/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 01:18:53,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 01:18:53,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 01:18:53,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 01:18:53,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 01:18:53,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 01:18:53,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 01:18:53,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 01:18:53,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 01:18:53,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 01:18:53,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 01:18:53,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 01:18:53,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 01:18:53,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 01:18:53,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 01:18:53,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 01:18:53,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 01:18:53,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 01:18:53,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 01:18:53,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 01:18:53,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 01:18:53,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 01:18:53,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 01:18:53,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 01:18:53,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 01:18:53,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 01:18:53,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 01:18:53,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 01:18:53,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 01:18:53,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 01:18:53,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 01:18:53,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 01:18:53,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 01:18:53,831 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 01:18:53,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 01:18:53,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 01:18:53,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 01:18:53,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 01:18:53,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 01:18:53,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 01:18:53,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 01:18:53,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 01:18:53,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 01:18:53,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 01:18:53,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 01:18:53,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 01:18:53,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 01:18:53,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 01:18:53,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 01:18:53,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 01:18:53,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:18:53,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 01:18:53,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 01:18:53,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 01:18:53,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 01:18:53,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 01:18:53,837 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 01:18:53,837 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 01:18:53,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 01:18:53,837 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 01:18:54,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 01:18:54,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 01:18:54,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 01:18:54,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 01:18:54,140 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 01:18:54,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-22 01:18:54,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b0cdc868/970cb6c58e2a4da99d535e255728204f/FLAG3a31fa2b8 [2020-10-22 01:18:54,733 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 01:18:54,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2020-10-22 01:18:54,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b0cdc868/970cb6c58e2a4da99d535e255728204f/FLAG3a31fa2b8 [2020-10-22 01:18:54,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b0cdc868/970cb6c58e2a4da99d535e255728204f [2020-10-22 01:18:54,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 01:18:54,986 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 01:18:54,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 01:18:54,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 01:18:54,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 01:18:54,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:18:54" (1/1) ... [2020-10-22 01:18:54,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5491dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:54, skipping insertion in model container [2020-10-22 01:18:54,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:18:54" (1/1) ... [2020-10-22 01:18:55,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 01:18:55,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 01:18:55,447 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-22 01:18:55,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:18:55,615 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 01:18:55,631 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-22 01:18:55,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:18:55,733 INFO L208 MainTranslator]: Completed translation [2020-10-22 01:18:55,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55 WrapperNode [2020-10-22 01:18:55,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 01:18:55,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 01:18:55,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 01:18:55,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 01:18:55,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 01:18:55,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 01:18:55,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 01:18:55,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 01:18:55,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (1/1) ... [2020-10-22 01:18:55,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 01:18:55,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 01:18:55,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 01:18:55,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 01:18:55,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (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 [2020-10-22 01:18:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-22 01:18:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-22 01:18:55,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-22 01:18:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-22 01:18:55,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-22 01:18:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 01:18:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 01:18:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 01:18:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 01:18:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 01:18:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 01:18:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 01:18:55,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 01:18:55,894 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 01:18:56,269 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 01:18:56,270 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 01:18:56,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:18:56 BoogieIcfgContainer [2020-10-22 01:18:56,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 01:18:56,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 01:18:56,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 01:18:56,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 01:18:56,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 01:18:54" (1/3) ... [2020-10-22 01:18:56,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dfe5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:18:56, skipping insertion in model container [2020-10-22 01:18:56,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:55" (2/3) ... [2020-10-22 01:18:56,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dfe5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:18:56, skipping insertion in model container [2020-10-22 01:18:56,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:18:56" (3/3) ... [2020-10-22 01:18:56,281 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-10-22 01:18:56,292 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 01:18:56,293 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 01:18:56,300 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-22 01:18:56,301 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 01:18:56,330 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,331 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,331 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,332 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,332 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,332 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,333 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,333 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,333 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,334 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,334 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,334 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,335 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,335 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,335 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,336 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,336 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,338 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,339 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,341 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,345 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,345 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,346 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,346 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,346 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,346 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,347 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,347 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,363 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,363 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,364 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,364 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,364 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,364 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,365 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,365 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:56,375 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-22 01:18:56,390 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-22 01:18:56,408 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:18:56,408 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:18:56,409 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:18:56,409 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:18:56,409 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:18:56,409 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:18:56,409 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:18:56,409 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:18:56,423 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:18:56,423 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 78 transitions, 178 flow [2020-10-22 01:18:56,426 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 78 transitions, 178 flow [2020-10-22 01:18:56,429 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 78 transitions, 178 flow [2020-10-22 01:18:56,478 INFO L129 PetriNetUnfolder]: 9/78 cut-off events. [2020-10-22 01:18:56,479 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-22 01:18:56,485 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 9/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 3 conditions per place. [2020-10-22 01:18:56,488 INFO L116 LiptonReduction]: Number of co-enabled transitions 1320 [2020-10-22 01:18:57,813 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-22 01:18:57,933 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-22 01:18:57,947 INFO L131 LiptonReduction]: Checked pairs total: 4998 [2020-10-22 01:18:57,947 INFO L133 LiptonReduction]: Total number of compositions: 56 [2020-10-22 01:18:57,954 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 38 transitions, 98 flow [2020-10-22 01:18:58,001 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 285 states. [2020-10-22 01:18:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2020-10-22 01:18:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 01:18:58,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:58,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:58,034 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:58,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:58,046 INFO L82 PathProgramCache]: Analyzing trace with hash -248016852, now seen corresponding path program 1 times [2020-10-22 01:18:58,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:58,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818348236] [2020-10-22 01:18:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:58,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818348236] [2020-10-22 01:18:58,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:58,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:18:58,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2094589851] [2020-10-22 01:18:58,290 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:58,293 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:58,307 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 01:18:58,308 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:58,313 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:58,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:18:58,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:58,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:18:58,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:18:58,332 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2020-10-22 01:18:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:58,392 INFO L93 Difference]: Finished difference Result 318 states and 700 transitions. [2020-10-22 01:18:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:18:58,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-22 01:18:58,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:58,409 INFO L225 Difference]: With dead ends: 318 [2020-10-22 01:18:58,409 INFO L226 Difference]: Without dead ends: 195 [2020-10-22 01:18:58,411 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 [2020-10-22 01:18:58,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-22 01:18:58,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 181. [2020-10-22 01:18:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-22 01:18:58,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 413 transitions. [2020-10-22 01:18:58,479 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 413 transitions. Word has length 8 [2020-10-22 01:18:58,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:58,480 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 413 transitions. [2020-10-22 01:18:58,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:18:58,480 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 413 transitions. [2020-10-22 01:18:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 01:18:58,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:58,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:58,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 01:18:58,482 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:58,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:58,483 INFO L82 PathProgramCache]: Analyzing trace with hash 312448463, now seen corresponding path program 1 times [2020-10-22 01:18:58,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:58,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079053635] [2020-10-22 01:18:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:58,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079053635] [2020-10-22 01:18:58,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:58,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:18:58,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [562749876] [2020-10-22 01:18:58,551 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:58,551 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:58,558 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-22 01:18:58,558 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:58,559 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:58,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:18:58,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:58,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:18:58,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:18:58,562 INFO L87 Difference]: Start difference. First operand 181 states and 413 transitions. Second operand 3 states. [2020-10-22 01:18:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:58,591 INFO L93 Difference]: Finished difference Result 168 states and 368 transitions. [2020-10-22 01:18:58,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:18:58,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-22 01:18:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:58,593 INFO L225 Difference]: With dead ends: 168 [2020-10-22 01:18:58,593 INFO L226 Difference]: Without dead ends: 120 [2020-10-22 01:18:58,594 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 [2020-10-22 01:18:58,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-22 01:18:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-10-22 01:18:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-22 01:18:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 263 transitions. [2020-10-22 01:18:58,616 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 263 transitions. Word has length 10 [2020-10-22 01:18:58,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:58,619 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 263 transitions. [2020-10-22 01:18:58,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:18:58,619 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 263 transitions. [2020-10-22 01:18:58,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 01:18:58,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:58,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:58,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 01:18:58,622 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:58,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:58,623 INFO L82 PathProgramCache]: Analyzing trace with hash -104298639, now seen corresponding path program 1 times [2020-10-22 01:18:58,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:58,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669319632] [2020-10-22 01:18:58,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:58,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669319632] [2020-10-22 01:18:58,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:58,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-22 01:18:58,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [215706488] [2020-10-22 01:18:58,786 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:58,788 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:58,791 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 46 transitions. [2020-10-22 01:18:58,791 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:58,924 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:58,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:18:58,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:58,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:18:58,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:18:58,926 INFO L87 Difference]: Start difference. First operand 120 states and 263 transitions. Second operand 6 states. [2020-10-22 01:18:59,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:59,023 INFO L93 Difference]: Finished difference Result 162 states and 368 transitions. [2020-10-22 01:18:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-22 01:18:59,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-22 01:18:59,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:59,025 INFO L225 Difference]: With dead ends: 162 [2020-10-22 01:18:59,025 INFO L226 Difference]: Without dead ends: 100 [2020-10-22 01:18:59,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-22 01:18:59,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-22 01:18:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-22 01:18:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-22 01:18:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 197 transitions. [2020-10-22 01:18:59,034 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 197 transitions. Word has length 15 [2020-10-22 01:18:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:59,035 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 197 transitions. [2020-10-22 01:18:59,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:18:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 197 transitions. [2020-10-22 01:18:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 01:18:59,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:59,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:59,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 01:18:59,037 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:59,037 INFO L82 PathProgramCache]: Analyzing trace with hash 810049139, now seen corresponding path program 2 times [2020-10-22 01:18:59,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:59,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301425546] [2020-10-22 01:18:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:59,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301425546] [2020-10-22 01:18:59,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:59,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-22 01:18:59,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [88426495] [2020-10-22 01:18:59,166 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:59,167 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:59,170 INFO L252 McrAutomatonBuilder]: Finished intersection with 37 states and 52 transitions. [2020-10-22 01:18:59,170 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:59,223 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:59,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:18:59,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:59,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:18:59,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:18:59,224 INFO L87 Difference]: Start difference. First operand 100 states and 197 transitions. Second operand 6 states. [2020-10-22 01:18:59,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:59,266 INFO L93 Difference]: Finished difference Result 58 states and 122 transitions. [2020-10-22 01:18:59,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 01:18:59,266 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-22 01:18:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:59,267 INFO L225 Difference]: With dead ends: 58 [2020-10-22 01:18:59,267 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 01:18:59,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-22 01:18:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 01:18:59,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 01:18:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 01:18:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 01:18:59,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-22 01:18:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:59,269 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 01:18:59,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:18:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 01:18:59,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 01:18:59,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 01:18:59,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 01:18:59 BasicIcfg [2020-10-22 01:18:59,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 01:18:59,274 INFO L168 Benchmark]: Toolchain (without parser) took 4293.20 ms. Allocated memory was 139.5 MB in the beginning and 245.4 MB in the end (delta: 105.9 MB). Free memory was 101.1 MB in the beginning and 95.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 111.5 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:59,275 INFO L168 Benchmark]: CDTParser took 3.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-22 01:18:59,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.24 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 100.3 MB in the beginning and 160.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:59,277 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.80 ms. Allocated memory is still 205.0 MB. Free memory was 160.0 MB in the beginning and 157.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:59,278 INFO L168 Benchmark]: Boogie Preprocessor took 28.69 ms. Allocated memory is still 205.0 MB. Free memory was 157.8 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:59,279 INFO L168 Benchmark]: RCFGBuilder took 457.41 ms. Allocated memory is still 205.0 MB. Free memory was 155.7 MB in the beginning and 132.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:59,279 INFO L168 Benchmark]: TraceAbstraction took 2999.07 ms. Allocated memory was 205.0 MB in the beginning and 245.4 MB in the end (delta: 40.4 MB). Free memory was 132.0 MB in the beginning and 95.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:59,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 747.24 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 100.3 MB in the beginning and 160.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.80 ms. Allocated memory is still 205.0 MB. Free memory was 160.0 MB in the beginning and 157.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.69 ms. Allocated memory is still 205.0 MB. Free memory was 157.8 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.41 ms. Allocated memory is still 205.0 MB. Free memory was 155.7 MB in the beginning and 132.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2999.07 ms. Allocated memory was 205.0 MB in the beginning and 245.4 MB in the end (delta: 40.4 MB). Free memory was 132.0 MB in the beginning and 95.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 712 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 178 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 75 PlacesBefore, 38 PlacesAfterwards, 78 TransitionsBefore, 38 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 56 TotalNumberOfCompositions, 4998 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 146 SDtfs, 103 SDslu, 176 SDs, 0 SdLazy, 91 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=285occurred 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, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1338 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...