/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 18:10:26,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 18:10:26,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 18:10:26,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 18:10:26,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 18:10:26,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 18:10:26,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 18:10:26,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 18:10:26,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 18:10:26,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 18:10:26,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 18:10:26,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 18:10:26,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 18:10:26,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 18:10:26,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 18:10:26,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 18:10:26,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 18:10:26,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 18:10:26,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 18:10:26,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 18:10:26,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 18:10:26,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 18:10:26,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 18:10:26,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 18:10:26,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 18:10:26,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 18:10:26,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 18:10:26,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 18:10:26,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 18:10:26,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 18:10:26,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 18:10:26,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 18:10:26,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 18:10:26,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 18:10:26,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 18:10:26,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 18:10:26,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf [2019-12-27 18:10:26,622 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 18:10:26,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 18:10:26,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 18:10:26,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 18:10:26,624 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 18:10:26,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 18:10:26,624 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 18:10:26,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 18:10:26,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 18:10:26,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 18:10:26,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 18:10:26,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 18:10:26,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 18:10:26,625 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 18:10:26,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 18:10:26,626 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 18:10:26,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 18:10:26,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 18:10:26,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 18:10:26,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 18:10:26,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 18:10:26,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 18:10:26,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 18:10:26,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 18:10:26,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 18:10:26,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 18:10:26,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 18:10:26,628 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 18:10:26,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 18:10:26,629 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 18:10:26,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 18:10:26,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 18:10:26,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 18:10:26,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 18:10:26,933 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 18:10:26,933 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 18:10:26,934 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2019-12-27 18:10:26,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886cec797/c529ad2a2adc4b3ab174f158752fce49/FLAGb7313baf4 [2019-12-27 18:10:27,487 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 18:10:27,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2019-12-27 18:10:27,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886cec797/c529ad2a2adc4b3ab174f158752fce49/FLAGb7313baf4 [2019-12-27 18:10:27,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886cec797/c529ad2a2adc4b3ab174f158752fce49 [2019-12-27 18:10:27,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 18:10:27,834 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 18:10:27,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 18:10:27,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 18:10:27,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 18:10:27,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:10:27" (1/1) ... [2019-12-27 18:10:27,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64745772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:27, skipping insertion in model container [2019-12-27 18:10:27,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:10:27" (1/1) ... [2019-12-27 18:10:27,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 18:10:27,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 18:10:28,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:10:28,404 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 18:10:28,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:10:28,548 INFO L208 MainTranslator]: Completed translation [2019-12-27 18:10:28,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28 WrapperNode [2019-12-27 18:10:28,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 18:10:28,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 18:10:28,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 18:10:28,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 18:10:28,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28" (1/1) ... [2019-12-27 18:10:28,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28" (1/1) ... [2019-12-27 18:10:28,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 18:10:28,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 18:10:28,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 18:10:28,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 18:10:28,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28" (1/1) ... [2019-12-27 18:10:28,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28" (1/1) ... [2019-12-27 18:10:28,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28" (1/1) ... [2019-12-27 18:10:28,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28" (1/1) ... [2019-12-27 18:10:28,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28" (1/1) ... [2019-12-27 18:10:28,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28" (1/1) ... [2019-12-27 18:10:28,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28" (1/1) ... [2019-12-27 18:10:28,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 18:10:28,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 18:10:28,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 18:10:28,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 18:10:28,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 18:10:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 18:10:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 18:10:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 18:10:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 18:10:28,682 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 18:10:28,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 18:10:28,682 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 18:10:28,682 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 18:10:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 18:10:28,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 18:10:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 18:10:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 18:10:28,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 18:10:28,685 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 18:10:29,055 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 18:10:29,056 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 18:10:29,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:10:29 BoogieIcfgContainer [2019-12-27 18:10:29,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 18:10:29,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 18:10:29,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 18:10:29,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 18:10:29,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 06:10:27" (1/3) ... [2019-12-27 18:10:29,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5782cd75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:10:29, skipping insertion in model container [2019-12-27 18:10:29,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:10:28" (2/3) ... [2019-12-27 18:10:29,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5782cd75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:10:29, skipping insertion in model container [2019-12-27 18:10:29,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:10:29" (3/3) ... [2019-12-27 18:10:29,069 INFO L109 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2019-12-27 18:10:29,078 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 18:10:29,078 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 18:10:29,085 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 18:10:29,086 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 18:10:29,115 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,115 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,115 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,116 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,116 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,117 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,117 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,117 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,117 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,118 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,118 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,118 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,119 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,119 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,119 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,119 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,120 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,120 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,124 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,125 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,125 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,125 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,131 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,132 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,132 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,133 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,137 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,138 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,138 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,138 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:10:29,154 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 18:10:29,181 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 18:10:29,181 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 18:10:29,181 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 18:10:29,181 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 18:10:29,182 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 18:10:29,183 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 18:10:29,183 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 18:10:29,184 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 18:10:29,201 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-27 18:10:29,203 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 18:10:29,257 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 18:10:29,257 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:10:29,264 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:10:29,266 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 18:10:29,285 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 18:10:29,285 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:10:29,287 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:10:29,289 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 18:10:29,290 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 18:10:30,696 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-12-27 18:10:30,869 INFO L206 etLargeBlockEncoding]: Checked pairs total: 442 [2019-12-27 18:10:30,870 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-27 18:10:30,875 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-27 18:10:30,889 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-27 18:10:30,892 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-27 18:10:30,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 18:10:30,904 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:10:30,905 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:10:30,906 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:10:30,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:10:30,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1632263201, now seen corresponding path program 1 times [2019-12-27 18:10:30,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:10:30,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315720215] [2019-12-27 18:10:30,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:10:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:10:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:10:31,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315720215] [2019-12-27 18:10:31,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:10:31,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 18:10:31,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1882178294] [2019-12-27 18:10:31,246 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:10:31,252 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:10:31,268 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 18:10:31,268 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:10:31,273 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:10:31,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:10:31,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:10:31,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:10:31,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:10:31,291 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2019-12-27 18:10:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:10:31,317 INFO L93 Difference]: Finished difference Result 50 states and 104 transitions. [2019-12-27 18:10:31,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:10:31,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 18:10:31,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:10:31,335 INFO L225 Difference]: With dead ends: 50 [2019-12-27 18:10:31,336 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 18:10:31,340 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:10:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 18:10:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 18:10:31,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 18:10:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 18:10:31,383 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-27 18:10:31,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:10:31,384 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 18:10:31,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:10:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 18:10:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 18:10:31,386 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:10:31,387 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:10:31,391 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:10:31,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:10:31,391 INFO L82 PathProgramCache]: Analyzing trace with hash -939391706, now seen corresponding path program 1 times [2019-12-27 18:10:31,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:10:31,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685227322] [2019-12-27 18:10:31,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:10:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:10:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:10:31,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685227322] [2019-12-27 18:10:31,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:10:31,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:10:31,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1286972308] [2019-12-27 18:10:31,513 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:10:31,514 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:10:31,521 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 18:10:31,521 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:10:31,521 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:10:31,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:10:31,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:10:31,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:10:31,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:10:31,527 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-27 18:10:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:10:31,567 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-27 18:10:31,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:10:31,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 18:10:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:10:31,569 INFO L225 Difference]: With dead ends: 36 [2019-12-27 18:10:31,569 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 18:10:31,570 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 18:10:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 18:10:31,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-27 18:10:31,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-27 18:10:31,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2019-12-27 18:10:31,578 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2019-12-27 18:10:31,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:10:31,578 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2019-12-27 18:10:31,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:10:31,579 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2019-12-27 18:10:31,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 18:10:31,579 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:10:31,580 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:10:31,580 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:10:31,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:10:31,580 INFO L82 PathProgramCache]: Analyzing trace with hash 941857909, now seen corresponding path program 1 times [2019-12-27 18:10:31,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:10:31,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409812191] [2019-12-27 18:10:31,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:10:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:10:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:10:31,651 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409812191] [2019-12-27 18:10:31,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:10:31,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:10:31,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [366548781] [2019-12-27 18:10:31,652 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:10:31,653 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:10:31,655 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 11 states and 10 transitions. [2019-12-27 18:10:31,655 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:10:31,656 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:10:31,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:10:31,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:10:31,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:10:31,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:10:31,657 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 3 states. [2019-12-27 18:10:31,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:10:31,671 INFO L93 Difference]: Finished difference Result 29 states and 46 transitions. [2019-12-27 18:10:31,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:10:31,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-27 18:10:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:10:31,674 INFO L225 Difference]: With dead ends: 29 [2019-12-27 18:10:31,674 INFO L226 Difference]: Without dead ends: 17 [2019-12-27 18:10:31,674 INFO L631 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 [2019-12-27 18:10:31,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-27 18:10:31,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-27 18:10:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-27 18:10:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-27 18:10:31,680 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-27 18:10:31,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:10:31,681 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-27 18:10:31,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:10:31,681 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-27 18:10:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 18:10:31,681 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:10:31,682 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:10:31,682 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:10:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:10:31,682 INFO L82 PathProgramCache]: Analyzing trace with hash -867176101, now seen corresponding path program 1 times [2019-12-27 18:10:31,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:10:31,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398745863] [2019-12-27 18:10:31,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:10:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:10:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:10:31,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398745863] [2019-12-27 18:10:31,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:10:31,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:10:31,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1270208859] [2019-12-27 18:10:31,793 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:10:31,794 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:10:31,797 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 12 states and 11 transitions. [2019-12-27 18:10:31,797 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:10:31,797 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:10:31,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:10:31,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:10:31,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:10:31,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:10:31,799 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-27 18:10:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:10:31,813 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2019-12-27 18:10:31,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:10:31,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 18:10:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:10:31,814 INFO L225 Difference]: With dead ends: 16 [2019-12-27 18:10:31,814 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 18:10:31,815 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 18:10:31,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 18:10:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 18:10:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 18:10:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 18:10:31,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 18:10:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:10:31,816 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 18:10:31,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:10:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 18:10:31,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 18:10:31,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 06:10:31 BasicIcfg [2019-12-27 18:10:31,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 18:10:31,823 INFO L168 Benchmark]: Toolchain (without parser) took 3989.80 ms. Allocated memory was 146.8 MB in the beginning and 243.3 MB in the end (delta: 96.5 MB). Free memory was 102.9 MB in the beginning and 133.5 MB in the end (delta: -30.6 MB). Peak memory consumption was 65.9 MB. Max. memory is 7.1 GB. [2019-12-27 18:10:31,824 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-12-27 18:10:31,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.82 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 161.2 MB in the end (delta: -58.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-12-27 18:10:31,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.29 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-27 18:10:31,827 INFO L168 Benchmark]: Boogie Preprocessor took 24.82 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 18:10:31,828 INFO L168 Benchmark]: RCFGBuilder took 436.23 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 137.3 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2019-12-27 18:10:31,829 INFO L168 Benchmark]: TraceAbstraction took 2760.83 ms. Allocated memory was 204.5 MB in the beginning and 243.3 MB in the end (delta: 38.8 MB). Free memory was 136.7 MB in the beginning and 133.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2019-12-27 18:10:31,834 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 714.82 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 161.2 MB in the end (delta: -58.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.29 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.82 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 436.23 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 137.3 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2760.83 ms. Allocated memory was 204.5 MB in the beginning and 243.3 MB in the end (delta: 38.8 MB). Free memory was 136.7 MB in the beginning and 133.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 63 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 234 VarBasedMoverChecksPositive, 15 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 442 CheckedPairsTotal, 45 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 25 SDslu, 19 SDs, 0 SdLazy, 15 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 738 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...