/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 20:26:19,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 20:26:19,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 20:26:19,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 20:26:19,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 20:26:19,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 20:26:19,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 20:26:19,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 20:26:19,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 20:26:19,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 20:26:19,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 20:26:19,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 20:26:19,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 20:26:19,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 20:26:19,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 20:26:19,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 20:26:19,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 20:26:19,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 20:26:19,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 20:26:19,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 20:26:19,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 20:26:19,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 20:26:19,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 20:26:19,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 20:26:19,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 20:26:19,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 20:26:19,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 20:26:19,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 20:26:19,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 20:26:19,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 20:26:19,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 20:26:19,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 20:26:19,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 20:26:19,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 20:26:19,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 20:26:19,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 20:26:19,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-11 20:26:19,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 20:26:19,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 20:26:19,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 20:26:19,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 20:26:19,562 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 20:26:19,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 20:26:19,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 20:26:19,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 20:26:19,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 20:26:19,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 20:26:19,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 20:26:19,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 20:26:19,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 20:26:19,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 20:26:19,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 20:26:19,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 20:26:19,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 20:26:19,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 20:26:19,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 20:26:19,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 20:26:19,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 20:26:19,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:26:19,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 20:26:19,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 20:26:19,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 20:26:19,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 20:26:19,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 20:26:19,567 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 20:26:19,567 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 20:26:19,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 20:26:19,568 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 20:26:20,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 20:26:20,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 20:26:20,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 20:26:20,056 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 20:26:20,057 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 20:26:20,058 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2020-09-11 20:26:20,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f29f6e7eb/2ef4844fc3f74803874b08083669372d/FLAG1088f128d [2020-09-11 20:26:20,753 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 20:26:20,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2020-09-11 20:26:20,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f29f6e7eb/2ef4844fc3f74803874b08083669372d/FLAG1088f128d [2020-09-11 20:26:21,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f29f6e7eb/2ef4844fc3f74803874b08083669372d [2020-09-11 20:26:21,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 20:26:21,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 20:26:21,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 20:26:21,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 20:26:21,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 20:26:21,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:26:21" (1/1) ... [2020-09-11 20:26:21,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683fe2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21, skipping insertion in model container [2020-09-11 20:26:21,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:26:21" (1/1) ... [2020-09-11 20:26:21,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 20:26:21,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 20:26:21,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:26:21,650 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 20:26:21,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 20:26:21,819 INFO L208 MainTranslator]: Completed translation [2020-09-11 20:26:21,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21 WrapperNode [2020-09-11 20:26:21,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 20:26:21,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 20:26:21,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 20:26:21,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 20:26:21,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21" (1/1) ... [2020-09-11 20:26:21,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21" (1/1) ... [2020-09-11 20:26:21,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 20:26:21,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 20:26:21,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 20:26:21,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 20:26:21,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21" (1/1) ... [2020-09-11 20:26:21,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21" (1/1) ... [2020-09-11 20:26:21,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21" (1/1) ... [2020-09-11 20:26:21,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21" (1/1) ... [2020-09-11 20:26:21,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21" (1/1) ... [2020-09-11 20:26:21,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21" (1/1) ... [2020-09-11 20:26:21,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21" (1/1) ... [2020-09-11 20:26:21,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 20:26:21,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 20:26:21,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 20:26:21,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 20:26:21,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 20:26:22,013 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2020-09-11 20:26:22,014 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2020-09-11 20:26:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-11 20:26:22,015 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2020-09-11 20:26:22,016 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2020-09-11 20:26:22,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 20:26:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-09-11 20:26:22,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 20:26:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 20:26:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-11 20:26:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 20:26:22,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 20:26:22,021 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 20:26:22,486 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 20:26:22,486 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-11 20:26:22,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:26:22 BoogieIcfgContainer [2020-09-11 20:26:22,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 20:26:22,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 20:26:22,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 20:26:22,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 20:26:22,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:26:21" (1/3) ... [2020-09-11 20:26:22,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac09c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:26:22, skipping insertion in model container [2020-09-11 20:26:22,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:26:21" (2/3) ... [2020-09-11 20:26:22,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac09c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:26:22, skipping insertion in model container [2020-09-11 20:26:22,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:26:22" (3/3) ... [2020-09-11 20:26:22,502 INFO L109 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2020-09-11 20:26:22,514 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 20:26:22,514 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 20:26:22,525 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-11 20:26:22,526 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 20:26:22,556 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,556 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,556 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,557 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,557 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,557 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,558 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,558 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,559 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,559 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,560 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,560 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,560 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,560 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,561 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,561 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,561 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,562 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,566 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,566 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,567 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,567 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,567 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,567 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,575 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,575 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,575 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,576 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,576 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 20:26:22,614 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-11 20:26:22,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 20:26:22,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 20:26:22,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 20:26:22,637 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 20:26:22,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 20:26:22,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 20:26:22,637 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 20:26:22,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 20:26:22,656 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 84 transitions, 190 flow [2020-09-11 20:26:22,659 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 84 transitions, 190 flow [2020-09-11 20:26:22,712 INFO L129 PetriNetUnfolder]: 6/84 cut-off events. [2020-09-11 20:26:22,713 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-11 20:26:22,719 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 84 events. 6/84 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 54. Up to 3 conditions per place. [2020-09-11 20:26:22,722 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 84 transitions, 190 flow [2020-09-11 20:26:22,746 INFO L129 PetriNetUnfolder]: 6/84 cut-off events. [2020-09-11 20:26:22,746 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-11 20:26:22,747 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 84 events. 6/84 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 54. Up to 3 conditions per place. [2020-09-11 20:26:22,749 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 886 [2020-09-11 20:26:22,751 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 20:26:24,375 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-11 20:26:24,920 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2020-09-11 20:26:25,138 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-09-11 20:26:25,149 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2843 [2020-09-11 20:26:25,149 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-11 20:26:25,154 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 32 transitions, 86 flow [2020-09-11 20:26:25,177 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 218 states. [2020-09-11 20:26:25,180 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states. [2020-09-11 20:26:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-09-11 20:26:25,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:26:25,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-09-11 20:26:25,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:26:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:26:25,199 INFO L82 PathProgramCache]: Analyzing trace with hash 293912045, now seen corresponding path program 1 times [2020-09-11 20:26:25,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:26:25,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621629658] [2020-09-11 20:26:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:26:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:26:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:26:25,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621629658] [2020-09-11 20:26:25,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:26:25,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:26:25,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1837837211] [2020-09-11 20:26:25,461 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:26:25,464 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:26:25,481 INFO L274 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-09-11 20:26:25,482 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:26:25,484 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:26:25,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:26:25,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:26:25,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:26:25,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:26:25,504 INFO L87 Difference]: Start difference. First operand 218 states. Second operand 3 states. [2020-09-11 20:26:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:26:25,541 INFO L93 Difference]: Finished difference Result 218 states and 483 transitions. [2020-09-11 20:26:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:26:25,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-09-11 20:26:25,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:26:25,561 INFO L225 Difference]: With dead ends: 218 [2020-09-11 20:26:25,561 INFO L226 Difference]: Without dead ends: 188 [2020-09-11 20:26:25,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:26:25,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-11 20:26:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-09-11 20:26:25,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-11 20:26:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 412 transitions. [2020-09-11 20:26:25,631 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 412 transitions. Word has length 5 [2020-09-11 20:26:25,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:26:25,631 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 412 transitions. [2020-09-11 20:26:25,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:26:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 412 transitions. [2020-09-11 20:26:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 20:26:25,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:26:25,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:26:25,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 20:26:25,633 INFO L427 AbstractCegarLoop]: === Iteration 2 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:26:25,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:26:25,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2033676981, now seen corresponding path program 1 times [2020-09-11 20:26:25,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:26:25,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886123300] [2020-09-11 20:26:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:26:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:26:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:26:25,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886123300] [2020-09-11 20:26:25,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:26:25,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:26:25,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [100880431] [2020-09-11 20:26:25,724 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:26:25,725 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:26:25,726 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 20:26:25,726 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:26:25,726 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:26:25,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:26:25,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:26:25,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:26:25,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:26:25,729 INFO L87 Difference]: Start difference. First operand 188 states and 412 transitions. Second operand 3 states. [2020-09-11 20:26:25,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:26:25,761 INFO L93 Difference]: Finished difference Result 207 states and 431 transitions. [2020-09-11 20:26:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:26:25,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 20:26:25,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:26:25,764 INFO L225 Difference]: With dead ends: 207 [2020-09-11 20:26:25,764 INFO L226 Difference]: Without dead ends: 175 [2020-09-11 20:26:25,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:26:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-11 20:26:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2020-09-11 20:26:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-11 20:26:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 339 transitions. [2020-09-11 20:26:25,782 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 339 transitions. Word has length 8 [2020-09-11 20:26:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:26:25,783 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 339 transitions. [2020-09-11 20:26:25,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:26:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 339 transitions. [2020-09-11 20:26:25,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 20:26:25,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:26:25,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:26:25,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 20:26:25,785 INFO L427 AbstractCegarLoop]: === Iteration 3 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:26:25,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:26:25,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1494763716, now seen corresponding path program 1 times [2020-09-11 20:26:25,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:26:25,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760986774] [2020-09-11 20:26:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:26:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:26:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:26:25,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760986774] [2020-09-11 20:26:25,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:26:25,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 20:26:25,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1917487416] [2020-09-11 20:26:25,882 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:26:25,883 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:26:25,884 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 20:26:25,884 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:26:25,884 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:26:25,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:26:25,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:26:25,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:26:25,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:26:25,885 INFO L87 Difference]: Start difference. First operand 157 states and 339 transitions. Second operand 3 states. [2020-09-11 20:26:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:26:25,905 INFO L93 Difference]: Finished difference Result 154 states and 316 transitions. [2020-09-11 20:26:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:26:25,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 20:26:25,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:26:25,907 INFO L225 Difference]: With dead ends: 154 [2020-09-11 20:26:25,907 INFO L226 Difference]: Without dead ends: 100 [2020-09-11 20:26:25,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:26:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-11 20:26:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-09-11 20:26:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-11 20:26:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 189 transitions. [2020-09-11 20:26:25,915 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 189 transitions. Word has length 8 [2020-09-11 20:26:25,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:26:25,916 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 189 transitions. [2020-09-11 20:26:25,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:26:25,916 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 189 transitions. [2020-09-11 20:26:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 20:26:25,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:26:25,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:26:25,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 20:26:25,918 INFO L427 AbstractCegarLoop]: === Iteration 4 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:26:25,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:26:25,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1061881055, now seen corresponding path program 1 times [2020-09-11 20:26:25,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:26:25,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968918495] [2020-09-11 20:26:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:26:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:26:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:26:25,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968918495] [2020-09-11 20:26:25,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:26:25,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:26:25,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1691572921] [2020-09-11 20:26:25,996 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:26:25,998 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:26:26,002 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-09-11 20:26:26,002 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:26:26,052 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2004#(not (= (select (select |#pthreadsMutex| |~#m_busy~0.base|) |~#m_busy~0.offset|) 0))] [2020-09-11 20:26:26,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 20:26:26,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:26:26,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 20:26:26,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:26:26,053 INFO L87 Difference]: Start difference. First operand 100 states and 189 transitions. Second operand 4 states. [2020-09-11 20:26:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:26:26,090 INFO L93 Difference]: Finished difference Result 88 states and 153 transitions. [2020-09-11 20:26:26,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:26:26,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 20:26:26,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:26:26,092 INFO L225 Difference]: With dead ends: 88 [2020-09-11 20:26:26,092 INFO L226 Difference]: Without dead ends: 76 [2020-09-11 20:26:26,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 20:26:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-11 20:26:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-11 20:26:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-11 20:26:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 129 transitions. [2020-09-11 20:26:26,097 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 129 transitions. Word has length 13 [2020-09-11 20:26:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:26:26,098 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 129 transitions. [2020-09-11 20:26:26,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 20:26:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 129 transitions. [2020-09-11 20:26:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 20:26:26,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 20:26:26,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 20:26:26,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 20:26:26,100 INFO L427 AbstractCegarLoop]: === Iteration 5 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 20:26:26,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 20:26:26,100 INFO L82 PathProgramCache]: Analyzing trace with hash 9063593, now seen corresponding path program 2 times [2020-09-11 20:26:26,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 20:26:26,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448027342] [2020-09-11 20:26:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 20:26:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 20:26:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 20:26:26,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448027342] [2020-09-11 20:26:26,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 20:26:26,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 20:26:26,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1158896008] [2020-09-11 20:26:26,158 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 20:26:26,159 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 20:26:26,163 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-09-11 20:26:26,163 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 20:26:26,190 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 20:26:26,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 20:26:26,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 20:26:26,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 20:26:26,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:26:26,191 INFO L87 Difference]: Start difference. First operand 76 states and 129 transitions. Second operand 3 states. [2020-09-11 20:26:26,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 20:26:26,198 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2020-09-11 20:26:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 20:26:26,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-11 20:26:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 20:26:26,199 INFO L225 Difference]: With dead ends: 30 [2020-09-11 20:26:26,199 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 20:26:26,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 20:26:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 20:26:26,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 20:26:26,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 20:26:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 20:26:26,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-09-11 20:26:26,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 20:26:26,201 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 20:26:26,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 20:26:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 20:26:26,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 20:26:26,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 20:26:26,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 08:26:26 BasicIcfg [2020-09-11 20:26:26,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 20:26:26,209 INFO L168 Benchmark]: Toolchain (without parser) took 5186.85 ms. Allocated memory was 148.9 MB in the beginning and 245.9 MB in the end (delta: 97.0 MB). Free memory was 102.5 MB in the beginning and 121.9 MB in the end (delta: -19.4 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:26,210 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 20:26:26,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 792.72 ms. Allocated memory was 148.9 MB in the beginning and 206.6 MB in the end (delta: 57.7 MB). Free memory was 101.9 MB in the beginning and 165.8 MB in the end (delta: -64.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:26,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.27 ms. Allocated memory is still 206.6 MB. Free memory was 165.8 MB in the beginning and 163.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:26,213 INFO L168 Benchmark]: Boogie Preprocessor took 32.23 ms. Allocated memory is still 206.6 MB. Free memory was 163.9 MB in the beginning and 162.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:26,214 INFO L168 Benchmark]: RCFGBuilder took 573.18 ms. Allocated memory is still 206.6 MB. Free memory was 162.0 MB in the beginning and 138.1 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:26,215 INFO L168 Benchmark]: TraceAbstraction took 3714.00 ms. Allocated memory was 206.6 MB in the beginning and 245.9 MB in the end (delta: 39.3 MB). Free memory was 137.5 MB in the beginning and 121.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-09-11 20:26:26,219 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 792.72 ms. Allocated memory was 148.9 MB in the beginning and 206.6 MB in the end (delta: 57.7 MB). Free memory was 101.9 MB in the beginning and 165.8 MB in the end (delta: -64.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.27 ms. Allocated memory is still 206.6 MB. Free memory was 165.8 MB in the beginning and 163.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.23 ms. Allocated memory is still 206.6 MB. Free memory was 163.9 MB in the beginning and 162.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 573.18 ms. Allocated memory is still 206.6 MB. Free memory was 162.0 MB in the beginning and 138.1 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3714.00 ms. Allocated memory was 206.6 MB in the beginning and 245.9 MB in the end (delta: 39.3 MB). Free memory was 137.5 MB in the beginning and 121.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.4s, 84 ProgramPointsBefore, 35 ProgramPointsAfterwards, 84 TransitionsBefore, 32 TransitionsAfterwards, 886 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 2 ConcurrentYvCompositions, 3 ChoiceCompositions, 390 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2843 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 691]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 699]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 128 SDtfs, 62 SDslu, 81 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 694 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...