/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 21:38:37,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 21:38:37,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 21:38:37,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 21:38:37,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 21:38:37,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 21:38:37,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 21:38:37,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 21:38:37,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 21:38:37,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 21:38:37,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 21:38:37,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 21:38:37,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 21:38:37,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 21:38:37,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 21:38:37,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 21:38:37,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 21:38:37,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 21:38:37,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 21:38:37,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 21:38:37,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 21:38:37,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 21:38:37,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 21:38:37,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 21:38:37,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 21:38:37,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 21:38:37,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 21:38:37,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 21:38:37,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 21:38:37,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 21:38:37,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 21:38:37,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 21:38:37,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 21:38:37,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 21:38:37,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 21:38:37,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 21:38:37,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 21:38:37,694 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 21:38:37,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 21:38:37,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 21:38:37,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 21:38:37,696 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 21:38:37,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 21:38:37,697 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 21:38:37,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 21:38:37,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 21:38:37,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 21:38:37,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 21:38:37,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 21:38:37,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 21:38:37,698 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 21:38:37,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 21:38:37,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 21:38:37,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 21:38:37,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 21:38:37,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 21:38:37,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 21:38:37,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 21:38:37,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 21:38:37,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 21:38:37,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 21:38:37,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 21:38:37,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 21:38:37,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 21:38:37,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 21:38:37,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 21:38:37,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 21:38:38,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 21:38:38,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 21:38:38,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 21:38:38,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 21:38:38,036 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 21:38:38,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-10-21 21:38:38,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97859e737/bb55e7ef097143bca1838a62c5f836f1/FLAGc2a82ac55 [2020-10-21 21:38:38,628 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 21:38:38,629 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-10-21 21:38:38,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97859e737/bb55e7ef097143bca1838a62c5f836f1/FLAGc2a82ac55 [2020-10-21 21:38:39,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97859e737/bb55e7ef097143bca1838a62c5f836f1 [2020-10-21 21:38:39,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 21:38:39,129 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 21:38:39,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 21:38:39,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 21:38:39,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 21:38:39,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:38:39" (1/1) ... [2020-10-21 21:38:39,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d326e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39, skipping insertion in model container [2020-10-21 21:38:39,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 09:38:39" (1/1) ... [2020-10-21 21:38:39,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 21:38:39,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 21:38:39,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:38:39,698 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 21:38:39,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 21:38:39,859 INFO L208 MainTranslator]: Completed translation [2020-10-21 21:38:39,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39 WrapperNode [2020-10-21 21:38:39,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 21:38:39,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 21:38:39,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 21:38:39,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 21:38:39,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39" (1/1) ... [2020-10-21 21:38:39,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39" (1/1) ... [2020-10-21 21:38:39,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 21:38:39,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 21:38:39,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 21:38:39,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 21:38:39,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39" (1/1) ... [2020-10-21 21:38:39,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39" (1/1) ... [2020-10-21 21:38:39,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39" (1/1) ... [2020-10-21 21:38:39,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39" (1/1) ... [2020-10-21 21:38:39,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39" (1/1) ... [2020-10-21 21:38:39,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39" (1/1) ... [2020-10-21 21:38:39,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39" (1/1) ... [2020-10-21 21:38:39,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 21:38:39,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 21:38:39,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 21:38:39,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 21:38:39,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-21 21:38:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-21 21:38:40,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-21 21:38:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 21:38:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 21:38:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 21:38:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 21:38:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 21:38:40,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 21:38:40,044 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 21:38:40,696 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 21:38:40,697 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-21 21:38:40,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:38:40 BoogieIcfgContainer [2020-10-21 21:38:40,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 21:38:40,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 21:38:40,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 21:38:40,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 21:38:40,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 09:38:39" (1/3) ... [2020-10-21 21:38:40,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566bbbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:38:40, skipping insertion in model container [2020-10-21 21:38:40,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 09:38:39" (2/3) ... [2020-10-21 21:38:40,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566bbbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 09:38:40, skipping insertion in model container [2020-10-21 21:38:40,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 09:38:40" (3/3) ... [2020-10-21 21:38:40,714 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2020-10-21 21:38:40,726 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 21:38:40,727 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 21:38:40,737 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-21 21:38:40,738 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 21:38:40,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,763 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,764 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,766 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,777 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 21:38:40,780 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-21 21:38:40,794 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-21 21:38:40,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 21:38:40,814 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 21:38:40,814 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 21:38:40,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 21:38:40,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 21:38:40,814 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 21:38:40,814 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 21:38:40,815 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 21:38:40,826 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 21:38:40,828 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 47 transitions, 99 flow [2020-10-21 21:38:40,831 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 47 transitions, 99 flow [2020-10-21 21:38:40,833 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2020-10-21 21:38:40,868 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2020-10-21 21:38:40,868 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-21 21:38:40,872 INFO L80 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-10-21 21:38:40,874 INFO L116 LiptonReduction]: Number of co-enabled transitions 378 [2020-10-21 21:38:42,396 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-21 21:38:42,497 INFO L131 LiptonReduction]: Checked pairs total: 879 [2020-10-21 21:38:42,497 INFO L133 LiptonReduction]: Total number of compositions: 36 [2020-10-21 21:38:42,507 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 14 transitions, 33 flow [2020-10-21 21:38:42,518 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 38 states. [2020-10-21 21:38:42,521 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-21 21:38:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-21 21:38:42,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:42,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-21 21:38:42,529 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:42,535 INFO L82 PathProgramCache]: Analyzing trace with hash 11878376, now seen corresponding path program 1 times [2020-10-21 21:38:42,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:42,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670428579] [2020-10-21 21:38:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:38:42,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670428579] [2020-10-21 21:38:42,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:42,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 21:38:42,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552553920] [2020-10-21 21:38:42,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:38:42,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:42,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:38:42,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:38:42,773 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-21 21:38:42,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:42,799 INFO L93 Difference]: Finished difference Result 29 states and 50 transitions. [2020-10-21 21:38:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:38:42,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-21 21:38:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:42,811 INFO L225 Difference]: With dead ends: 29 [2020-10-21 21:38:42,811 INFO L226 Difference]: Without dead ends: 22 [2020-10-21 21:38:42,813 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 [2020-10-21 21:38:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-21 21:38:42,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-21 21:38:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-21 21:38:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 38 transitions. [2020-10-21 21:38:42,851 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 38 transitions. Word has length 4 [2020-10-21 21:38:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:42,852 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 38 transitions. [2020-10-21 21:38:42,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:38:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 38 transitions. [2020-10-21 21:38:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-21 21:38:42,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:42,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-21 21:38:42,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 21:38:42,853 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:42,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:42,854 INFO L82 PathProgramCache]: Analyzing trace with hash 368238171, now seen corresponding path program 1 times [2020-10-21 21:38:42,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:42,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620220520] [2020-10-21 21:38:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:38:42,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620220520] [2020-10-21 21:38:42,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:42,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:38:42,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612163413] [2020-10-21 21:38:42,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 21:38:42,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:42,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 21:38:42,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 21:38:42,948 INFO L87 Difference]: Start difference. First operand 22 states and 38 transitions. Second operand 3 states. [2020-10-21 21:38:42,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:42,955 INFO L93 Difference]: Finished difference Result 21 states and 35 transitions. [2020-10-21 21:38:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 21:38:42,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-21 21:38:42,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:42,957 INFO L225 Difference]: With dead ends: 21 [2020-10-21 21:38:42,957 INFO L226 Difference]: Without dead ends: 18 [2020-10-21 21:38:42,958 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 [2020-10-21 21:38:42,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-21 21:38:42,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-21 21:38:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-21 21:38:42,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2020-10-21 21:38:42,962 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 27 transitions. Word has length 5 [2020-10-21 21:38:42,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:42,962 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 27 transitions. [2020-10-21 21:38:42,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 21:38:42,963 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2020-10-21 21:38:42,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 21:38:42,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:42,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:42,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 21:38:42,964 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1689707517, now seen corresponding path program 1 times [2020-10-21 21:38:42,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:42,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889463314] [2020-10-21 21:38:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:38:43,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889463314] [2020-10-21 21:38:43,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:43,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-21 21:38:43,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220131270] [2020-10-21 21:38:43,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 21:38:43,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:43,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 21:38:43,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 21:38:43,023 INFO L87 Difference]: Start difference. First operand 18 states and 27 transitions. Second operand 4 states. [2020-10-21 21:38:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:43,050 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2020-10-21 21:38:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 21:38:43,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-21 21:38:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:43,052 INFO L225 Difference]: With dead ends: 14 [2020-10-21 21:38:43,052 INFO L226 Difference]: Without dead ends: 14 [2020-10-21 21:38:43,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-21 21:38:43,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-21 21:38:43,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-21 21:38:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-21 21:38:43,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2020-10-21 21:38:43,055 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 7 [2020-10-21 21:38:43,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:43,056 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-10-21 21:38:43,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 21:38:43,056 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2020-10-21 21:38:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 21:38:43,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 21:38:43,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 21:38:43,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 21:38:43,057 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 21:38:43,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 21:38:43,058 INFO L82 PathProgramCache]: Analyzing trace with hash 310628894, now seen corresponding path program 1 times [2020-10-21 21:38:43,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 21:38:43,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235862405] [2020-10-21 21:38:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 21:38:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 21:38:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 21:38:43,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235862405] [2020-10-21 21:38:43,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 21:38:43,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 21:38:43,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111952366] [2020-10-21 21:38:43,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 21:38:43,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 21:38:43,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 21:38:43,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 21:38:43,153 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 4 states. [2020-10-21 21:38:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 21:38:43,160 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2020-10-21 21:38:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 21:38:43,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-21 21:38:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 21:38:43,162 INFO L225 Difference]: With dead ends: 13 [2020-10-21 21:38:43,162 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 21:38:43,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-21 21:38:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 21:38:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 21:38:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 21:38:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 21:38:43,177 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-21 21:38:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 21:38:43,178 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 21:38:43,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 21:38:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 21:38:43,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 21:38:43,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 21:38:43,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 09:38:43 BasicIcfg [2020-10-21 21:38:43,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 21:38:43,184 INFO L168 Benchmark]: Toolchain (without parser) took 4061.48 ms. Allocated memory was 146.8 MB in the beginning and 248.0 MB in the end (delta: 101.2 MB). Free memory was 101.3 MB in the beginning and 214.1 MB in the end (delta: -112.8 MB). Peak memory consumption was 112.2 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:43,185 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-21 21:38:43,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.70 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 100.2 MB in the beginning and 158.5 MB in the end (delta: -58.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:43,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.36 ms. Allocated memory is still 203.4 MB. Free memory was 158.5 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:43,188 INFO L168 Benchmark]: Boogie Preprocessor took 31.57 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 155.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:43,189 INFO L168 Benchmark]: RCFGBuilder took 753.86 ms. Allocated memory is still 203.4 MB. Free memory was 154.5 MB in the beginning and 105.1 MB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:43,189 INFO L168 Benchmark]: TraceAbstraction took 2479.18 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 104.4 MB in the beginning and 214.1 MB in the end (delta: -109.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-10-21 21:38:43,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 728.70 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 100.2 MB in the beginning and 158.5 MB in the end (delta: -58.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.36 ms. Allocated memory is still 203.4 MB. Free memory was 158.5 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.57 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 155.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 753.86 ms. Allocated memory is still 203.4 MB. Free memory was 154.5 MB in the beginning and 105.1 MB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2479.18 ms. Allocated memory was 203.4 MB in the beginning and 248.0 MB in the end (delta: 44.6 MB). Free memory was 104.4 MB in the beginning and 214.1 MB in the end (delta: -109.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 254 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 20 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 41 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 49 PlacesBefore, 17 PlacesAfterwards, 47 TransitionsBefore, 14 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 36 TotalNumberOfCompositions, 879 MoverChecksTotal - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 16]: 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, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 39 SDtfs, 20 SDslu, 20 SDs, 0 SdLazy, 24 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 415 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...