/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 19:04:07,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 19:04:07,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 19:04:07,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 19:04:07,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 19:04:07,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 19:04:07,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 19:04:07,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 19:04:07,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 19:04:07,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 19:04:07,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 19:04:07,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 19:04:07,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 19:04:07,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 19:04:07,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 19:04:07,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 19:04:07,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 19:04:07,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 19:04:07,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 19:04:07,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 19:04:07,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 19:04:07,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 19:04:07,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 19:04:07,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 19:04:07,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 19:04:07,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 19:04:07,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 19:04:07,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 19:04:07,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 19:04:07,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 19:04:07,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 19:04:07,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 19:04:07,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 19:04:07,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 19:04:07,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 19:04:07,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 19:04:07,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 19:04:07,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 19:04:07,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 19:04:07,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 19:04:07,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 19:04:07,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf [2019-12-27 19:04:07,845 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 19:04:07,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 19:04:07,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 19:04:07,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 19:04:07,848 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 19:04:07,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 19:04:07,848 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 19:04:07,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 19:04:07,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 19:04:07,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 19:04:07,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 19:04:07,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 19:04:07,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 19:04:07,850 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 19:04:07,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 19:04:07,851 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 19:04:07,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 19:04:07,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 19:04:07,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 19:04:07,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 19:04:07,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 19:04:07,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 19:04:07,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 19:04:07,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 19:04:07,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 19:04:07,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 19:04:07,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 19:04:07,853 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 19:04:07,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 19:04:07,854 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 19:04:07,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 19:04:08,134 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 19:04:08,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 19:04:08,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 19:04:08,159 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 19:04:08,160 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 19:04:08,161 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2019-12-27 19:04:08,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f8c1cc26/1a1f569e235d4307920a50652da017d6/FLAG9385970b7 [2019-12-27 19:04:08,832 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 19:04:08,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2019-12-27 19:04:08,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f8c1cc26/1a1f569e235d4307920a50652da017d6/FLAG9385970b7 [2019-12-27 19:04:09,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f8c1cc26/1a1f569e235d4307920a50652da017d6 [2019-12-27 19:04:09,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 19:04:09,147 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 19:04:09,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 19:04:09,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 19:04:09,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 19:04:09,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 07:04:09" (1/1) ... [2019-12-27 19:04:09,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@745088c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09, skipping insertion in model container [2019-12-27 19:04:09,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 07:04:09" (1/1) ... [2019-12-27 19:04:09,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 19:04:09,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 19:04:09,370 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2019-12-27 19:04:09,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 19:04:09,653 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 19:04:09,668 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2019-12-27 19:04:09,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 19:04:09,776 INFO L208 MainTranslator]: Completed translation [2019-12-27 19:04:09,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09 WrapperNode [2019-12-27 19:04:09,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 19:04:09,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 19:04:09,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 19:04:09,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 19:04:09,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09" (1/1) ... [2019-12-27 19:04:09,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09" (1/1) ... [2019-12-27 19:04:09,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 19:04:09,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 19:04:09,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 19:04:09,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 19:04:09,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09" (1/1) ... [2019-12-27 19:04:09,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09" (1/1) ... [2019-12-27 19:04:09,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09" (1/1) ... [2019-12-27 19:04:09,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09" (1/1) ... [2019-12-27 19:04:09,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09" (1/1) ... [2019-12-27 19:04:09,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09" (1/1) ... [2019-12-27 19:04:09,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09" (1/1) ... [2019-12-27 19:04:09,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 19:04:09,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 19:04:09,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 19:04:09,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 19:04:09,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09" (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 [2019-12-27 19:04:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 19:04:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 19:04:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-12-27 19:04:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 19:04:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 19:04:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-27 19:04:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-12-27 19:04:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-12-27 19:04:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 19:04:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 19:04:09,931 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 19:04:10,311 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 19:04:10,311 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 19:04:10,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 07:04:10 BoogieIcfgContainer [2019-12-27 19:04:10,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 19:04:10,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 19:04:10,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 19:04:10,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 19:04:10,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 07:04:09" (1/3) ... [2019-12-27 19:04:10,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c83bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 07:04:10, skipping insertion in model container [2019-12-27 19:04:10,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:04:09" (2/3) ... [2019-12-27 19:04:10,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c83bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 07:04:10, skipping insertion in model container [2019-12-27 19:04:10,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 07:04:10" (3/3) ... [2019-12-27 19:04:10,322 INFO L109 eAbstractionObserver]: Analyzing ICFG condvar.i [2019-12-27 19:04:10,332 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 19:04:10,333 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 19:04:10,340 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 19:04:10,341 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 19:04:10,365 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,365 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,366 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,366 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,367 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,367 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,367 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,368 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,368 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,368 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,372 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,372 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,373 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,373 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,373 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,374 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:04:10,390 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-27 19:04:10,409 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 19:04:10,410 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 19:04:10,410 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 19:04:10,410 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 19:04:10,410 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 19:04:10,410 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 19:04:10,411 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 19:04:10,411 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 19:04:10,425 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 59 transitions [2019-12-27 19:04:10,426 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions [2019-12-27 19:04:10,467 INFO L132 PetriNetUnfolder]: 5/58 cut-off events. [2019-12-27 19:04:10,467 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 19:04:10,473 INFO L76 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 5/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs. 0/52 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2019-12-27 19:04:10,477 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions [2019-12-27 19:04:10,498 INFO L132 PetriNetUnfolder]: 5/58 cut-off events. [2019-12-27 19:04:10,498 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 19:04:10,499 INFO L76 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 5/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs. 0/52 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2019-12-27 19:04:10,501 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 352 [2019-12-27 19:04:10,502 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 19:04:11,841 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2019-12-27 19:04:12,363 WARN L192 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2019-12-27 19:04:12,516 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-12-27 19:04:12,519 INFO L206 etLargeBlockEncoding]: Checked pairs total: 294 [2019-12-27 19:04:12,520 INFO L214 etLargeBlockEncoding]: Total number of compositions: 50 [2019-12-27 19:04:12,523 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 12 transitions [2019-12-27 19:04:12,532 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 16 states. [2019-12-27 19:04:12,534 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-12-27 19:04:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-27 19:04:12,540 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:04:12,541 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-27 19:04:12,542 INFO L410 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:04:12,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:04:12,548 INFO L82 PathProgramCache]: Analyzing trace with hash 7366572, now seen corresponding path program 1 times [2019-12-27 19:04:12,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:04:12,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178965874] [2019-12-27 19:04:12,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:04:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:04:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:04:12,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178965874] [2019-12-27 19:04:12,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:04:12,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 19:04:12,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1509283438] [2019-12-27 19:04:12,815 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:04:12,821 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:04:12,836 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 5 states and 4 transitions. [2019-12-27 19:04:12,838 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:04:12,850 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:04:12,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:04:12,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:04:12,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:04:12,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:04:12,868 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2019-12-27 19:04:12,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:04:12,911 INFO L93 Difference]: Finished difference Result 12 states and 18 transitions. [2019-12-27 19:04:12,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:04:12,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-27 19:04:12,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:04:12,922 INFO L225 Difference]: With dead ends: 12 [2019-12-27 19:04:12,922 INFO L226 Difference]: Without dead ends: 9 [2019-12-27 19:04:12,923 INFO L631 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 [2019-12-27 19:04:12,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-27 19:04:12,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-27 19:04:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-27 19:04:12,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2019-12-27 19:04:12,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 15 transitions. Word has length 4 [2019-12-27 19:04:12,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:04:12,957 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 15 transitions. [2019-12-27 19:04:12,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:04:12,957 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 15 transitions. [2019-12-27 19:04:12,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 19:04:12,958 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:04:12,958 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-27 19:04:12,959 INFO L410 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:04:12,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:04:12,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1511130461, now seen corresponding path program 1 times [2019-12-27 19:04:12,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:04:12,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778121210] [2019-12-27 19:04:12,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:04:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:04:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:04:13,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778121210] [2019-12-27 19:04:13,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:04:13,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:04:13,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1462091350] [2019-12-27 19:04:13,052 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:04:13,054 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:04:13,059 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 10 transitions. [2019-12-27 19:04:13,060 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:04:13,073 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1 times. [2019-12-27 19:04:13,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 19:04:13,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:04:13,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 19:04:13,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 19:04:13,079 INFO L87 Difference]: Start difference. First operand 9 states and 15 transitions. Second operand 4 states. [2019-12-27 19:04:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:04:13,117 INFO L93 Difference]: Finished difference Result 11 states and 19 transitions. [2019-12-27 19:04:13,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 19:04:13,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-12-27 19:04:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:04:13,118 INFO L225 Difference]: With dead ends: 11 [2019-12-27 19:04:13,119 INFO L226 Difference]: Without dead ends: 11 [2019-12-27 19:04:13,120 INFO L631 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 [2019-12-27 19:04:13,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-27 19:04:13,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-27 19:04:13,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-27 19:04:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 19 transitions. [2019-12-27 19:04:13,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 19 transitions. Word has length 6 [2019-12-27 19:04:13,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:04:13,123 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 19 transitions. [2019-12-27 19:04:13,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 19:04:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 19 transitions. [2019-12-27 19:04:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-27 19:04:13,124 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:04:13,124 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:04:13,125 INFO L410 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:04:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:04:13,125 INFO L82 PathProgramCache]: Analyzing trace with hash 399613212, now seen corresponding path program 1 times [2019-12-27 19:04:13,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:04:13,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752403738] [2019-12-27 19:04:13,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:04:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:04:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:04:13,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752403738] [2019-12-27 19:04:13,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105503358] [2019-12-27 19:04:13,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:04:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:04:13,245 INFO L264 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-27 19:04:13,250 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 19:04:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:04:13,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 19:04:13,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-12-27 19:04:13,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1855611151] [2019-12-27 19:04:13,267 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:04:13,267 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:04:13,270 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 11 states and 13 transitions. [2019-12-27 19:04:13,271 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:04:13,293 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2019-12-27 19:04:13,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 19:04:13,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:04:13,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 19:04:13,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-27 19:04:13,295 INFO L87 Difference]: Start difference. First operand 11 states and 19 transitions. Second operand 6 states. [2019-12-27 19:04:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:04:13,357 INFO L93 Difference]: Finished difference Result 13 states and 23 transitions. [2019-12-27 19:04:13,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 19:04:13,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-12-27 19:04:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:04:13,359 INFO L225 Difference]: With dead ends: 13 [2019-12-27 19:04:13,359 INFO L226 Difference]: Without dead ends: 13 [2019-12-27 19:04:13,360 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-12-27 19:04:13,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-27 19:04:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-27 19:04:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-27 19:04:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 23 transitions. [2019-12-27 19:04:13,363 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 23 transitions. Word has length 7 [2019-12-27 19:04:13,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:04:13,363 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 23 transitions. [2019-12-27 19:04:13,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 19:04:13,364 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 23 transitions. [2019-12-27 19:04:13,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 19:04:13,364 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:04:13,364 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-27 19:04:13,572 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 19:04:13,572 INFO L410 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:04:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:04:13,573 INFO L82 PathProgramCache]: Analyzing trace with hash -496875069, now seen corresponding path program 2 times [2019-12-27 19:04:13,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:04:13,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013520232] [2019-12-27 19:04:13,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:04:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:04:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 19:04:13,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013520232] [2019-12-27 19:04:13,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:04:13,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:04:13,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1882974878] [2019-12-27 19:04:13,683 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:04:13,684 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:04:13,687 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 16 transitions. [2019-12-27 19:04:13,687 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:04:13,716 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2019-12-27 19:04:13,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 19:04:13,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:04:13,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 19:04:13,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 19:04:13,717 INFO L87 Difference]: Start difference. First operand 13 states and 23 transitions. Second operand 6 states. [2019-12-27 19:04:13,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:04:13,784 INFO L93 Difference]: Finished difference Result 14 states and 27 transitions. [2019-12-27 19:04:13,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 19:04:13,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-12-27 19:04:13,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:04:13,785 INFO L225 Difference]: With dead ends: 14 [2019-12-27 19:04:13,786 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 19:04:13,786 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-12-27 19:04:13,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 19:04:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 19:04:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 19:04:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 19:04:13,787 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-12-27 19:04:13,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:04:13,787 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 19:04:13,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 19:04:13,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 19:04:13,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 19:04:13,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 07:04:13 BasicIcfg [2019-12-27 19:04:13,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 19:04:13,794 INFO L168 Benchmark]: Toolchain (without parser) took 4647.46 ms. Allocated memory was 138.9 MB in the beginning and 246.4 MB in the end (delta: 107.5 MB). Free memory was 102.0 MB in the beginning and 195.4 MB in the end (delta: -93.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-12-27 19:04:13,795 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-12-27 19:04:13,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.46 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 161.4 MB in the end (delta: -59.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2019-12-27 19:04:13,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 202.9 MB. Free memory was 161.4 MB in the beginning and 159.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 19:04:13,797 INFO L168 Benchmark]: Boogie Preprocessor took 29.19 ms. Allocated memory is still 202.9 MB. Free memory was 159.4 MB in the beginning and 158.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 19:04:13,798 INFO L168 Benchmark]: RCFGBuilder took 455.66 ms. Allocated memory is still 202.9 MB. Free memory was 158.1 MB in the beginning and 137.2 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2019-12-27 19:04:13,799 INFO L168 Benchmark]: TraceAbstraction took 3477.82 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 136.5 MB in the beginning and 195.4 MB in the end (delta: -58.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-12-27 19:04:13,803 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 625.46 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 161.4 MB in the end (delta: -59.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.07 ms. Allocated memory is still 202.9 MB. Free memory was 161.4 MB in the beginning and 159.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.19 ms. Allocated memory is still 202.9 MB. Free memory was 159.4 MB in the beginning and 158.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.66 ms. Allocated memory is still 202.9 MB. Free memory was 158.1 MB in the beginning and 137.2 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3477.82 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 136.5 MB in the beginning and 195.4 MB in the end (delta: -58.9 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 LbeTime: 2.0s, 58 ProgramPointsBefore, 13 ProgramPointsAfterwards, 59 TransitionsBefore, 12 TransitionsAfterwards, 352 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 190 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 8 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 294 CheckedPairsTotal, 50 TotalNumberOfCompositions - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 1 error locations. Result: SAFE, OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 20 SDslu, 22 SDs, 0 SdLazy, 53 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 463 SizeOfPredicates, 1 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 3/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...