/usr/bin/java -Xmx16000000000 -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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:33:53,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:33:53,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:33:53,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:33:53,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:33:53,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:33:53,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:33:53,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:33:53,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:33:53,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:33:53,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:33:53,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:33:53,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:33:53,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:33:53,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:33:53,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:33:53,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:33:53,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:33:53,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:33:53,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:33:53,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:33:53,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:33:53,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:33:53,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:33:53,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 18:33:53,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:33:53,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:33:53,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:33:53,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:33:53,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:33:53,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:33:53,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:33:53,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:33:53,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:33:53,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:33:53,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:33:53,819 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:33:53,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:33:53,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:33:53,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:33:53,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:33:53,842 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:33:53,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:33:53,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:33:53,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:33:53,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:33:53,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:33:53,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:33:53,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:33:53,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:33:53,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:33:53,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:33:53,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:33:53,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:33:53,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:33:53,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:33:53,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:33:53,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:33:53,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:33:53,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:33:53,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:33:53,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:33:53,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:33:53,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:33:53,847 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:33:53,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:33:53,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:33:54,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:33:54,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:33:54,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:33:54,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:33:54,189 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:33:54,190 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_tso.opt.i [2020-10-11 18:33:54,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c7b4aa3/0841a44697f14f069c82011e249a63ed/FLAGc02d6a322 [2020-10-11 18:33:54,797 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:33:54,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_tso.opt.i [2020-10-11 18:33:54,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c7b4aa3/0841a44697f14f069c82011e249a63ed/FLAGc02d6a322 [2020-10-11 18:33:55,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06c7b4aa3/0841a44697f14f069c82011e249a63ed [2020-10-11 18:33:55,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:33:55,087 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:33:55,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:33:55,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:33:55,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:33:55,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:33:55" (1/1) ... [2020-10-11 18:33:55,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243e0147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55, skipping insertion in model container [2020-10-11 18:33:55,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:33:55" (1/1) ... [2020-10-11 18:33:55,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:33:55,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:33:55,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:33:55,733 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:33:55,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:33:55,886 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:33:55,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55 WrapperNode [2020-10-11 18:33:55,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:33:55,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:33:55,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:33:55,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:33:55,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55" (1/1) ... [2020-10-11 18:33:55,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55" (1/1) ... [2020-10-11 18:33:55,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:33:55,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:33:55,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:33:55,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:33:55,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55" (1/1) ... [2020-10-11 18:33:55,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55" (1/1) ... [2020-10-11 18:33:55,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55" (1/1) ... [2020-10-11 18:33:55,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55" (1/1) ... [2020-10-11 18:33:55,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55" (1/1) ... [2020-10-11 18:33:55,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55" (1/1) ... [2020-10-11 18:33:55,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55" (1/1) ... [2020-10-11 18:33:55,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:33:55,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:33:55,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:33:55,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:33:55,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55" (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 [2020-10-11 18:33:56,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:33:56,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:33:56,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:33:56,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:33:56,080 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:33:56,080 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:33:56,080 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:33:56,081 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:33:56,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:33:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:33:56,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:33:56,084 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:33:56,384 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:33:56,385 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:33:56,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:33:56 BoogieIcfgContainer [2020-10-11 18:33:56,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:33:56,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:33:56,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:33:56,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:33:56,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:33:55" (1/3) ... [2020-10-11 18:33:56,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc874b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:33:56, skipping insertion in model container [2020-10-11 18:33:56,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:33:55" (2/3) ... [2020-10-11 18:33:56,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc874b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:33:56, skipping insertion in model container [2020-10-11 18:33:56,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:33:56" (3/3) ... [2020-10-11 18:33:56,398 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_tso.opt.i [2020-10-11 18:33:56,410 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:33:56,419 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:33:56,420 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:33:56,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,448 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,448 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,448 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,450 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,450 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,462 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,463 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,463 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,472 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,473 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,473 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,473 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:33:56,498 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-11 18:33:56,516 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:33:56,516 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:33:56,516 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:33:56,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:33:56,517 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:33:56,517 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:33:56,517 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:33:56,517 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:33:56,530 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-11 18:33:56,573 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-11 18:33:56,573 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:33:56,578 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-11 18:33:56,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 56 transitions, 122 flow [2020-10-11 18:33:56,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 96 flow [2020-10-11 18:33:56,599 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2020-10-11 18:33:56,600 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:33:56,600 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:56,601 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:56,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:56,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:56,607 INFO L82 PathProgramCache]: Analyzing trace with hash 441942769, now seen corresponding path program 1 times [2020-10-11 18:33:56,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:56,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922574448] [2020-10-11 18:33:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:57,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922574448] [2020-10-11 18:33:57,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:57,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:33:57,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749529824] [2020-10-11 18:33:57,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:33:57,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:57,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:33:57,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:33:57,244 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 56 [2020-10-11 18:33:57,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 96 flow. Second operand 6 states. [2020-10-11 18:33:57,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:57,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 56 [2020-10-11 18:33:57,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:57,432 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2020-10-11 18:33:57,432 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:33:57,433 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 59 events. 3/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 4/62 useless extension candidates. Maximal degree in co-relation 63. Up to 7 conditions per place. [2020-10-11 18:33:57,434 INFO L132 encePairwiseOnDemand]: 49/56 looper letters, 6 selfloop transitions, 2 changer transitions 11/54 dead transitions. [2020-10-11 18:33:57,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 150 flow [2020-10-11 18:33:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:33:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:33:57,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 436 transitions. [2020-10-11 18:33:57,463 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8650793650793651 [2020-10-11 18:33:57,464 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 436 transitions. [2020-10-11 18:33:57,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 436 transitions. [2020-10-11 18:33:57,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:57,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 436 transitions. [2020-10-11 18:33:57,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:33:57,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:33:57,511 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:33:57,517 INFO L185 Difference]: Start difference. First operand has 51 places, 45 transitions, 96 flow. Second operand 9 states and 436 transitions. [2020-10-11 18:33:57,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 150 flow [2020-10-11 18:33:57,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 18:33:57,533 INFO L241 Difference]: Finished difference. Result has 64 places, 43 transitions, 110 flow [2020-10-11 18:33:57,536 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=110, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2020-10-11 18:33:57,537 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2020-10-11 18:33:57,537 INFO L481 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 110 flow [2020-10-11 18:33:57,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:33:57,537 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:57,537 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:57,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:33:57,538 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:57,539 INFO L82 PathProgramCache]: Analyzing trace with hash -954630478, now seen corresponding path program 1 times [2020-10-11 18:33:57,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:57,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829680866] [2020-10-11 18:33:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:57,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829680866] [2020-10-11 18:33:57,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:57,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:33:57,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286064891] [2020-10-11 18:33:57,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:33:57,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:57,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:33:57,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:33:57,893 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 56 [2020-10-11 18:33:57,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 110 flow. Second operand 6 states. [2020-10-11 18:33:57,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:57,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 56 [2020-10-11 18:33:57,894 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:58,014 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2020-10-11 18:33:58,014 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-11 18:33:58,015 INFO L80 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 58 events. 3/58 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 2/60 useless extension candidates. Maximal degree in co-relation 95. Up to 7 conditions per place. [2020-10-11 18:33:58,015 INFO L132 encePairwiseOnDemand]: 50/56 looper letters, 6 selfloop transitions, 2 changer transitions 10/53 dead transitions. [2020-10-11 18:33:58,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 184 flow [2020-10-11 18:33:58,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:33:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:33:58,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 434 transitions. [2020-10-11 18:33:58,018 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2020-10-11 18:33:58,018 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 434 transitions. [2020-10-11 18:33:58,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 434 transitions. [2020-10-11 18:33:58,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:58,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 434 transitions. [2020-10-11 18:33:58,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:33:58,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:33:58,023 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:33:58,023 INFO L185 Difference]: Start difference. First operand has 64 places, 43 transitions, 110 flow. Second operand 9 states and 434 transitions. [2020-10-11 18:33:58,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 184 flow [2020-10-11 18:33:58,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 152 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:33:58,027 INFO L241 Difference]: Finished difference. Result has 64 places, 43 transitions, 114 flow [2020-10-11 18:33:58,027 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=114, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2020-10-11 18:33:58,028 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2020-10-11 18:33:58,028 INFO L481 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 114 flow [2020-10-11 18:33:58,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:33:58,029 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:58,029 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:58,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:33:58,029 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:58,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1419898419, now seen corresponding path program 1 times [2020-10-11 18:33:58,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:58,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903174544] [2020-10-11 18:33:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:58,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903174544] [2020-10-11 18:33:58,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:58,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:33:58,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104734246] [2020-10-11 18:33:58,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:33:58,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:58,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:33:58,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:33:58,366 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 56 [2020-10-11 18:33:58,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 114 flow. Second operand 7 states. [2020-10-11 18:33:58,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:58,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 56 [2020-10-11 18:33:58,367 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:58,508 INFO L129 PetriNetUnfolder]: 4/64 cut-off events. [2020-10-11 18:33:58,508 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2020-10-11 18:33:58,509 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 64 events. 4/64 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 2/65 useless extension candidates. Maximal degree in co-relation 113. Up to 7 conditions per place. [2020-10-11 18:33:58,509 INFO L132 encePairwiseOnDemand]: 48/56 looper letters, 6 selfloop transitions, 4 changer transitions 12/55 dead transitions. [2020-10-11 18:33:58,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 209 flow [2020-10-11 18:33:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:33:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:33:58,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 464 transitions. [2020-10-11 18:33:58,512 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2020-10-11 18:33:58,512 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 464 transitions. [2020-10-11 18:33:58,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 464 transitions. [2020-10-11 18:33:58,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:58,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 464 transitions. [2020-10-11 18:33:58,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:33:58,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:33:58,516 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:33:58,516 INFO L185 Difference]: Start difference. First operand has 64 places, 43 transitions, 114 flow. Second operand 10 states and 464 transitions. [2020-10-11 18:33:58,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 209 flow [2020-10-11 18:33:58,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 175 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:33:58,519 INFO L241 Difference]: Finished difference. Result has 67 places, 43 transitions, 128 flow [2020-10-11 18:33:58,520 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=128, PETRI_PLACES=67, PETRI_TRANSITIONS=43} [2020-10-11 18:33:58,520 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2020-10-11 18:33:58,520 INFO L481 AbstractCegarLoop]: Abstraction has has 67 places, 43 transitions, 128 flow [2020-10-11 18:33:58,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:33:58,520 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:33:58,521 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:33:58,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:33:58,521 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:33:58,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:33:58,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1172225499, now seen corresponding path program 1 times [2020-10-11 18:33:58,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:33:58,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811539743] [2020-10-11 18:33:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:33:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:33:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:33:58,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811539743] [2020-10-11 18:33:58,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:33:58,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:33:58,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131318931] [2020-10-11 18:33:58,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:33:58,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:33:58,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:33:58,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:33:58,804 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 56 [2020-10-11 18:33:58,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 43 transitions, 128 flow. Second operand 7 states. [2020-10-11 18:33:58,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:33:58,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 56 [2020-10-11 18:33:58,805 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:33:58,948 INFO L129 PetriNetUnfolder]: 4/49 cut-off events. [2020-10-11 18:33:58,949 INFO L130 PetriNetUnfolder]: For 33/36 co-relation queries the response was YES. [2020-10-11 18:33:58,949 INFO L80 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 49 events. 4/49 cut-off events. For 33/36 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 2/51 useless extension candidates. Maximal degree in co-relation 95. Up to 5 conditions per place. [2020-10-11 18:33:58,950 INFO L132 encePairwiseOnDemand]: 49/56 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2020-10-11 18:33:58,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 48 transitions, 182 flow [2020-10-11 18:33:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:33:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:33:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 458 transitions. [2020-10-11 18:33:58,952 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2020-10-11 18:33:58,953 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 458 transitions. [2020-10-11 18:33:58,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 458 transitions. [2020-10-11 18:33:58,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:33:58,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 458 transitions. [2020-10-11 18:33:58,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:33:58,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:33:58,956 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:33:58,956 INFO L185 Difference]: Start difference. First operand has 67 places, 43 transitions, 128 flow. Second operand 10 states and 458 transitions. [2020-10-11 18:33:58,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 48 transitions, 182 flow [2020-10-11 18:33:58,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 142 flow, removed 14 selfloop flow, removed 9 redundant places. [2020-10-11 18:33:58,959 INFO L241 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2020-10-11 18:33:58,959 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2020-10-11 18:33:58,959 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2020-10-11 18:33:58,959 INFO L481 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2020-10-11 18:33:58,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:33:58,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:33:58,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:33:58 BasicIcfg [2020-10-11 18:33:58,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:33:58,968 INFO L168 Benchmark]: Toolchain (without parser) took 3880.92 ms. Allocated memory was 251.1 MB in the beginning and 372.2 MB in the end (delta: 121.1 MB). Free memory was 206.3 MB in the beginning and 310.5 MB in the end (delta: -104.3 MB). Peak memory consumption was 16.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:33:58,969 INFO L168 Benchmark]: CDTParser took 1.54 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:33:58,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 796.51 ms. Allocated memory was 251.1 MB in the beginning and 313.5 MB in the end (delta: 62.4 MB). Free memory was 206.3 MB in the beginning and 264.2 MB in the end (delta: -57.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:33:58,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.16 ms. Allocated memory is still 313.5 MB. Free memory is still 264.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:33:58,971 INFO L168 Benchmark]: Boogie Preprocessor took 56.20 ms. Allocated memory is still 313.5 MB. Free memory was 264.2 MB in the beginning and 261.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:33:58,972 INFO L168 Benchmark]: RCFGBuilder took 389.13 ms. Allocated memory is still 313.5 MB. Free memory was 261.6 MB in the beginning and 239.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:33:58,973 INFO L168 Benchmark]: TraceAbstraction took 2577.23 ms. Allocated memory was 313.5 MB in the beginning and 372.2 MB in the end (delta: 58.7 MB). Free memory was 239.5 MB in the beginning and 310.5 MB in the end (delta: -71.0 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:33:58,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.54 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 796.51 ms. Allocated memory was 251.1 MB in the beginning and 313.5 MB in the end (delta: 62.4 MB). Free memory was 206.3 MB in the beginning and 264.2 MB in the end (delta: -57.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 54.16 ms. Allocated memory is still 313.5 MB. Free memory is still 264.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 56.20 ms. Allocated memory is still 313.5 MB. Free memory was 264.2 MB in the beginning and 261.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 389.13 ms. Allocated memory is still 313.5 MB. Free memory was 261.6 MB in the beginning and 239.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2577.23 ms. Allocated memory was 313.5 MB in the beginning and 372.2 MB in the end (delta: 58.7 MB). Free memory was 239.5 MB in the beginning and 310.5 MB in the end (delta: -71.0 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 105 SDslu, 280 SDs, 0 SdLazy, 236 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 14069 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...