40:01,692 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-18 02:40:01,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:01,852 INFO L225 Difference]: With dead ends: 63634 [2022-01-18 02:40:01,852 INFO L226 Difference]: Without dead ends: 63469 [2022-01-18 02:40:01,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3205 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1981, Invalid=8321, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 02:40:01,853 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 782 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:01,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 2609 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:40:01,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63469 states. [2022-01-18 02:40:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63469 to 54757. [2022-01-18 02:40:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54757 states, 54756 states have (on average 3.020052596975674) internal successors, (165366), 54756 states have internal predecessors, (165366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54757 states to 54757 states and 165366 transitions. [2022-01-18 02:40:03,392 INFO L78 Accepts]: Start accepts. Automaton has 54757 states and 165366 transitions. Word has length 77 [2022-01-18 02:40:03,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:03,392 INFO L470 AbstractCegarLoop]: Abstraction has 54757 states and 165366 transitions. [2022-01-18 02:40:03,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.108108108108108) internal successors, (189), 37 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:03,392 INFO L276 IsEmpty]: Start isEmpty. Operand 54757 states and 165366 transitions. [2022-01-18 02:40:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:40:03,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:03,487 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:03,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-01-18 02:40:03,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:03,687 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:03,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1890973665, now seen corresponding path program 80 times [2022-01-18 02:40:03,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:03,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069850021] [2022-01-18 02:40:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:03,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:03,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:03,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069850021] [2022-01-18 02:40:03,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069850021] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:03,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993749867] [2022-01-18 02:40:03,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:40:03,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:03,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:03,764 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:03,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 02:40:03,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:40:03,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:40:03,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:40:03,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:03,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:04,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993749867] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:04,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:04,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2022-01-18 02:40:04,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147996720] [2022-01-18 02:40:04,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:04,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 02:40:04,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 02:40:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-01-18 02:40:04,445 INFO L87 Difference]: Start difference. First operand 54757 states and 165366 transitions. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:04,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:04,884 INFO L93 Difference]: Finished difference Result 86252 states and 263480 transitions. [2022-01-18 02:40:04,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 02:40:04,884 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:40:04,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:05,113 INFO L225 Difference]: With dead ends: 86252 [2022-01-18 02:40:05,113 INFO L226 Difference]: Without dead ends: 86024 [2022-01-18 02:40:05,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-01-18 02:40:05,113 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 290 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:05,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 1009 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:40:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86024 states. [2022-01-18 02:40:06,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86024 to 78062. [2022-01-18 02:40:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78062 states, 78061 states have (on average 3.033986241529061) internal successors, (236836), 78061 states have internal predecessors, (236836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78062 states to 78062 states and 236836 transitions. [2022-01-18 02:40:07,123 INFO L78 Accepts]: Start accepts. Automaton has 78062 states and 236836 transitions. Word has length 79 [2022-01-18 02:40:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:07,124 INFO L470 AbstractCegarLoop]: Abstraction has 78062 states and 236836 transitions. [2022-01-18 02:40:07,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:07,124 INFO L276 IsEmpty]: Start isEmpty. Operand 78062 states and 236836 transitions. [2022-01-18 02:40:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:40:07,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:07,256 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:07,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-01-18 02:40:07,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-01-18 02:40:07,457 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:07,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:07,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1781177015, now seen corresponding path program 81 times [2022-01-18 02:40:07,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:07,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039875648] [2022-01-18 02:40:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:07,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:07,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:07,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039875648] [2022-01-18 02:40:07,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039875648] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:07,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982664885] [2022-01-18 02:40:07,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:40:07,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:07,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:07,576 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:07,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 02:40:07,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 02:40:07,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:40:07,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:40:07,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:07,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:07,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982664885] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:07,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:07,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 22 [2022-01-18 02:40:07,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016934410] [2022-01-18 02:40:07,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:07,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 02:40:07,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:07,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 02:40:07,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-01-18 02:40:07,985 INFO L87 Difference]: Start difference. First operand 78062 states and 236836 transitions. Second operand has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:08,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:08,887 INFO L93 Difference]: Finished difference Result 90363 states and 273656 transitions. [2022-01-18 02:40:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 02:40:08,888 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:40:08,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:09,422 INFO L225 Difference]: With dead ends: 90363 [2022-01-18 02:40:09,423 INFO L226 Difference]: Without dead ends: 90348 [2022-01-18 02:40:09,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=342, Invalid=1728, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 02:40:09,423 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 388 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:09,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 2010 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:40:09,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90348 states. [2022-01-18 02:40:10,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90348 to 81518. [2022-01-18 02:40:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81518 states, 81517 states have (on average 3.0429480967160223) internal successors, (248052), 81517 states have internal predecessors, (248052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81518 states to 81518 states and 248052 transitions. [2022-01-18 02:40:11,520 INFO L78 Accepts]: Start accepts. Automaton has 81518 states and 248052 transitions. Word has length 79 [2022-01-18 02:40:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:11,521 INFO L470 AbstractCegarLoop]: Abstraction has 81518 states and 248052 transitions. [2022-01-18 02:40:11,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.045454545454546) internal successors, (155), 22 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 81518 states and 248052 transitions. [2022-01-18 02:40:11,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:40:11,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:11,671 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:11,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-01-18 02:40:11,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:11,872 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:11,872 INFO L85 PathProgramCache]: Analyzing trace with hash -273105791, now seen corresponding path program 82 times [2022-01-18 02:40:11,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:11,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995392779] [2022-01-18 02:40:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:11,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:11,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:11,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995392779] [2022-01-18 02:40:11,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995392779] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:11,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354341134] [2022-01-18 02:40:11,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:40:11,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:11,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:11,973 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:11,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 02:40:12,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:40:12,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:40:12,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:40:12,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:12,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:12,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354341134] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:12,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:12,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2022-01-18 02:40:12,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356964710] [2022-01-18 02:40:12,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:12,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:40:12,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:12,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:40:12,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:40:12,718 INFO L87 Difference]: Start difference. First operand 81518 states and 248052 transitions. Second operand has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:16,617 INFO L93 Difference]: Finished difference Result 115213 states and 345840 transitions. [2022-01-18 02:40:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-01-18 02:40:16,617 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:40:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:16,938 INFO L225 Difference]: With dead ends: 115213 [2022-01-18 02:40:16,938 INFO L226 Difference]: Without dead ends: 115003 [2022-01-18 02:40:16,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10414 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3727, Invalid=23995, Unknown=0, NotChecked=0, Total=27722 [2022-01-18 02:40:16,940 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1001 mSDsluCounter, 3377 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:16,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 3465 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:40:17,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115003 states. [2022-01-18 02:40:18,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115003 to 84166. [2022-01-18 02:40:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84166 states, 84165 states have (on average 3.038578981762015) internal successors, (255742), 84165 states have internal predecessors, (255742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84166 states to 84166 states and 255742 transitions. [2022-01-18 02:40:19,282 INFO L78 Accepts]: Start accepts. Automaton has 84166 states and 255742 transitions. Word has length 79 [2022-01-18 02:40:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:19,282 INFO L470 AbstractCegarLoop]: Abstraction has 84166 states and 255742 transitions. [2022-01-18 02:40:19,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 84166 states and 255742 transitions. [2022-01-18 02:40:19,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:40:19,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:19,729 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:19,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-01-18 02:40:19,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:19,929 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:19,930 INFO L85 PathProgramCache]: Analyzing trace with hash 261115223, now seen corresponding path program 83 times [2022-01-18 02:40:19,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:19,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885124563] [2022-01-18 02:40:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:19,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:20,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:20,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885124563] [2022-01-18 02:40:20,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885124563] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:20,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500453371] [2022-01-18 02:40:20,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:40:20,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:20,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:20,033 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:20,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 02:40:20,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 02:40:20,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:40:20,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 02:40:20,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:20,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:20,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500453371] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:20,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:20,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 39 [2022-01-18 02:40:20,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478224342] [2022-01-18 02:40:20,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:20,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:40:20,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:20,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:40:20,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1218, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:40:20,964 INFO L87 Difference]: Start difference. First operand 84166 states and 255742 transitions. Second operand has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:25,114 INFO L93 Difference]: Finished difference Result 128331 states and 384407 transitions. [2022-01-18 02:40:25,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-18 02:40:25,115 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:40:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:25,470 INFO L225 Difference]: With dead ends: 128331 [2022-01-18 02:40:25,470 INFO L226 Difference]: Without dead ends: 128235 [2022-01-18 02:40:25,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8998 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3968, Invalid=20524, Unknown=0, NotChecked=0, Total=24492 [2022-01-18 02:40:25,472 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 1324 mSDsluCounter, 3285 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:25,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 3333 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:40:25,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128235 states. [2022-01-18 02:40:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128235 to 84626. [2022-01-18 02:40:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84626 states, 84625 states have (on average 3.0380502215657312) internal successors, (257095), 84625 states have internal predecessors, (257095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84626 states to 84626 states and 257095 transitions. [2022-01-18 02:40:28,219 INFO L78 Accepts]: Start accepts. Automaton has 84626 states and 257095 transitions. Word has length 79 [2022-01-18 02:40:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:28,219 INFO L470 AbstractCegarLoop]: Abstraction has 84626 states and 257095 transitions. [2022-01-18 02:40:28,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.8205128205128207) internal successors, (149), 39 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:28,219 INFO L276 IsEmpty]: Start isEmpty. Operand 84626 states and 257095 transitions. [2022-01-18 02:40:28,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:40:28,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:28,361 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:28,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-01-18 02:40:28,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:28,561 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:28,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:28,562 INFO L85 PathProgramCache]: Analyzing trace with hash 402406013, now seen corresponding path program 84 times [2022-01-18 02:40:28,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:28,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932291214] [2022-01-18 02:40:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:28,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:28,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:28,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932291214] [2022-01-18 02:40:28,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932291214] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:28,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093760862] [2022-01-18 02:40:28,696 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:40:28,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:28,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:28,697 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:28,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 02:40:28,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 02:40:28,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:40:28,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:40:28,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:29,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:29,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093760862] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:29,481 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:29,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 33 [2022-01-18 02:40:29,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258153873] [2022-01-18 02:40:29,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:29,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:40:29,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:29,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:40:29,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:40:29,482 INFO L87 Difference]: Start difference. First operand 84626 states and 257095 transitions. Second operand has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 33 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:34,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:34,615 INFO L93 Difference]: Finished difference Result 178213 states and 538935 transitions. [2022-01-18 02:40:34,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-01-18 02:40:34,616 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 33 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:40:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:35,474 INFO L225 Difference]: With dead ends: 178213 [2022-01-18 02:40:35,474 INFO L226 Difference]: Without dead ends: 178153 [2022-01-18 02:40:35,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13795 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5031, Invalid=30501, Unknown=0, NotChecked=0, Total=35532 [2022-01-18 02:40:35,475 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1444 mSDsluCounter, 3644 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:35,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 3702 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:40:35,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178153 states. [2022-01-18 02:40:38,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178153 to 109958. [2022-01-18 02:40:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109958 states, 109957 states have (on average 3.0657256927708105) internal successors, (337098), 109957 states have internal predecessors, (337098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109958 states to 109958 states and 337098 transitions. [2022-01-18 02:40:39,080 INFO L78 Accepts]: Start accepts. Automaton has 109958 states and 337098 transitions. Word has length 79 [2022-01-18 02:40:39,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:39,080 INFO L470 AbstractCegarLoop]: Abstraction has 109958 states and 337098 transitions. [2022-01-18 02:40:39,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.666666666666667) internal successors, (154), 33 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:39,081 INFO L276 IsEmpty]: Start isEmpty. Operand 109958 states and 337098 transitions. [2022-01-18 02:40:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:40:39,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:39,276 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:39,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-01-18 02:40:39,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:39,476 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:39,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1136477801, now seen corresponding path program 85 times [2022-01-18 02:40:39,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:39,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803801325] [2022-01-18 02:40:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:39,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:39,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:39,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803801325] [2022-01-18 02:40:39,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803801325] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:39,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731707844] [2022-01-18 02:40:39,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:40:39,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:39,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:39,585 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:39,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 02:40:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:39,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:40:39,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:39,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:40,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731707844] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:40,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:40,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 33 [2022-01-18 02:40:40,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605016910] [2022-01-18 02:40:40,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:40,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:40:40,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:40,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:40:40,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:40:40,343 INFO L87 Difference]: Start difference. First operand 109958 states and 337098 transitions. Second operand has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:44,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:44,746 INFO L93 Difference]: Finished difference Result 169821 states and 514530 transitions. [2022-01-18 02:40:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-01-18 02:40:44,746 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:40:44,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:45,282 INFO L225 Difference]: With dead ends: 169821 [2022-01-18 02:40:45,283 INFO L226 Difference]: Without dead ends: 169677 [2022-01-18 02:40:45,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6874 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2892, Invalid=17130, Unknown=0, NotChecked=0, Total=20022 [2022-01-18 02:40:45,283 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1304 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:45,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1304 Valid, 3495 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:40:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169677 states. [2022-01-18 02:40:48,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169677 to 118518. [2022-01-18 02:40:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118518 states, 118517 states have (on average 3.0580423061670476) internal successors, (362430), 118517 states have internal predecessors, (362430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118518 states to 118518 states and 362430 transitions. [2022-01-18 02:40:48,955 INFO L78 Accepts]: Start accepts. Automaton has 118518 states and 362430 transitions. Word has length 79 [2022-01-18 02:40:48,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:48,955 INFO L470 AbstractCegarLoop]: Abstraction has 118518 states and 362430 transitions. [2022-01-18 02:40:48,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.424242424242424) internal successors, (146), 33 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:48,956 INFO L276 IsEmpty]: Start isEmpty. Operand 118518 states and 362430 transitions. [2022-01-18 02:40:49,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:40:49,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:49,173 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:49,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-01-18 02:40:49,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:49,374 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:49,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1652623033, now seen corresponding path program 86 times [2022-01-18 02:40:49,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:49,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777961103] [2022-01-18 02:40:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:49,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:49,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:49,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777961103] [2022-01-18 02:40:49,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777961103] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:49,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875998940] [2022-01-18 02:40:49,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:40:49,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:49,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:49,489 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:49,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 02:40:49,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:40:49,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:40:49,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:40:49,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:49,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:50,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875998940] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:50,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:50,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 34 [2022-01-18 02:40:50,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686594414] [2022-01-18 02:40:50,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:50,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:40:50,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:50,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:40:50,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:40:50,270 INFO L87 Difference]: Start difference. First operand 118518 states and 362430 transitions. Second operand has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:54,116 INFO L93 Difference]: Finished difference Result 156117 states and 475053 transitions. [2022-01-18 02:40:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 02:40:54,116 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:40:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:54,844 INFO L225 Difference]: With dead ends: 156117 [2022-01-18 02:40:54,844 INFO L226 Difference]: Without dead ends: 155997 [2022-01-18 02:40:54,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5320 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2283, Invalid=13719, Unknown=0, NotChecked=0, Total=16002 [2022-01-18 02:40:54,845 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1135 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:54,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 4343 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:40:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155997 states. [2022-01-18 02:40:57,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155997 to 121754. [2022-01-18 02:40:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121754 states, 121753 states have (on average 3.060006734946983) internal successors, (372565), 121753 states have internal predecessors, (372565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:58,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121754 states to 121754 states and 372565 transitions. [2022-01-18 02:40:58,499 INFO L78 Accepts]: Start accepts. Automaton has 121754 states and 372565 transitions. Word has length 79 [2022-01-18 02:40:58,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:58,499 INFO L470 AbstractCegarLoop]: Abstraction has 121754 states and 372565 transitions. [2022-01-18 02:40:58,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:58,499 INFO L276 IsEmpty]: Start isEmpty. Operand 121754 states and 372565 transitions. [2022-01-18 02:40:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:40:58,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:58,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:58,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-01-18 02:40:58,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-01-18 02:40:58,983 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:58,984 INFO L85 PathProgramCache]: Analyzing trace with hash 549056321, now seen corresponding path program 87 times [2022-01-18 02:40:58,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:58,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001780742] [2022-01-18 02:40:58,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:58,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:59,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:59,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001780742] [2022-01-18 02:40:59,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001780742] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:59,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835162450] [2022-01-18 02:40:59,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:40:59,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:59,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:59,169 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:59,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 02:40:59,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 02:40:59,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:40:59,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:40:59,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:59,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:00,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835162450] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:00,196 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:00,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 02:41:00,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096926742] [2022-01-18 02:41:00,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:00,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:41:00,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:00,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:41:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:41:00,197 INFO L87 Difference]: Start difference. First operand 121754 states and 372565 transitions. Second operand has 37 states, 37 states have (on average 4.243243243243243) internal successors, (157), 37 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:06,460 INFO L93 Difference]: Finished difference Result 187807 states and 568677 transitions. [2022-01-18 02:41:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2022-01-18 02:41:06,460 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.243243243243243) internal successors, (157), 37 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:41:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:07,051 INFO L225 Difference]: With dead ends: 187807 [2022-01-18 02:41:07,051 INFO L226 Difference]: Without dead ends: 187762 [2022-01-18 02:41:07,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23293 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8337, Invalid=47595, Unknown=0, NotChecked=0, Total=55932 [2022-01-18 02:41:07,053 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1706 mSDsluCounter, 3487 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:07,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 3540 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2102 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:41:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187762 states. [2022-01-18 02:41:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187762 to 129722. [2022-01-18 02:41:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129722 states, 129721 states have (on average 3.0576776312239344) internal successors, (396645), 129721 states have internal predecessors, (396645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129722 states to 129722 states and 396645 transitions. [2022-01-18 02:41:10,775 INFO L78 Accepts]: Start accepts. Automaton has 129722 states and 396645 transitions. Word has length 79 [2022-01-18 02:41:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:10,776 INFO L470 AbstractCegarLoop]: Abstraction has 129722 states and 396645 transitions. [2022-01-18 02:41:10,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.243243243243243) internal successors, (157), 37 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand 129722 states and 396645 transitions. [2022-01-18 02:41:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:41:11,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:11,004 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:11,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-01-18 02:41:11,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:11,204 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:11,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash -989827493, now seen corresponding path program 88 times [2022-01-18 02:41:11,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:11,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939848884] [2022-01-18 02:41:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:11,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:11,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:11,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939848884] [2022-01-18 02:41:11,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939848884] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:11,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681428588] [2022-01-18 02:41:11,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:41:11,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:11,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:11,331 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:11,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 02:41:11,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:41:11,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:41:11,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:41:11,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:11,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:41:12,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681428588] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:12,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:12,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 34 [2022-01-18 02:41:12,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487109935] [2022-01-18 02:41:12,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:12,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:41:12,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:12,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:41:12,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=937, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:41:12,585 INFO L87 Difference]: Start difference. First operand 129722 states and 396645 transitions. Second operand has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:17,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:17,844 INFO L93 Difference]: Finished difference Result 194091 states and 592313 transitions. [2022-01-18 02:41:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-01-18 02:41:17,845 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:41:17,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:18,460 INFO L225 Difference]: With dead ends: 194091 [2022-01-18 02:41:18,460 INFO L226 Difference]: Without dead ends: 194019 [2022-01-18 02:41:18,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15896 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5887, Invalid=34313, Unknown=0, NotChecked=0, Total=40200 [2022-01-18 02:41:18,462 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 1471 mSDsluCounter, 3826 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 3874 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:18,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 3874 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:41:18,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194019 states. [2022-01-18 02:41:21,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194019 to 128546. [2022-01-18 02:41:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128546 states, 128545 states have (on average 3.057567388852153) internal successors, (393035), 128545 states have internal predecessors, (393035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128546 states to 128546 states and 393035 transitions. [2022-01-18 02:41:22,886 INFO L78 Accepts]: Start accepts. Automaton has 128546 states and 393035 transitions. Word has length 79 [2022-01-18 02:41:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:22,886 INFO L470 AbstractCegarLoop]: Abstraction has 128546 states and 393035 transitions. [2022-01-18 02:41:22,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:22,886 INFO L276 IsEmpty]: Start isEmpty. Operand 128546 states and 393035 transitions. [2022-01-18 02:41:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:41:23,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:23,163 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:23,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-01-18 02:41:23,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:23,365 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:23,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1799273341, now seen corresponding path program 89 times [2022-01-18 02:41:23,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:23,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808879820] [2022-01-18 02:41:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:23,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:23,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:23,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808879820] [2022-01-18 02:41:23,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808879820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:23,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759054982] [2022-01-18 02:41:23,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:41:23,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:23,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:23,475 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:23,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 02:41:23,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 02:41:23,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:41:23,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:41:23,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:23,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:24,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759054982] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:24,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:24,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-01-18 02:41:24,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583121342] [2022-01-18 02:41:24,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:24,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:41:24,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:24,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:41:24,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:41:24,347 INFO L87 Difference]: Start difference. First operand 128546 states and 393035 transitions. Second operand has 37 states, 37 states have (on average 3.972972972972973) internal successors, (147), 37 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:31,653 INFO L93 Difference]: Finished difference Result 215746 states and 653346 transitions. [2022-01-18 02:41:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2022-01-18 02:41:31,653 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.972972972972973) internal successors, (147), 37 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:41:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:32,387 INFO L225 Difference]: With dead ends: 215746 [2022-01-18 02:41:32,388 INFO L226 Difference]: Without dead ends: 215626 [2022-01-18 02:41:32,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25913 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=8688, Invalid=53562, Unknown=0, NotChecked=0, Total=62250 [2022-01-18 02:41:32,390 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 1781 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:32,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1781 Valid, 3311 Invalid, 2322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:41:32,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215626 states. [2022-01-18 02:41:36,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215626 to 130014. [2022-01-18 02:41:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130014 states, 130013 states have (on average 3.057724996731096) internal successors, (397544), 130013 states have internal predecessors, (397544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:36,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130014 states to 130014 states and 397544 transitions. [2022-01-18 02:41:36,575 INFO L78 Accepts]: Start accepts. Automaton has 130014 states and 397544 transitions. Word has length 79 [2022-01-18 02:41:36,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:36,575 INFO L470 AbstractCegarLoop]: Abstraction has 130014 states and 397544 transitions. [2022-01-18 02:41:36,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.972972972972973) internal successors, (147), 37 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:36,575 INFO L276 IsEmpty]: Start isEmpty. Operand 130014 states and 397544 transitions. [2022-01-18 02:41:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:41:37,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:37,307 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:37,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-01-18 02:41:37,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:37,508 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:37,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:37,508 INFO L85 PathProgramCache]: Analyzing trace with hash -652038257, now seen corresponding path program 90 times [2022-01-18 02:41:37,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:37,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217064636] [2022-01-18 02:41:37,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:37,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:37,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:37,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217064636] [2022-01-18 02:41:37,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217064636] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:37,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918600513] [2022-01-18 02:41:37,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:41:37,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:37,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:37,616 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:37,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 02:41:37,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 02:41:37,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:41:37,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:41:37,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:37,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:38,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918600513] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:38,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:38,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 34 [2022-01-18 02:41:38,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700446885] [2022-01-18 02:41:38,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:38,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:41:38,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:38,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:41:38,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:41:38,422 INFO L87 Difference]: Start difference. First operand 130014 states and 397544 transitions. Second operand has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:41,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:41,417 INFO L93 Difference]: Finished difference Result 138821 states and 422611 transitions. [2022-01-18 02:41:41,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 02:41:41,417 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:41:41,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:41,818 INFO L225 Difference]: With dead ends: 138821 [2022-01-18 02:41:41,818 INFO L226 Difference]: Without dead ends: 138725 [2022-01-18 02:41:41,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4368 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1890, Invalid=10766, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 02:41:41,819 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1053 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:41,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 2889 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:41:41,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138725 states. [2022-01-18 02:41:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138725 to 130630. [2022-01-18 02:41:44,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130630 states, 130629 states have (on average 3.0575599598863956) internal successors, (399406), 130629 states have internal predecessors, (399406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130630 states to 130630 states and 399406 transitions. [2022-01-18 02:41:45,358 INFO L78 Accepts]: Start accepts. Automaton has 130630 states and 399406 transitions. Word has length 79 [2022-01-18 02:41:45,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:45,358 INFO L470 AbstractCegarLoop]: Abstraction has 130630 states and 399406 transitions. [2022-01-18 02:41:45,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.264705882352941) internal successors, (145), 34 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:45,359 INFO L276 IsEmpty]: Start isEmpty. Operand 130630 states and 399406 transitions. [2022-01-18 02:41:45,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:41:45,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:45,576 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:45,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2022-01-18 02:41:45,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:45,776 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:45,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:45,777 INFO L85 PathProgramCache]: Analyzing trace with hash 679914949, now seen corresponding path program 91 times [2022-01-18 02:41:45,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:45,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38504887] [2022-01-18 02:41:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:45,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:45,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:45,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38504887] [2022-01-18 02:41:45,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38504887] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:45,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919136700] [2022-01-18 02:41:45,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:41:45,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:45,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:45,892 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:45,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 02:41:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:45,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:41:45,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:46,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:46,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919136700] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:46,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:46,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2022-01-18 02:41:46,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627469942] [2022-01-18 02:41:46,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:46,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:41:46,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:46,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:41:46,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:41:46,628 INFO L87 Difference]: Start difference. First operand 130630 states and 399406 transitions. Second operand has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:51,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:51,509 INFO L93 Difference]: Finished difference Result 201205 states and 603545 transitions. [2022-01-18 02:41:51,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-18 02:41:51,509 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:41:51,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:52,471 INFO L225 Difference]: With dead ends: 201205 [2022-01-18 02:41:52,471 INFO L226 Difference]: Without dead ends: 201010 [2022-01-18 02:41:52,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10186 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3491, Invalid=23241, Unknown=0, NotChecked=0, Total=26732 [2022-01-18 02:41:52,472 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 767 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 4388 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:52,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 4388 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 02:41:52,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201010 states. [2022-01-18 02:41:56,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201010 to 156422. [2022-01-18 02:41:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156422 states, 156421 states have (on average 3.0178684447740394) internal successors, (472058), 156421 states have internal predecessors, (472058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156422 states to 156422 states and 472058 transitions. [2022-01-18 02:41:56,740 INFO L78 Accepts]: Start accepts. Automaton has 156422 states and 472058 transitions. Word has length 79 [2022-01-18 02:41:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:56,741 INFO L470 AbstractCegarLoop]: Abstraction has 156422 states and 472058 transitions. [2022-01-18 02:41:56,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.96875) internal successors, (159), 32 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:56,741 INFO L276 IsEmpty]: Start isEmpty. Operand 156422 states and 472058 transitions. [2022-01-18 02:41:57,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:41:57,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:57,005 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:57,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-01-18 02:41:57,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:57,205 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:57,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:57,206 INFO L85 PathProgramCache]: Analyzing trace with hash 300982483, now seen corresponding path program 92 times [2022-01-18 02:41:57,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:57,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915866342] [2022-01-18 02:41:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:57,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:57,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:57,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915866342] [2022-01-18 02:41:57,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915866342] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:57,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372791478] [2022-01-18 02:41:57,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:41:57,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:57,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:57,319 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:57,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 02:41:57,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:41:57,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:41:57,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:41:57,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:58,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:58,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372791478] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:58,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:58,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 34 [2022-01-18 02:41:58,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417294381] [2022-01-18 02:41:58,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:58,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:41:58,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:58,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:41:58,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:41:58,605 INFO L87 Difference]: Start difference. First operand 156422 states and 472058 transitions. Second operand has 34 states, 34 states have (on average 4.529411764705882) internal successors, (154), 34 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:03,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:03,984 INFO L93 Difference]: Finished difference Result 218569 states and 656212 transitions. [2022-01-18 02:42:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-01-18 02:42:03,985 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.529411764705882) internal successors, (154), 34 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:42:03,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:04,718 INFO L225 Difference]: With dead ends: 218569 [2022-01-18 02:42:04,718 INFO L226 Difference]: Without dead ends: 218269 [2022-01-18 02:42:04,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10283 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4360, Invalid=24032, Unknown=0, NotChecked=0, Total=28392 [2022-01-18 02:42:04,719 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1222 mSDsluCounter, 3988 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:04,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 3956 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:42:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218269 states. [2022-01-18 02:42:09,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218269 to 187494. [2022-01-18 02:42:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187494 states, 187493 states have (on average 3.025915634183676) internal successors, (567338), 187493 states have internal predecessors, (567338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:10,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187494 states to 187494 states and 567338 transitions. [2022-01-18 02:42:10,787 INFO L78 Accepts]: Start accepts. Automaton has 187494 states and 567338 transitions. Word has length 79 [2022-01-18 02:42:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:10,787 INFO L470 AbstractCegarLoop]: Abstraction has 187494 states and 567338 transitions. [2022-01-18 02:42:10,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.529411764705882) internal successors, (154), 34 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 187494 states and 567338 transitions. [2022-01-18 02:42:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:42:11,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:11,081 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:11,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-01-18 02:42:11,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-01-18 02:42:11,284 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:11,285 INFO L85 PathProgramCache]: Analyzing trace with hash 984893377, now seen corresponding path program 93 times [2022-01-18 02:42:11,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:11,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310515666] [2022-01-18 02:42:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:11,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:11,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:11,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310515666] [2022-01-18 02:42:11,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310515666] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:11,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047539603] [2022-01-18 02:42:11,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:42:11,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:11,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:11,421 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:11,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 02:42:11,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:42:11,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:42:11,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:42:11,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:11,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:12,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047539603] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:12,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:12,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 15] total 39 [2022-01-18 02:42:12,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087855579] [2022-01-18 02:42:12,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:12,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:42:12,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:12,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:42:12,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1282, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:42:12,247 INFO L87 Difference]: Start difference. First operand 187494 states and 567338 transitions. Second operand has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 39 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:16,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:16,591 INFO L93 Difference]: Finished difference Result 262223 states and 784712 transitions. [2022-01-18 02:42:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-18 02:42:16,591 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 39 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:42:16,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:17,933 INFO L225 Difference]: With dead ends: 262223 [2022-01-18 02:42:17,933 INFO L226 Difference]: Without dead ends: 261953 [2022-01-18 02:42:17,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9191 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3155, Invalid=21025, Unknown=0, NotChecked=0, Total=24180 [2022-01-18 02:42:17,934 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 1102 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3823 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:17,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 3823 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:42:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261953 states. [2022-01-18 02:42:22,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261953 to 195054. [2022-01-18 02:42:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195054 states, 195053 states have (on average 3.0166570111713225) internal successors, (588408), 195053 states have internal predecessors, (588408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195054 states to 195054 states and 588408 transitions. [2022-01-18 02:42:23,714 INFO L78 Accepts]: Start accepts. Automaton has 195054 states and 588408 transitions. Word has length 79 [2022-01-18 02:42:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:23,714 INFO L470 AbstractCegarLoop]: Abstraction has 195054 states and 588408 transitions. [2022-01-18 02:42:23,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 39 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 195054 states and 588408 transitions. [2022-01-18 02:42:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:42:24,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:24,040 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:24,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-01-18 02:42:24,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-01-18 02:42:24,241 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:24,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:24,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1036643905, now seen corresponding path program 94 times [2022-01-18 02:42:24,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:24,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472941053] [2022-01-18 02:42:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:24,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:24,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:24,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472941053] [2022-01-18 02:42:24,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472941053] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:24,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187047552] [2022-01-18 02:42:24,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:42:24,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:24,354 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:24,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 02:42:25,083 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:42:25,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:42:25,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:42:25,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:25,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:25,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187047552] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:25,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:25,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2022-01-18 02:42:25,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395469545] [2022-01-18 02:42:25,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:25,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:42:25,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:42:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:42:25,725 INFO L87 Difference]: Start difference. First operand 195054 states and 588408 transitions. Second operand has 32 states, 32 states have (on average 4.6875) internal successors, (150), 32 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:28,537 INFO L93 Difference]: Finished difference Result 211727 states and 636009 transitions. [2022-01-18 02:42:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 02:42:28,538 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.6875) internal successors, (150), 32 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:42:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:29,260 INFO L225 Difference]: With dead ends: 211727 [2022-01-18 02:42:29,260 INFO L226 Difference]: Without dead ends: 211517 [2022-01-18 02:42:29,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2470 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1223, Invalid=6787, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 02:42:29,260 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 682 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:29,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 2288 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:42:29,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211517 states. [2022-01-18 02:42:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211517 to 199646. [2022-01-18 02:42:34,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199646 states, 199645 states have (on average 3.016854917478524) internal successors, (602300), 199645 states have internal predecessors, (602300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199646 states to 199646 states and 602300 transitions. [2022-01-18 02:42:35,801 INFO L78 Accepts]: Start accepts. Automaton has 199646 states and 602300 transitions. Word has length 79 [2022-01-18 02:42:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:35,801 INFO L470 AbstractCegarLoop]: Abstraction has 199646 states and 602300 transitions. [2022-01-18 02:42:35,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.6875) internal successors, (150), 32 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 199646 states and 602300 transitions. [2022-01-18 02:42:36,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:42:36,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:36,156 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:36,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-01-18 02:42:36,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:36,371 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:36,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:36,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1570864919, now seen corresponding path program 95 times [2022-01-18 02:42:36,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:36,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670221141] [2022-01-18 02:42:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:36,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:36,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:36,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670221141] [2022-01-18 02:42:36,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670221141] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:36,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829378012] [2022-01-18 02:42:36,504 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:42:36,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:36,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:36,505 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:36,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 02:42:36,604 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 02:42:36,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:42:36,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 02:42:36,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:36,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:37,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829378012] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:37,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:37,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 40 [2022-01-18 02:42:37,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512133801] [2022-01-18 02:42:37,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:37,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:42:37,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:37,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:42:37,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1255, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:42:37,360 INFO L87 Difference]: Start difference. First operand 199646 states and 602300 transitions. Second operand has 40 states, 40 states have (on average 3.725) internal successors, (149), 40 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:41,067 INFO L93 Difference]: Finished difference Result 266283 states and 796592 transitions. [2022-01-18 02:42:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 02:42:41,067 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.725) internal successors, (149), 40 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:42:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:41,991 INFO L225 Difference]: With dead ends: 266283 [2022-01-18 02:42:41,992 INFO L226 Difference]: Without dead ends: 266091 [2022-01-18 02:42:41,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3917 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2024, Invalid=9532, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 02:42:41,992 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 1011 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:41,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 2430 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:42:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266091 states. [2022-01-18 02:42:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266091 to 201578. [2022-01-18 02:42:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201578 states, 201577 states have (on average 3.0181270680682815) internal successors, (608385), 201577 states have internal predecessors, (608385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201578 states to 201578 states and 608385 transitions. [2022-01-18 02:42:48,706 INFO L78 Accepts]: Start accepts. Automaton has 201578 states and 608385 transitions. Word has length 79 [2022-01-18 02:42:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:48,706 INFO L470 AbstractCegarLoop]: Abstraction has 201578 states and 608385 transitions. [2022-01-18 02:42:48,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.725) internal successors, (149), 40 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 201578 states and 608385 transitions. [2022-01-18 02:42:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:42:49,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:49,022 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:49,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-01-18 02:42:49,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:49,223 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:49,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:49,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1712155709, now seen corresponding path program 96 times [2022-01-18 02:42:49,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:49,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634469239] [2022-01-18 02:42:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:49,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:49,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:49,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634469239] [2022-01-18 02:42:49,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634469239] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:49,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455951990] [2022-01-18 02:42:49,318 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:42:49,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:49,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:49,319 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:49,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 02:42:49,406 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 02:42:49,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:42:49,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:42:49,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:49,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:49,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455951990] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:49,980 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:49,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 31 [2022-01-18 02:42:49,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608913130] [2022-01-18 02:42:49,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:49,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:42:49,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:49,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:42:49,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:42:49,981 INFO L87 Difference]: Start difference. First operand 201578 states and 608385 transitions. Second operand has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:53,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:53,229 INFO L93 Difference]: Finished difference Result 226570 states and 682635 transitions. [2022-01-18 02:42:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-18 02:42:53,229 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:42:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:54,395 INFO L225 Difference]: With dead ends: 226570 [2022-01-18 02:42:54,395 INFO L226 Difference]: Without dead ends: 226540 [2022-01-18 02:42:54,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1462, Invalid=8438, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 02:42:54,396 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 544 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:54,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 2727 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:42:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226540 states. [2022-01-18 02:42:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226540 to 217362. [2022-01-18 02:42:59,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217362 states, 217361 states have (on average 3.023021609212324) internal successors, (657087), 217361 states have internal predecessors, (657087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:00,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217362 states to 217362 states and 657087 transitions. [2022-01-18 02:43:00,258 INFO L78 Accepts]: Start accepts. Automaton has 217362 states and 657087 transitions. Word has length 79 [2022-01-18 02:43:00,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:00,258 INFO L470 AbstractCegarLoop]: Abstraction has 217362 states and 657087 transitions. [2022-01-18 02:43:00,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:00,258 INFO L276 IsEmpty]: Start isEmpty. Operand 217362 states and 657087 transitions. [2022-01-18 02:43:00,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:43:00,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:00,602 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:00,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-01-18 02:43:00,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-01-18 02:43:00,803 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:43:00,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:00,804 INFO L85 PathProgramCache]: Analyzing trace with hash 173271895, now seen corresponding path program 97 times [2022-01-18 02:43:00,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:00,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393579129] [2022-01-18 02:43:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:00,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:00,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:00,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393579129] [2022-01-18 02:43:00,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393579129] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:00,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861521192] [2022-01-18 02:43:00,909 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:43:00,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:00,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:00,910 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:00,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 02:43:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:00,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:43:00,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:01,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:02,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861521192] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:02,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:02,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 34 [2022-01-18 02:43:02,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621423169] [2022-01-18 02:43:02,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:02,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-18 02:43:02,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-18 02:43:02,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 02:43:02,201 INFO L87 Difference]: Start difference. First operand 217362 states and 657087 transitions. Second operand has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:06,018 INFO L93 Difference]: Finished difference Result 259513 states and 783560 transitions. [2022-01-18 02:43:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-01-18 02:43:06,018 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:43:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:06,923 INFO L225 Difference]: With dead ends: 259513 [2022-01-18 02:43:06,924 INFO L226 Difference]: Without dead ends: 259453 [2022-01-18 02:43:06,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5615 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2027, Invalid=13723, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 02:43:06,924 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 861 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:06,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 2990 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:43:07,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259453 states. [2022-01-18 02:43:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259453 to 250566. [2022-01-18 02:43:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250566 states, 250565 states have (on average 3.030902161115878) internal successors, (759438), 250565 states have internal predecessors, (759438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250566 states to 250566 states and 759438 transitions. [2022-01-18 02:43:14,748 INFO L78 Accepts]: Start accepts. Automaton has 250566 states and 759438 transitions. Word has length 79 [2022-01-18 02:43:14,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:14,748 INFO L470 AbstractCegarLoop]: Abstraction has 250566 states and 759438 transitions. [2022-01-18 02:43:14,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.294117647058823) internal successors, (146), 34 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:14,748 INFO L276 IsEmpty]: Start isEmpty. Operand 250566 states and 759438 transitions. [2022-01-18 02:43:15,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:43:15,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:15,131 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:15,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-01-18 02:43:15,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:15,338 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:43:15,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:15,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1332594567, now seen corresponding path program 98 times [2022-01-18 02:43:15,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:15,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924075507] [2022-01-18 02:43:15,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:15,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:15,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:15,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924075507] [2022-01-18 02:43:15,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924075507] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:15,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664550512] [2022-01-18 02:43:15,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:43:15,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:15,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:15,460 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:15,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 02:43:15,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:43:15,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:15,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:43:15,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:15,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:16,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664550512] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:16,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:16,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2022-01-18 02:43:16,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794073587] [2022-01-18 02:43:16,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:16,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 02:43:16,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:16,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 02:43:16,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1014, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:43:16,150 INFO L87 Difference]: Start difference. First operand 250566 states and 759438 transitions. Second operand has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:19,520 INFO L93 Difference]: Finished difference Result 254517 states and 769611 transitions. [2022-01-18 02:43:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-18 02:43:19,520 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:43:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:20,777 INFO L225 Difference]: With dead ends: 254517 [2022-01-18 02:43:20,777 INFO L226 Difference]: Without dead ends: 254445 [2022-01-18 02:43:20,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1362, Invalid=8538, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 02:43:20,778 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 656 mSDsluCounter, 3014 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:20,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 3079 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:43:21,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254445 states. [2022-01-18 02:43:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254445 to 250566. [2022-01-18 02:43:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250566 states, 250565 states have (on average 3.0308223415081916) internal successors, (759418), 250565 states have internal predecessors, (759418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250566 states to 250566 states and 759418 transitions. [2022-01-18 02:43:27,906 INFO L78 Accepts]: Start accepts. Automaton has 250566 states and 759418 transitions. Word has length 79 [2022-01-18 02:43:27,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:27,907 INFO L470 AbstractCegarLoop]: Abstraction has 250566 states and 759418 transitions. [2022-01-18 02:43:27,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:27,907 INFO L276 IsEmpty]: Start isEmpty. Operand 250566 states and 759418 transitions. [2022-01-18 02:43:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:43:28,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:28,300 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:28,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-01-18 02:43:28,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:28,501 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:43:28,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:28,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1858806017, now seen corresponding path program 99 times [2022-01-18 02:43:28,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:28,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135731615] [2022-01-18 02:43:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:28,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:28,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:28,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135731615] [2022-01-18 02:43:28,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135731615] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:28,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180927005] [2022-01-18 02:43:28,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:43:28,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:28,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:28,592 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:28,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 02:43:28,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 02:43:28,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:28,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:43:28,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:28,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:29,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180927005] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:29,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:29,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 36 [2022-01-18 02:43:29,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271821392] [2022-01-18 02:43:29,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:29,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:43:29,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:29,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:43:29,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:43:29,347 INFO L87 Difference]: Start difference. First operand 250566 states and 759418 transitions. Second operand has 36 states, 36 states have (on average 4.333333333333333) internal successors, (156), 36 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:33,494 INFO L93 Difference]: Finished difference Result 292537 states and 885325 transitions. [2022-01-18 02:43:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 02:43:33,495 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.333333333333333) internal successors, (156), 36 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:43:33,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:34,503 INFO L225 Difference]: With dead ends: 292537 [2022-01-18 02:43:34,504 INFO L226 Difference]: Without dead ends: 292507 [2022-01-18 02:43:34,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4698 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2455, Invalid=10427, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 02:43:34,504 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 993 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:34,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 1914 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:43:34,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292507 states. [2022-01-18 02:43:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292507 to 255570. [2022-01-18 02:43:41,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255570 states, 255569 states have (on average 3.032726973928763) internal successors, (775071), 255569 states have internal predecessors, (775071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255570 states to 255570 states and 775071 transitions. [2022-01-18 02:43:42,575 INFO L78 Accepts]: Start accepts. Automaton has 255570 states and 775071 transitions. Word has length 79 [2022-01-18 02:43:42,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:42,575 INFO L470 AbstractCegarLoop]: Abstraction has 255570 states and 775071 transitions. [2022-01-18 02:43:42,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.333333333333333) internal successors, (156), 36 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:42,575 INFO L276 IsEmpty]: Start isEmpty. Operand 255570 states and 775071 transitions. [2022-01-18 02:43:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:43:43,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:43,019 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:43,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-01-18 02:43:43,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-01-18 02:43:43,220 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:43:43,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:43,220 INFO L85 PathProgramCache]: Analyzing trace with hash 319922203, now seen corresponding path program 100 times [2022-01-18 02:43:43,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:43,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202441400] [2022-01-18 02:43:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:43,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:43,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:43,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202441400] [2022-01-18 02:43:43,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202441400] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:43,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825507348] [2022-01-18 02:43:43,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:43:43,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:43,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:43,339 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:43,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 02:43:43,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:43:43,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:43,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 02:43:43,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:43,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:43:44,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825507348] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:44,043 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:44,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 35 [2022-01-18 02:43:44,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308761497] [2022-01-18 02:43:44,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:44,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 02:43:44,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:44,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 02:43:44,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:43:44,044 INFO L87 Difference]: Start difference. First operand 255570 states and 775071 transitions. Second operand has 35 states, 35 states have (on average 4.228571428571429) internal successors, (148), 35 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:48,442 INFO L93 Difference]: Finished difference Result 321352 states and 982273 transitions. [2022-01-18 02:43:48,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-18 02:43:48,443 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.228571428571429) internal successors, (148), 35 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:43:48,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:50,180 INFO L225 Difference]: With dead ends: 321352 [2022-01-18 02:43:50,180 INFO L226 Difference]: Without dead ends: 321304 [2022-01-18 02:43:50,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4959 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2294, Invalid=12226, Unknown=0, NotChecked=0, Total=14520 [2022-01-18 02:43:50,181 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 1028 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:50,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 1880 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:43:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321304 states. [2022-01-18 02:43:57,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321304 to 255942. [2022-01-18 02:43:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255942 states, 255941 states have (on average 3.0327536424410315) internal successors, (776206), 255941 states have internal predecessors, (776206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255942 states to 255942 states and 776206 transitions. [2022-01-18 02:43:58,886 INFO L78 Accepts]: Start accepts. Automaton has 255942 states and 776206 transitions. Word has length 79 [2022-01-18 02:43:58,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:58,886 INFO L470 AbstractCegarLoop]: Abstraction has 255942 states and 776206 transitions. [2022-01-18 02:43:58,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.228571428571429) internal successors, (148), 35 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand 255942 states and 776206 transitions. [2022-01-18 02:43:59,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:43:59,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:59,311 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:59,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-01-18 02:43:59,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-18 02:43:59,512 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:43:59,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:59,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1185944259, now seen corresponding path program 101 times [2022-01-18 02:43:59,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:59,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990854544] [2022-01-18 02:43:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:59,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:59,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:59,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990854544] [2022-01-18 02:43:59,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990854544] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:59,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781033546] [2022-01-18 02:43:59,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:43:59,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:59,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:59,630 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:59,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 02:43:59,718 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 02:43:59,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:59,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 02:43:59,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:00,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:00,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781033546] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:00,464 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:00,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 39 [2022-01-18 02:44:00,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681989263] [2022-01-18 02:44:00,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:00,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:44:00,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:00,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:44:00,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1231, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:44:00,465 INFO L87 Difference]: Start difference. First operand 255942 states and 776206 transitions. Second operand has 39 states, 39 states have (on average 3.769230769230769) internal successors, (147), 39 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:05,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:05,924 INFO L93 Difference]: Finished difference Result 347831 states and 1051349 transitions. [2022-01-18 02:44:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 02:44:05,924 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.769230769230769) internal successors, (147), 39 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:44:05,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:07,203 INFO L225 Difference]: With dead ends: 347831 [2022-01-18 02:44:07,203 INFO L226 Difference]: Without dead ends: 347687 [2022-01-18 02:44:07,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6118 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3060, Invalid=13970, Unknown=0, NotChecked=0, Total=17030 [2022-01-18 02:44:07,204 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 1235 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:07,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 2506 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:44:08,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347687 states. [2022-01-18 02:44:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347687 to 266962. [2022-01-18 02:44:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266962 states, 266961 states have (on average 3.034896483006881) internal successors, (810199), 266961 states have internal predecessors, (810199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:16,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266962 states to 266962 states and 810199 transitions. [2022-01-18 02:44:16,834 INFO L78 Accepts]: Start accepts. Automaton has 266962 states and 810199 transitions. Word has length 79 [2022-01-18 02:44:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:16,834 INFO L470 AbstractCegarLoop]: Abstraction has 266962 states and 810199 transitions. [2022-01-18 02:44:16,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.769230769230769) internal successors, (147), 39 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:16,834 INFO L276 IsEmpty]: Start isEmpty. Operand 266962 states and 810199 transitions. [2022-01-18 02:44:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-18 02:44:17,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:17,293 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:17,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-01-18 02:44:17,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:17,494 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:17,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:17,494 INFO L85 PathProgramCache]: Analyzing trace with hash 657711439, now seen corresponding path program 102 times [2022-01-18 02:44:17,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:17,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259986875] [2022-01-18 02:44:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:17,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:17,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:17,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259986875] [2022-01-18 02:44:17,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259986875] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:17,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854839923] [2022-01-18 02:44:17,616 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:44:17,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:17,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:17,617 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:17,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 02:44:17,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 02:44:17,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:17,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 02:44:17,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:17,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:18,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854839923] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:18,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:18,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 35 [2022-01-18 02:44:18,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494214180] [2022-01-18 02:44:18,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:18,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 02:44:18,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:18,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 02:44:18,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 02:44:18,370 INFO L87 Difference]: Start difference. First operand 266962 states and 810199 transitions. Second operand has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:22,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:22,090 INFO L93 Difference]: Finished difference Result 343332 states and 1033008 transitions. [2022-01-18 02:44:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 02:44:22,091 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-18 02:44:22,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:23,319 INFO L225 Difference]: With dead ends: 343332 [2022-01-18 02:44:23,320 INFO L226 Difference]: Without dead ends: 343212 [2022-01-18 02:44:23,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2111 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=993, Invalid=5813, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 02:44:23,320 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 627 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:23,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 2005 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:44:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343212 states. [2022-01-18 02:44:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343212 to 267290. [2022-01-18 02:44:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267290 states, 267289 states have (on average 3.0347713523564384) internal successors, (811161), 267289 states have internal predecessors, (811161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267290 states to 267290 states and 811161 transitions. [2022-01-18 02:44:32,867 INFO L78 Accepts]: Start accepts. Automaton has 267290 states and 811161 transitions. Word has length 79 [2022-01-18 02:44:32,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:32,867 INFO L470 AbstractCegarLoop]: Abstraction has 267290 states and 811161 transitions. [2022-01-18 02:44:32,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.171428571428572) internal successors, (146), 35 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:32,867 INFO L276 IsEmpty]: Start isEmpty. Operand 267290 states and 811161 transitions. [2022-01-18 02:44:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-18 02:44:33,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:33,386 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:33,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-01-18 02:44:33,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:33,586 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:33,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1319017343, now seen corresponding path program 103 times [2022-01-18 02:44:33,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:33,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855850757] [2022-01-18 02:44:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:33,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:33,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:33,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855850757] [2022-01-18 02:44:33,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855850757] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:33,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728944264] [2022-01-18 02:44:33,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:44:33,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:33,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:33,735 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:33,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 02:44:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:33,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 02:44:33,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:34,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:34,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728944264] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:34,638 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:34,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 15] total 39 [2022-01-18 02:44:34,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871126559] [2022-01-18 02:44:34,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:34,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:44:34,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:34,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:44:34,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:44:34,639 INFO L87 Difference]: Start difference. First operand 267290 states and 811161 transitions. Second operand has 39 states, 39 states have (on average 4.666666666666667) internal successors, (182), 39 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:39,315 INFO L93 Difference]: Finished difference Result 319233 states and 965094 transitions. [2022-01-18 02:44:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-18 02:44:39,315 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.666666666666667) internal successors, (182), 39 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-18 02:44:39,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:40,446 INFO L225 Difference]: With dead ends: 319233 [2022-01-18 02:44:40,446 INFO L226 Difference]: Without dead ends: 319158 [2022-01-18 02:44:40,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7572 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5103, Invalid=18153, Unknown=0, NotChecked=0, Total=23256 [2022-01-18 02:44:40,447 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 1420 mSDsluCounter, 3300 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:40,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1420 Valid, 3403 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:44:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319158 states. [2022-01-18 02:44:47,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319158 to 269876. [2022-01-18 02:44:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269876 states, 269875 states have (on average 3.034026864289023) internal successors, (818808), 269875 states have internal predecessors, (818808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269876 states to 269876 states and 818808 transitions. [2022-01-18 02:44:48,929 INFO L78 Accepts]: Start accepts. Automaton has 269876 states and 818808 transitions. Word has length 84 [2022-01-18 02:44:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:48,929 INFO L470 AbstractCegarLoop]: Abstraction has 269876 states and 818808 transitions. [2022-01-18 02:44:48,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.666666666666667) internal successors, (182), 39 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 269876 states and 818808 transitions. [2022-01-18 02:44:50,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-18 02:44:50,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:50,201 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:50,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-01-18 02:44:50,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-01-18 02:44:50,402 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:50,402 INFO L85 PathProgramCache]: Analyzing trace with hash 59278313, now seen corresponding path program 104 times [2022-01-18 02:44:50,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:50,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448602826] [2022-01-18 02:44:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:50,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:50,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:50,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448602826] [2022-01-18 02:44:50,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448602826] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:50,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389633134] [2022-01-18 02:44:50,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:44:50,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:50,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:50,556 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:50,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 02:44:50,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:44:50,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:50,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 02:44:50,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:50,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:51,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389633134] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:51,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:51,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 15] total 41 [2022-01-18 02:44:51,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508816999] [2022-01-18 02:44:51,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:51,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:44:51,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:51,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:44:51,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:44:51,398 INFO L87 Difference]: Start difference. First operand 269876 states and 818808 transitions. Second operand has 41 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 41 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:55,005 INFO L93 Difference]: Finished difference Result 307857 states and 932813 transitions. [2022-01-18 02:44:55,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 02:44:55,005 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 41 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-18 02:44:55,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:56,503 INFO L225 Difference]: With dead ends: 307857 [2022-01-18 02:44:56,504 INFO L226 Difference]: Without dead ends: 307782 [2022-01-18 02:44:56,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4984 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3168, Invalid=12582, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 02:44:56,504 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 915 mSDsluCounter, 3414 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:56,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 3482 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:44:56,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307782 states. [2022-01-18 02:45:03,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307782 to 269816. [2022-01-18 02:45:03,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269816 states, 269815 states have (on average 3.034060374701184) internal successors, (818635), 269815 states have internal predecessors, (818635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269816 states to 269816 states and 818635 transitions. [2022-01-18 02:45:05,468 INFO L78 Accepts]: Start accepts. Automaton has 269816 states and 818635 transitions. Word has length 84 [2022-01-18 02:45:05,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:05,469 INFO L470 AbstractCegarLoop]: Abstraction has 269816 states and 818635 transitions. [2022-01-18 02:45:05,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 41 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:05,469 INFO L276 IsEmpty]: Start isEmpty. Operand 269816 states and 818635 transitions. [2022-01-18 02:45:06,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-18 02:45:06,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:06,087 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:06,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-01-18 02:45:06,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-01-18 02:45:06,295 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:06,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1216501669, now seen corresponding path program 105 times [2022-01-18 02:45:06,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:06,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346176071] [2022-01-18 02:45:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:06,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:06,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:06,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346176071] [2022-01-18 02:45:06,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346176071] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:06,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954019737] [2022-01-18 02:45:06,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:45:06,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:06,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:06,469 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:06,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 02:45:06,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 02:45:06,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:06,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:45:06,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:06,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:07,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954019737] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:07,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:07,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 15] total 36 [2022-01-18 02:45:07,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782738430] [2022-01-18 02:45:07,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:07,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 02:45:07,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:07,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 02:45:07,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:45:07,175 INFO L87 Difference]: Start difference. First operand 269816 states and 818635 transitions. Second operand has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 36 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:12,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:12,536 INFO L93 Difference]: Finished difference Result 347546 states and 1053027 transitions. [2022-01-18 02:45:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-18 02:45:12,536 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 36 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-18 02:45:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:13,782 INFO L225 Difference]: With dead ends: 347546 [2022-01-18 02:45:13,782 INFO L226 Difference]: Without dead ends: 347456 [2022-01-18 02:45:13,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8691 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4282, Invalid=21478, Unknown=0, NotChecked=0, Total=25760 [2022-01-18 02:45:13,783 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 879 mSDsluCounter, 5145 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:13,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 5148 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:45:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347456 states. [2022-01-18 02:45:21,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347456 to 269776. [2022-01-18 02:45:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269776 states, 269775 states have (on average 3.0340876656472986) internal successors, (818521), 269775 states have internal predecessors, (818521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269776 states to 269776 states and 818521 transitions. [2022-01-18 02:45:23,374 INFO L78 Accepts]: Start accepts. Automaton has 269776 states and 818521 transitions. Word has length 84 [2022-01-18 02:45:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:23,375 INFO L470 AbstractCegarLoop]: Abstraction has 269776 states and 818521 transitions. [2022-01-18 02:45:23,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 36 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand 269776 states and 818521 transitions. [2022-01-18 02:45:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-18 02:45:23,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:23,909 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:23,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-01-18 02:45:24,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:24,109 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:24,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:24,110 INFO L85 PathProgramCache]: Analyzing trace with hash 605416033, now seen corresponding path program 106 times [2022-01-18 02:45:24,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:24,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088964656] [2022-01-18 02:45:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:24,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:24,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:24,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088964656] [2022-01-18 02:45:24,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088964656] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:24,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446392999] [2022-01-18 02:45:24,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:45:24,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:24,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:24,258 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:24,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-18 02:45:24,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:45:24,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:24,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 02:45:24,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:24,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:25,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446392999] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:25,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:25,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 42 [2022-01-18 02:45:25,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101787275] [2022-01-18 02:45:25,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:25,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 02:45:25,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:25,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 02:45:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1455, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 02:45:25,149 INFO L87 Difference]: Start difference. First operand 269776 states and 818521 transitions. Second operand has 42 states, 42 states have (on average 4.595238095238095) internal successors, (193), 42 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:31,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:31,293 INFO L93 Difference]: Finished difference Result 309911 states and 939181 transitions. [2022-01-18 02:45:31,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-01-18 02:45:31,293 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.595238095238095) internal successors, (193), 42 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-18 02:45:31,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:32,334 INFO L225 Difference]: With dead ends: 309911 [2022-01-18 02:45:32,334 INFO L226 Difference]: Without dead ends: 309866 [2022-01-18 02:45:32,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13834 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=7127, Invalid=32275, Unknown=0, NotChecked=0, Total=39402 [2022-01-18 02:45:32,336 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 1106 mSDsluCounter, 4875 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 4931 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:32,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 4931 Invalid, 2721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:45:33,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309866 states. [2022-01-18 02:45:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309866 to 269760. [2022-01-18 02:45:39,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269760 states, 269759 states have (on average 3.034104515511994) internal successors, (818477), 269759 states have internal predecessors, (818477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269760 states to 269760 states and 818477 transitions. [2022-01-18 02:45:41,630 INFO L78 Accepts]: Start accepts. Automaton has 269760 states and 818477 transitions. Word has length 84 [2022-01-18 02:45:41,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:41,630 INFO L470 AbstractCegarLoop]: Abstraction has 269760 states and 818477 transitions. [2022-01-18 02:45:41,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.595238095238095) internal successors, (193), 42 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:41,630 INFO L276 IsEmpty]: Start isEmpty. Operand 269760 states and 818477 transitions. [2022-01-18 02:45:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-18 02:45:42,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:42,163 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:42,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-01-18 02:45:42,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:42,363 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:42,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:42,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1616446435, now seen corresponding path program 107 times [2022-01-18 02:45:42,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:42,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109694189] [2022-01-18 02:45:42,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:42,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:42,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:42,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109694189] [2022-01-18 02:45:42,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109694189] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:42,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032683001] [2022-01-18 02:45:42,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:45:42,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:42,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:42,500 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:42,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-18 02:45:42,593 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 02:45:42,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:42,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 02:45:42,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:42,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:43,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032683001] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:43,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:43,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 15] total 38 [2022-01-18 02:45:43,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583334334] [2022-01-18 02:45:43,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:43,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:45:43,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:43,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:45:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:45:43,397 INFO L87 Difference]: Start difference. First operand 269760 states and 818477 transitions. Second operand has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:53,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:53,127 INFO L93 Difference]: Finished difference Result 305997 states and 926483 transitions. [2022-01-18 02:45:53,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2022-01-18 02:45:53,127 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-18 02:45:53,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:54,205 INFO L225 Difference]: With dead ends: 305997 [2022-01-18 02:45:54,205 INFO L226 Difference]: Without dead ends: 305982 [2022-01-18 02:45:54,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26326 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=11069, Invalid=56791, Unknown=0, NotChecked=0, Total=67860 [2022-01-18 02:45:54,208 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 1587 mSDsluCounter, 4927 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 4982 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:54,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 4982 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:45:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305982 states. [2022-01-18 02:46:01,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305982 to 269756. [2022-01-18 02:46:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269756 states, 269755 states have (on average 3.034093900020389) internal successors, (818462), 269755 states have internal predecessors, (818462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269756 states to 269756 states and 818462 transitions. [2022-01-18 02:46:02,708 INFO L78 Accepts]: Start accepts. Automaton has 269756 states and 818462 transitions. Word has length 84 [2022-01-18 02:46:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:46:02,708 INFO L470 AbstractCegarLoop]: Abstraction has 269756 states and 818462 transitions. [2022-01-18 02:46:02,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 269756 states and 818462 transitions. [2022-01-18 02:46:03,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-18 02:46:03,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:46:03,913 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:46:03,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2022-01-18 02:46:04,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2022-01-18 02:46:04,114 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:46:04,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:46:04,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1139637047, now seen corresponding path program 108 times [2022-01-18 02:46:04,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:46:04,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531977614] [2022-01-18 02:46:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:04,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:46:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:04,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:46:04,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531977614] [2022-01-18 02:46:04,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531977614] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:46:04,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092543442] [2022-01-18 02:46:04,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:46:04,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:04,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:46:04,247 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:46:04,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-18 02:46:04,343 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 02:46:04,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:46:04,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 02:46:04,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:46:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:04,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:05,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092543442] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:05,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:05,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 15] total 38 [2022-01-18 02:46:05,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963849692] [2022-01-18 02:46:05,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:05,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:46:05,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:46:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:46:05,124 INFO L87 Difference]: Start difference. First operand 269756 states and 818462 transitions. Second operand has 38 states, 38 states have (on average 4.578947368421052) internal successors, (174), 38 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:10,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:46:10,391 INFO L93 Difference]: Finished difference Result 299634 states and 908315 transitions. [2022-01-18 02:46:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-18 02:46:10,392 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.578947368421052) internal successors, (174), 38 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-18 02:46:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:46:11,869 INFO L225 Difference]: With dead ends: 299634 [2022-01-18 02:46:11,870 INFO L226 Difference]: Without dead ends: 299610 [2022-01-18 02:46:11,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7639 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4248, Invalid=19008, Unknown=0, NotChecked=0, Total=23256 [2022-01-18 02:46:11,871 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 1505 mSDsluCounter, 4208 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 4245 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:46:11,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 4245 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:46:12,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299610 states. [2022-01-18 02:46:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299610 to 269748. [2022-01-18 02:46:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269748 states, 269747 states have (on average 3.034072668092694) internal successors, (818432), 269747 states have internal predecessors, (818432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269748 states to 269748 states and 818432 transitions. [2022-01-18 02:46:20,756 INFO L78 Accepts]: Start accepts. Automaton has 269748 states and 818432 transitions. Word has length 84 [2022-01-18 02:46:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:46:20,757 INFO L470 AbstractCegarLoop]: Abstraction has 269748 states and 818432 transitions. [2022-01-18 02:46:20,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.578947368421052) internal successors, (174), 38 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 269748 states and 818432 transitions. [2022-01-18 02:46:21,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-18 02:46:21,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:46:21,389 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:46:21,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-01-18 02:46:21,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-01-18 02:46:21,603 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:46:21,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:46:21,604 INFO L85 PathProgramCache]: Analyzing trace with hash 6236905, now seen corresponding path program 109 times [2022-01-18 02:46:21,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:46:21,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941499127] [2022-01-18 02:46:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:21,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:46:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:21,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:46:21,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941499127] [2022-01-18 02:46:21,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941499127] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:46:21,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261457312] [2022-01-18 02:46:21,799 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:46:21,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:21,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:46:21,800 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:46:21,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-18 02:46:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:21,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 02:46:21,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:46:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:22,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:22,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261457312] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:22,856 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:22,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 15] total 42 [2022-01-18 02:46:22,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995730818] [2022-01-18 02:46:22,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:22,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 02:46:22,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:22,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 02:46:22,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1457, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 02:46:22,857 INFO L87 Difference]: Start difference. First operand 269748 states and 818432 transitions. Second operand has 42 states, 42 states have (on average 4.642857142857143) internal successors, (195), 42 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:46:27,000 INFO L93 Difference]: Finished difference Result 299105 states and 907797 transitions. [2022-01-18 02:46:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 02:46:27,001 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.642857142857143) internal successors, (195), 42 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-18 02:46:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:46:28,047 INFO L225 Difference]: With dead ends: 299105 [2022-01-18 02:46:28,047 INFO L226 Difference]: Without dead ends: 299030 [2022-01-18 02:46:28,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3951 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2492, Invalid=10390, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 02:46:28,048 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 767 mSDsluCounter, 4015 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 4048 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:46:28,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 4048 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:46:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299030 states. [2022-01-18 02:46:34,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299030 to 269700. [2022-01-18 02:46:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269700 states, 269699 states have (on average 3.0340342381692182) internal successors, (818276), 269699 states have internal predecessors, (818276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:36,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269700 states to 269700 states and 818276 transitions. [2022-01-18 02:46:36,620 INFO L78 Accepts]: Start accepts. Automaton has 269700 states and 818276 transitions. Word has length 84 [2022-01-18 02:46:36,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:46:36,620 INFO L470 AbstractCegarLoop]: Abstraction has 269700 states and 818276 transitions. [2022-01-18 02:46:36,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.642857142857143) internal successors, (195), 42 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:36,621 INFO L276 IsEmpty]: Start isEmpty. Operand 269700 states and 818276 transitions. [2022-01-18 02:46:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-18 02:46:37,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:46:37,158 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:46:37,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-01-18 02:46:37,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-01-18 02:46:37,359 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:46:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:46:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1163460261, now seen corresponding path program 110 times [2022-01-18 02:46:37,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:46:37,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52885923] [2022-01-18 02:46:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:37,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:46:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:37,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:46:37,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52885923] [2022-01-18 02:46:37,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52885923] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:46:37,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424687058] [2022-01-18 02:46:37,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:46:37,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:37,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:46:37,508 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:46:37,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-18 02:46:37,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:46:37,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:46:37,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 02:46:37,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:46:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:37,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:38,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424687058] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:38,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:38,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 43 [2022-01-18 02:46:38,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741511027] [2022-01-18 02:46:38,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:38,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 02:46:38,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:38,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 02:46:38,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1544, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 02:46:38,377 INFO L87 Difference]: Start difference. First operand 269700 states and 818276 transitions. Second operand has 43 states, 43 states have (on average 4.534883720930233) internal successors, (195), 43 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:45,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:46:45,045 INFO L93 Difference]: Finished difference Result 313469 states and 949129 transitions. [2022-01-18 02:46:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-01-18 02:46:45,045 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.534883720930233) internal successors, (195), 43 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-18 02:46:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:46:46,566 INFO L225 Difference]: With dead ends: 313469 [2022-01-18 02:46:46,567 INFO L226 Difference]: Without dead ends: 313229 [2022-01-18 02:46:46,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13884 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=8606, Invalid=31996, Unknown=0, NotChecked=0, Total=40602 [2022-01-18 02:46:46,568 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 1096 mSDsluCounter, 4644 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 4660 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:46:46,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 4660 Invalid, 2740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:46:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313229 states. [2022-01-18 02:46:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313229 to 272768. [2022-01-18 02:46:53,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272768 states, 272767 states have (on average 3.032775225742117) internal successors, (827241), 272767 states have internal predecessors, (827241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272768 states to 272768 states and 827241 transitions. [2022-01-18 02:46:55,251 INFO L78 Accepts]: Start accepts. Automaton has 272768 states and 827241 transitions. Word has length 84 [2022-01-18 02:46:55,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:46:55,251 INFO L470 AbstractCegarLoop]: Abstraction has 272768 states and 827241 transitions. [2022-01-18 02:46:55,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.534883720930233) internal successors, (195), 43 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:55,251 INFO L276 IsEmpty]: Start isEmpty. Operand 272768 states and 827241 transitions. [2022-01-18 02:46:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-18 02:46:55,797 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:46:55,797 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:46:55,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-01-18 02:46:55,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-01-18 02:46:55,997 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:46:55,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:46:55,998 INFO L85 PathProgramCache]: Analyzing trace with hash 552374625, now seen corresponding path program 111 times [2022-01-18 02:46:55,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:46:55,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065405627] [2022-01-18 02:46:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:55,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:46:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:56,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:46:56,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065405627] [2022-01-18 02:46:56,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065405627] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:46:56,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993892739] [2022-01-18 02:46:56,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:46:56,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:56,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:46:56,171 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:46:56,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-18 02:46:56,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 02:46:56,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:46:56,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 02:46:56,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:46:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:56,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:57,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993892739] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:57,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:57,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 16] total 42 [2022-01-18 02:46:57,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928763830] [2022-01-18 02:46:57,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:57,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 02:46:57,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:57,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 02:46:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1475, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 02:46:57,638 INFO L87 Difference]: Start difference. First operand 272768 states and 827241 transitions. Second operand has 42 states, 42 states have (on average 4.642857142857143) internal successors, (195), 42 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:47:06,339 INFO L93 Difference]: Finished difference Result 309829 states and 937539 transitions. [2022-01-18 02:47:06,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2022-01-18 02:47:06,340 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.642857142857143) internal successors, (195), 42 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-18 02:47:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:47:07,461 INFO L225 Difference]: With dead ends: 309829 [2022-01-18 02:47:07,462 INFO L226 Difference]: Without dead ends: 309709 [2022-01-18 02:47:07,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24922 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=12955, Invalid=53867, Unknown=0, NotChecked=0, Total=66822 [2022-01-18 02:47:07,464 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 1125 mSDsluCounter, 7282 mSDsCounter, 0 mSdLazyCounter, 3684 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 7203 SdHoareTripleChecker+Invalid, 3872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 3684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:47:07,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 7203 Invalid, 3872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 3684 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 02:47:07,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309709 states. [2022-01-18 02:47:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309709 to 272924. [2022-01-18 02:47:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272924 states, 272923 states have (on average 3.03292137342767) internal successors, (827754), 272923 states have internal predecessors, (827754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:15,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272924 states to 272924 states and 827754 transitions. [2022-01-18 02:47:15,932 INFO L78 Accepts]: Start accepts. Automaton has 272924 states and 827754 transitions. Word has length 84 [2022-01-18 02:47:15,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:47:15,932 INFO L470 AbstractCegarLoop]: Abstraction has 272924 states and 827754 transitions. [2022-01-18 02:47:15,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.642857142857143) internal successors, (195), 42 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:15,932 INFO L276 IsEmpty]: Start isEmpty. Operand 272924 states and 827754 transitions. [2022-01-18 02:47:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-18 02:47:17,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:47:17,229 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:47:17,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-01-18 02:47:17,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:47:17,431 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:47:17,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:47:17,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1669487843, now seen corresponding path program 112 times [2022-01-18 02:47:17,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:47:17,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418217450] [2022-01-18 02:47:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:17,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:47:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:17,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:47:17,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418217450] [2022-01-18 02:47:17,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418217450] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:47:17,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569767806] [2022-01-18 02:47:17,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:47:17,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:47:17,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:47:17,577 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:47:17,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-18 02:47:17,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:47:17,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:47:17,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 02:47:17,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:47:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:17,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:47:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:18,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569767806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:47:18,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:47:18,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 15] total 39 [2022-01-18 02:47:18,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975236569] [2022-01-18 02:47:18,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:47:18,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:47:18,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:47:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:47:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1235, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:47:18,511 INFO L87 Difference]: Start difference. First operand 272924 states and 827754 transitions. Second operand has 39 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:47:27,529 INFO L93 Difference]: Finished difference Result 301927 states and 914076 transitions. [2022-01-18 02:47:27,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2022-01-18 02:47:27,530 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-18 02:47:27,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:47:29,024 INFO L225 Difference]: With dead ends: 301927 [2022-01-18 02:47:29,024 INFO L226 Difference]: Without dead ends: 301897 [2022-01-18 02:47:29,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26004 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=12360, Invalid=55500, Unknown=0, NotChecked=0, Total=67860 [2022-01-18 02:47:29,026 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 1728 mSDsluCounter, 5267 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 5332 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:47:29,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1728 Valid, 5332 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 02:47:29,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301897 states. [2022-01-18 02:47:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301897 to 272988. [2022-01-18 02:47:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272988 states, 272987 states have (on average 3.033060182353006) internal successors, (827986), 272987 states have internal predecessors, (827986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272988 states to 272988 states and 827986 transitions. [2022-01-18 02:47:38,364 INFO L78 Accepts]: Start accepts. Automaton has 272988 states and 827986 transitions. Word has length 84 [2022-01-18 02:47:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:47:38,364 INFO L470 AbstractCegarLoop]: Abstraction has 272988 states and 827986 transitions. [2022-01-18 02:47:38,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:38,365 INFO L276 IsEmpty]: Start isEmpty. Operand 272988 states and 827986 transitions. [2022-01-18 02:47:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-18 02:47:38,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:47:38,961 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:47:38,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-01-18 02:47:39,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:47:39,175 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:47:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:47:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1086595639, now seen corresponding path program 113 times [2022-01-18 02:47:39,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:47:39,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006748407] [2022-01-18 02:47:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:39,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:47:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 23 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:39,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:47:39,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006748407] [2022-01-18 02:47:39,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006748407] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:47:39,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279329352] [2022-01-18 02:47:39,336 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:47:39,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:47:39,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:47:39,337 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:47:39,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-18 02:47:39,462 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 02:47:39,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:47:39,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 02:47:39,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:47:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:39,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:47:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:40,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279329352] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:47:40,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:47:40,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 37 [2022-01-18 02:47:40,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546463919] [2022-01-18 02:47:40,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:47:40,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 02:47:40,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:47:40,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 02:47:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1130, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 02:47:40,111 INFO L87 Difference]: Start difference. First operand 272988 states and 827986 transitions. Second operand has 37 states, 37 states have (on average 4.054054054054054) internal successors, (150), 37 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:49,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:47:49,193 INFO L93 Difference]: Finished difference Result 434615 states and 1308530 transitions. [2022-01-18 02:47:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2022-01-18 02:47:49,194 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.054054054054054) internal successors, (150), 37 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-18 02:47:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:47:50,815 INFO L225 Difference]: With dead ends: 434615 [2022-01-18 02:47:50,816 INFO L226 Difference]: Without dead ends: 434567 [2022-01-18 02:47:50,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28281 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=13071, Invalid=60641, Unknown=0, NotChecked=0, Total=73712 [2022-01-18 02:47:50,818 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1172 mSDsluCounter, 6108 mSDsCounter, 0 mSdLazyCounter, 3300 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 6112 SdHoareTripleChecker+Invalid, 3503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 3300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:47:50,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 6112 Invalid, 3503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 3300 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] Received shutdown request... [2022-01-18 02:47:51,511 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:47:51,511 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:47:51,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434567 states. [2022-01-18 02:47:51,750 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 02:47:51,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-01-18 02:47:51,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-01-18 02:47:51,950 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2022-01-18 02:47:51,952 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 02:47:51,952 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 02:47:51,955 INFO L732 BasicCegarLoop]: Path program histogram: [113, 2, 1, 1] [2022-01-18 02:47:51,956 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 02:47:51,956 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 02:47:51,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 02:47:51 BasicIcfg [2022-01-18 02:47:51,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 02:47:51,957 INFO L158 Benchmark]: Toolchain (without parser) took 697816.22ms. Allocated memory was 360.7MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 307.0MB in the beginning and 12.7GB in the end (delta: -12.4GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2022-01-18 02:47:51,957 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 324.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:47:51,957 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.90ms. Allocated memory is still 360.7MB. Free memory was 306.9MB in the beginning and 332.9MB in the end (delta: -26.0MB). Peak memory consumption was 15.6MB. Max. memory is 16.0GB. [2022-01-18 02:47:51,957 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.72ms. Allocated memory is still 360.7MB. Free memory was 332.9MB in the beginning and 330.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 02:47:51,957 INFO L158 Benchmark]: Boogie Preprocessor took 13.61ms. Allocated memory is still 360.7MB. Free memory was 330.8MB in the beginning and 329.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:47:51,958 INFO L158 Benchmark]: RCFGBuilder took 221.77ms. Allocated memory is still 360.7MB. Free memory was 329.8MB in the beginning and 316.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 02:47:51,958 INFO L158 Benchmark]: TraceAbstraction took 697357.39ms. Allocated memory was 360.7MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 315.1MB in the beginning and 12.7GB in the end (delta: -12.4GB). Peak memory consumption was 3.9GB. Max. memory is 16.0GB. [2022-01-18 02:47:51,958 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 324.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 190.90ms. Allocated memory is still 360.7MB. Free memory was 306.9MB in the beginning and 332.9MB in the end (delta: -26.0MB). Peak memory consumption was 15.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 23.72ms. Allocated memory is still 360.7MB. Free memory was 332.9MB in the beginning and 330.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 13.61ms. Allocated memory is still 360.7MB. Free memory was 330.8MB in the beginning and 329.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 221.77ms. Allocated memory is still 360.7MB. Free memory was 329.8MB in the beginning and 316.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 697357.39ms. Allocated memory was 360.7MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 315.1MB in the beginning and 12.7GB in the end (delta: -12.4GB). Peak memory consumption was 3.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 94 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 697.3s, OverallIterations: 117, TraceHistogramMax: 4, PathProgramHistogramMax: 113, EmptinessCheckTime: 17.9s, AutomataDifference: 324.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98673 SdHoareTripleChecker+Valid, 57.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98673 mSDsluCounter, 301195 SdHoareTripleChecker+Invalid, 47.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 294450 mSDsCounter, 17835 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 156086 IncrementalHoareTripleChecker+Invalid, 173921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17835 mSolverCounterUnsat, 21558 mSDtfsCounter, 156086 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28816 GetRequests, 16214 SyntacticMatches, 141 SemanticMatches, 12461 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643819 ImplicationChecksByTransitivity, 188.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272988occurred in iteration=116, InterpolantAutomatonStates: 10391, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 244.7s AutomataMinimizationTime, 117 MinimizatonAttempts, 1807650 StatesRemovedByMinimization, 115 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 76.3s InterpolantComputationTime, 17612 NumberOfCodeBlocks, 17512 NumberOfCodeBlocksAsserted, 456 NumberOfCheckSat, 25951 ConstructedInterpolants, 0 QuantifiedInterpolants, 111839 SizeOfPredicates, 1318 NumberOfNonLiveVariables, 18564 ConjunctsInSsa, 1479 ConjunctsInUnsatCore, 346 InterpolantComputations, 3 PerfectInterpolantSequences, 2576/7307 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown