/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-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:35:26,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:35:26,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:35:26,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:35:26,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:35:26,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:35:26,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:35:26,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:35:26,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:35:26,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:35:26,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:35:26,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:35:26,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:35:26,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:35:26,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:35:26,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:35:26,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:35:26,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:35:26,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:35:26,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:35:26,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:35:26,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:35:26,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:35:26,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:35:26,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 12:35:26,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:35:26,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:35:26,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:35:26,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:35:26,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:35:26,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:35:26,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:35:26,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:35:26,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:35:26,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:35:26,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:35:26,442 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 [2020-10-16 12:35:26,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:35:26,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:35:26,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:35:26,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:35:26,488 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:35:26,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:35:26,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:35:26,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:35:26,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:35:26,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:35:26,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:35:26,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:35:26,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:35:26,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:35:26,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:35:26,492 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:35:26,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:35:26,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:35:26,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:35:26,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:35:26,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:35:26,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:35:26,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:35:26,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:35:26,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:35:26,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:35:26,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:35:26,494 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:35:26,494 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:35:26,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:35:26,495 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:35:26,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:35:26,790 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:35:26,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:35:26,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:35:26,795 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:35:26,796 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-10-16 12:35:26,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eeec6d406/fae35e6b8e784912ac554e3470b5fa84/FLAG189359416 [2020-10-16 12:35:27,418 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:35:27,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-10-16 12:35:27,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eeec6d406/fae35e6b8e784912ac554e3470b5fa84/FLAG189359416 [2020-10-16 12:35:27,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eeec6d406/fae35e6b8e784912ac554e3470b5fa84 [2020-10-16 12:35:27,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:35:27,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:35:27,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:35:27,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:35:27,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:35:27,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:35:27" (1/1) ... [2020-10-16 12:35:27,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce1109b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:27, skipping insertion in model container [2020-10-16 12:35:27,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:35:27" (1/1) ... [2020-10-16 12:35:27,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:35:27,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:35:28,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:35:28,239 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:35:28,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:35:28,354 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:35:28,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28 WrapperNode [2020-10-16 12:35:28,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:35:28,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:35:28,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:35:28,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:35:28,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28" (1/1) ... [2020-10-16 12:35:28,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28" (1/1) ... [2020-10-16 12:35:28,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:35:28,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:35:28,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:35:28,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:35:28,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28" (1/1) ... [2020-10-16 12:35:28,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28" (1/1) ... [2020-10-16 12:35:28,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28" (1/1) ... [2020-10-16 12:35:28,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28" (1/1) ... [2020-10-16 12:35:28,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28" (1/1) ... [2020-10-16 12:35:28,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28" (1/1) ... [2020-10-16 12:35:28,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28" (1/1) ... [2020-10-16 12:35:28,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:35:28,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:35:28,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:35:28,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:35:28,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28" (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 [2020-10-16 12:35:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 12:35:28,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 12:35:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:35:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:35:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:35:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:35:28,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:35:28,506 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:35:29,110 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:35:29,110 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-16 12:35:29,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:35:29 BoogieIcfgContainer [2020-10-16 12:35:29,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:35:29,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:35:29,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:35:29,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:35:29,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:35:27" (1/3) ... [2020-10-16 12:35:29,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79aebe0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:35:29, skipping insertion in model container [2020-10-16 12:35:29,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:35:28" (2/3) ... [2020-10-16 12:35:29,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79aebe0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:35:29, skipping insertion in model container [2020-10-16 12:35:29,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:35:29" (3/3) ... [2020-10-16 12:35:29,122 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2020-10-16 12:35:29,133 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:35:29,133 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:35:29,140 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 12:35:29,141 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:35:29,163 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,163 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,163 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,164 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,164 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,165 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,165 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,166 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,166 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,167 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,167 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,171 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,171 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,172 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,172 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,173 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,173 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,174 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:35:29,180 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:35:29,194 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:35:29,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:35:29,217 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:35:29,217 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:35:29,217 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:35:29,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:35:29,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:35:29,218 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:35:29,218 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:35:29,230 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:35:29,231 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 43 transitions, 91 flow [2020-10-16 12:35:29,234 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 43 transitions, 91 flow [2020-10-16 12:35:29,236 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 91 flow [2020-10-16 12:35:29,269 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2020-10-16 12:35:29,270 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:35:29,274 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-10-16 12:35:29,276 INFO L117 LiptonReduction]: Number of co-enabled transitions 378 [2020-10-16 12:35:29,998 INFO L132 LiptonReduction]: Checked pairs total: 840 [2020-10-16 12:35:29,999 INFO L134 LiptonReduction]: Total number of compositions: 28 [2020-10-16 12:35:30,006 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions, 37 flow [2020-10-16 12:35:30,019 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 12:35:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 12:35:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-16 12:35:30,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:30,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 12:35:30,030 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:30,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:30,036 INFO L82 PathProgramCache]: Analyzing trace with hash 313153214, now seen corresponding path program 1 times [2020-10-16 12:35:30,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:30,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345414797] [2020-10-16 12:35:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:35:30,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345414797] [2020-10-16 12:35:30,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:30,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:35:30,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1748218148] [2020-10-16 12:35:30,252 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:30,256 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:30,272 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-16 12:35:30,272 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:30,277 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:30,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:30,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:30,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:30,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:30,298 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-16 12:35:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:30,328 INFO L93 Difference]: Finished difference Result 34 states and 59 transitions. [2020-10-16 12:35:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:30,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-16 12:35:30,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:30,339 INFO L225 Difference]: With dead ends: 34 [2020-10-16 12:35:30,339 INFO L226 Difference]: Without dead ends: 32 [2020-10-16 12:35:30,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-16 12:35:30,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-16 12:35:30,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-16 12:35:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 56 transitions. [2020-10-16 12:35:30,383 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 56 transitions. Word has length 5 [2020-10-16 12:35:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:30,384 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 56 transitions. [2020-10-16 12:35:30,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 56 transitions. [2020-10-16 12:35:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 12:35:30,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:30,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:30,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:35:30,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:30,386 INFO L82 PathProgramCache]: Analyzing trace with hash 297773264, now seen corresponding path program 1 times [2020-10-16 12:35:30,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:30,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445805830] [2020-10-16 12:35:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:35:30,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445805830] [2020-10-16 12:35:30,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:30,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:35:30,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1344431785] [2020-10-16 12:35:30,443 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:30,443 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:30,445 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-16 12:35:30,445 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:30,446 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:30,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:35:30,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:30,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:35:30,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:35:30,449 INFO L87 Difference]: Start difference. First operand 32 states and 56 transitions. Second operand 3 states. [2020-10-16 12:35:30,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:30,458 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2020-10-16 12:35:30,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:35:30,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 12:35:30,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:30,459 INFO L225 Difference]: With dead ends: 27 [2020-10-16 12:35:30,459 INFO L226 Difference]: Without dead ends: 24 [2020-10-16 12:35:30,461 INFO L677 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 [2020-10-16 12:35:30,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-16 12:35:30,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-16 12:35:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-16 12:35:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2020-10-16 12:35:30,466 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 7 [2020-10-16 12:35:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:30,466 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2020-10-16 12:35:30,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:35:30,467 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2020-10-16 12:35:30,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:35:30,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:30,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:30,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:35:30,468 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:30,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:30,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1982953930, now seen corresponding path program 1 times [2020-10-16 12:35:30,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:30,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916935640] [2020-10-16 12:35:30,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:35:30,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916935640] [2020-10-16 12:35:30,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:30,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:35:30,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1292528331] [2020-10-16 12:35:30,573 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:30,574 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:30,592 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-10-16 12:35:30,592 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:30,604 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:30,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:35:30,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:30,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:35:30,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:35:30,606 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 4 states. [2020-10-16 12:35:30,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:30,651 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2020-10-16 12:35:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:35:30,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 12:35:30,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:30,652 INFO L225 Difference]: With dead ends: 18 [2020-10-16 12:35:30,652 INFO L226 Difference]: Without dead ends: 18 [2020-10-16 12:35:30,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:35:30,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-16 12:35:30,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-16 12:35:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-16 12:35:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2020-10-16 12:35:30,656 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 9 [2020-10-16 12:35:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:30,657 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-10-16 12:35:30,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:35:30,657 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2020-10-16 12:35:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:35:30,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:35:30,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:35:30,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:35:30,658 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:35:30,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:35:30,659 INFO L82 PathProgramCache]: Analyzing trace with hash -970597882, now seen corresponding path program 1 times [2020-10-16 12:35:30,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:35:30,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614175531] [2020-10-16 12:35:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:35:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:35:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:35:30,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614175531] [2020-10-16 12:35:30,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:35:30,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:35:30,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1082703171] [2020-10-16 12:35:30,729 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:35:30,729 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:35:30,732 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-10-16 12:35:30,732 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:35:30,749 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:35:30,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:35:30,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:35:30,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:35:30,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:35:30,751 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 4 states. [2020-10-16 12:35:30,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:35:30,757 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2020-10-16 12:35:30,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:35:30,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 12:35:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:35:30,758 INFO L225 Difference]: With dead ends: 17 [2020-10-16 12:35:30,759 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:35:30,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:35:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:35:30,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:35:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:35:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:35:30,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-16 12:35:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:35:30,761 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:35:30,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:35:30,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:35:30,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:35:30,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:35:30,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:35:30 BasicIcfg [2020-10-16 12:35:30,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:35:30,768 INFO L168 Benchmark]: Toolchain (without parser) took 3060.73 ms. Allocated memory was 141.0 MB in the beginning and 245.9 MB in the end (delta: 104.9 MB). Free memory was 103.0 MB in the beginning and 194.8 MB in the end (delta: -91.8 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:30,769 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:35:30,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.44 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 163.4 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:30,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.86 ms. Allocated memory is still 205.0 MB. Free memory was 163.4 MB in the beginning and 161.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:30,772 INFO L168 Benchmark]: Boogie Preprocessor took 28.09 ms. Allocated memory is still 205.0 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:30,773 INFO L168 Benchmark]: RCFGBuilder took 677.81 ms. Allocated memory is still 205.0 MB. Free memory was 159.5 MB in the beginning and 116.0 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-10-16 12:35:30,773 INFO L168 Benchmark]: TraceAbstraction took 1651.45 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 115.3 MB in the beginning and 194.8 MB in the end (delta: -79.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:35:30,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.44 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 163.4 MB in the end (delta: -60.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.86 ms. Allocated memory is still 205.0 MB. Free memory was 163.4 MB in the beginning and 161.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.09 ms. Allocated memory is still 205.0 MB. Free memory was 161.5 MB in the beginning and 159.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 677.81 ms. Allocated memory is still 205.0 MB. Free memory was 159.5 MB in the beginning and 116.0 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1651.45 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 115.3 MB in the beginning and 194.8 MB in the end (delta: -79.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 181 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 29 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 45 PlacesBefore, 18 PlacesAfterwards, 43 TransitionsBefore, 16 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 28 TotalNumberOfCompositions, 840 MoverChecksTotal - PositiveResult [Line: 696]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 710]: 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 2 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 46 SDtfs, 19 SDslu, 29 SDs, 0 SdLazy, 22 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 844 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...