/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:37:26,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:37:26,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:37:26,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:37:26,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:37:26,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:37:26,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:37:26,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:37:26,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:37:26,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:37:26,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:37:26,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:37:26,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:37:26,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:37:26,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:37:26,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:37:26,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:37:26,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:37:26,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:37:26,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:37:26,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:37:26,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:37:26,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:37:26,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:37:26,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:37:26,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:37:26,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:37:26,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:37:26,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:37:26,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:37:26,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:37:26,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:37:26,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:37:26,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:37:26,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:37:26,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:37:26,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:37:26,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:37:26,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:37:26,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:37:26,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:37:26,760 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.epf [2020-04-17 22:37:26,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:37:26,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:37:26,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:37:26,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:37:26,787 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:37:26,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:37:26,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:37:26,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:37:26,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:37:26,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:37:26,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:37:26,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:37:26,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:37:26,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:37:26,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:37:26,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:37:26,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:37:26,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:37:26,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:37:26,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:37:26,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:37:26,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:37:26,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:37:26,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:37:26,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:37:26,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:37:26,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:37:26,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:37:26,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:37:27,081 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:37:27,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:37:27,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:37:27,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:37:27,104 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:37:27,104 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-04-17 22:37:27,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b607a31a8/f008ac1e632a474d932081679befd196/FLAG06679f147 [2020-04-17 22:37:27,711 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:37:27,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_tso.oepc.i [2020-04-17 22:37:27,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b607a31a8/f008ac1e632a474d932081679befd196/FLAG06679f147 [2020-04-17 22:37:28,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b607a31a8/f008ac1e632a474d932081679befd196 [2020-04-17 22:37:28,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:37:28,041 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:37:28,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:37:28,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:37:28,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:37:28,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:37:28" (1/1) ... [2020-04-17 22:37:28,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2748702d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28, skipping insertion in model container [2020-04-17 22:37:28,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:37:28" (1/1) ... [2020-04-17 22:37:28,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:37:28,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:37:28,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:37:28,528 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:37:28,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:37:28,697 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:37:28,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28 WrapperNode [2020-04-17 22:37:28,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:37:28,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:37:28,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:37:28,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:37:28,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28" (1/1) ... [2020-04-17 22:37:28,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28" (1/1) ... [2020-04-17 22:37:28,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:37:28,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:37:28,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:37:28,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:37:28,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28" (1/1) ... [2020-04-17 22:37:28,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28" (1/1) ... [2020-04-17 22:37:28,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28" (1/1) ... [2020-04-17 22:37:28,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28" (1/1) ... [2020-04-17 22:37:28,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28" (1/1) ... [2020-04-17 22:37:28,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28" (1/1) ... [2020-04-17 22:37:28,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28" (1/1) ... [2020-04-17 22:37:28,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:37:28,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:37:28,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:37:28,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:37:28,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28" (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 [2020-04-17 22:37:28,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:37:28,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:37:28,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:37:28,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:37:28,868 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:37:28,868 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:37:28,869 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:37:28,869 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:37:28,869 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:37:28,869 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:37:28,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:37:28,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:37:28,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:37:28,871 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:37:29,245 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:37:29,245 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:37:29,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:37:29 BoogieIcfgContainer [2020-04-17 22:37:29,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:37:29,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:37:29,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:37:29,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:37:29,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:37:28" (1/3) ... [2020-04-17 22:37:29,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d81546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:37:29, skipping insertion in model container [2020-04-17 22:37:29,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:37:28" (2/3) ... [2020-04-17 22:37:29,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d81546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:37:29, skipping insertion in model container [2020-04-17 22:37:29,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:37:29" (3/3) ... [2020-04-17 22:37:29,258 INFO L109 eAbstractionObserver]: Analyzing ICFG safe035_tso.oepc.i [2020-04-17 22:37:29,268 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:37:29,269 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:37:29,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:37:29,278 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:37:29,304 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,305 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,305 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,305 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,306 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,306 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,307 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,307 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,307 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,307 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,308 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,308 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,309 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,309 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,309 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,309 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,310 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,310 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,314 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,315 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,315 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,315 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,322 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,322 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,323 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,323 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,327 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,328 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,328 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,328 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:37:29,344 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:37:29,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:37:29,361 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:37:29,361 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:37:29,361 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:37:29,361 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:37:29,361 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:37:29,361 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:37:29,362 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:37:29,376 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 22:37:29,378 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:37:29,418 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:37:29,418 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:37:29,423 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:37:29,426 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:37:29,448 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:37:29,449 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:37:29,451 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 22:37:29,455 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:37:29,456 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:37:31,360 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2414 [2020-04-17 22:37:31,360 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-17 22:37:31,365 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-17 22:37:31,393 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:37:31,395 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:37:31,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:37:31,405 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:31,406 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:31,407 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:31,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-04-17 22:37:31,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:31,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159661479] [2020-04-17 22:37:31,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:31,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159661479] [2020-04-17 22:37:31,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:31,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:37:31,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861468728] [2020-04-17 22:37:31,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:37:31,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:31,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:37:31,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:31,769 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:37:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:31,820 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-04-17 22:37:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:37:31,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:37:31,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:31,839 INFO L225 Difference]: With dead ends: 294 [2020-04-17 22:37:31,840 INFO L226 Difference]: Without dead ends: 230 [2020-04-17 22:37:31,841 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:31,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-04-17 22:37:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-04-17 22:37:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-04-17 22:37:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-04-17 22:37:31,911 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-04-17 22:37:31,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:31,912 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-04-17 22:37:31,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:37:31,912 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-04-17 22:37:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:37:31,914 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:31,914 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:31,914 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:31,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:31,915 INFO L82 PathProgramCache]: Analyzing trace with hash 113122264, now seen corresponding path program 1 times [2020-04-17 22:37:31,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:31,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623289372] [2020-04-17 22:37:31,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:31,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623289372] [2020-04-17 22:37:31,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:31,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:37:32,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050179747] [2020-04-17 22:37:32,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:37:32,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:32,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:37:32,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:32,004 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-04-17 22:37:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:32,016 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-17 22:37:32,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:37:32,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:37:32,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:32,024 INFO L225 Difference]: With dead ends: 202 [2020-04-17 22:37:32,025 INFO L226 Difference]: Without dead ends: 202 [2020-04-17 22:37:32,026 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-17 22:37:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-17 22:37:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 22:37:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-17 22:37:32,058 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-17 22:37:32,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:32,058 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-17 22:37:32,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:37:32,059 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-17 22:37:32,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:37:32,061 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:32,061 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:32,061 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:32,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:32,061 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-04-17 22:37:32,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:32,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128770710] [2020-04-17 22:37:32,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:32,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128770710] [2020-04-17 22:37:32,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:32,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:37:32,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500041028] [2020-04-17 22:37:32,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:37:32,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:32,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:37:32,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:32,133 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-17 22:37:32,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:32,148 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-04-17 22:37:32,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:37:32,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 22:37:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:32,150 INFO L225 Difference]: With dead ends: 266 [2020-04-17 22:37:32,150 INFO L226 Difference]: Without dead ends: 140 [2020-04-17 22:37:32,151 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:37:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-17 22:37:32,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-17 22:37:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-17 22:37:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-04-17 22:37:32,161 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-04-17 22:37:32,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:32,161 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-04-17 22:37:32,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:37:32,161 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-04-17 22:37:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:37:32,162 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:32,163 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:32,163 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:32,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-04-17 22:37:32,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:32,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564126111] [2020-04-17 22:37:32,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:32,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564126111] [2020-04-17 22:37:32,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:32,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:37:32,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412781224] [2020-04-17 22:37:32,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:32,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:32,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:32,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:32,253 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-04-17 22:37:32,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:32,288 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-04-17 22:37:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:37:32,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:37:32,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:32,290 INFO L225 Difference]: With dead ends: 165 [2020-04-17 22:37:32,290 INFO L226 Difference]: Without dead ends: 113 [2020-04-17 22:37:32,291 INFO L678 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 [2020-04-17 22:37:32,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-04-17 22:37:32,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-04-17 22:37:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-04-17 22:37:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-04-17 22:37:32,297 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-04-17 22:37:32,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:32,297 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-04-17 22:37:32,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-04-17 22:37:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:37:32,299 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:32,299 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:32,299 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:32,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:32,300 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-04-17 22:37:32,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:32,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614697539] [2020-04-17 22:37:32,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:32,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614697539] [2020-04-17 22:37:32,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:32,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:32,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612056343] [2020-04-17 22:37:32,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:37:32,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:32,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:37:32,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:37:32,365 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-04-17 22:37:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:32,425 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-04-17 22:37:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:37:32,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 22:37:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:32,427 INFO L225 Difference]: With dead ends: 111 [2020-04-17 22:37:32,427 INFO L226 Difference]: Without dead ends: 80 [2020-04-17 22:37:32,428 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:37:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-17 22:37:32,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-17 22:37:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-17 22:37:32,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-04-17 22:37:32,444 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-04-17 22:37:32,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:32,444 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-04-17 22:37:32,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:37:32,444 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-04-17 22:37:32,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:37:32,445 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:32,445 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:32,446 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:32,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:32,449 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-04-17 22:37:32,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:32,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637528907] [2020-04-17 22:37:32,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:32,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637528907] [2020-04-17 22:37:32,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:32,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:37:32,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843824760] [2020-04-17 22:37:32,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:37:32,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:32,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:37:32,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:37:32,573 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-04-17 22:37:32,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:32,627 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-04-17 22:37:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:37:32,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 22:37:32,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:32,628 INFO L225 Difference]: With dead ends: 75 [2020-04-17 22:37:32,628 INFO L226 Difference]: Without dead ends: 66 [2020-04-17 22:37:32,629 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:37:32,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-17 22:37:32,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-04-17 22:37:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-04-17 22:37:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-04-17 22:37:32,632 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-04-17 22:37:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:32,632 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-04-17 22:37:32,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:37:32,632 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-04-17 22:37:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:37:32,633 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:32,633 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:32,633 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:32,634 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-04-17 22:37:32,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:32,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220336987] [2020-04-17 22:37:32,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:32,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220336987] [2020-04-17 22:37:32,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:32,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:32,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211735205] [2020-04-17 22:37:32,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:32,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:32,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:32,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:32,671 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-04-17 22:37:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:32,685 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-04-17 22:37:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:37:32,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:37:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:32,686 INFO L225 Difference]: With dead ends: 85 [2020-04-17 22:37:32,686 INFO L226 Difference]: Without dead ends: 48 [2020-04-17 22:37:32,686 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:32,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-04-17 22:37:32,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-04-17 22:37:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-04-17 22:37:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-04-17 22:37:32,689 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-04-17 22:37:32,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:32,689 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-04-17 22:37:32,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-04-17 22:37:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:37:32,690 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:37:32,690 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:37:32,691 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:37:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:37:32,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-04-17 22:37:32,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:37:32,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601371488] [2020-04-17 22:37:32,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:37:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:37:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:37:32,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601371488] [2020-04-17 22:37:32,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:37:32,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:37:32,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916795201] [2020-04-17 22:37:32,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:37:32,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:37:32,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:37:32,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:37:32,725 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-04-17 22:37:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:37:32,735 INFO L93 Difference]: Finished difference Result 47 states and 82 transitions. [2020-04-17 22:37:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:37:32,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:37:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:37:32,736 INFO L225 Difference]: With dead ends: 47 [2020-04-17 22:37:32,736 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:37:32,736 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:37:32,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:37:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:37:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:37:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:37:32,737 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 22:37:32,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:37:32,738 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:37:32,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:37:32,738 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:37:32,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:37:32,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:37:32 BasicIcfg [2020-04-17 22:37:32,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:37:32,745 INFO L168 Benchmark]: Toolchain (without parser) took 4724.08 ms. Allocated memory was 143.1 MB in the beginning and 251.7 MB in the end (delta: 108.5 MB). Free memory was 99.7 MB in the beginning and 172.6 MB in the end (delta: -72.9 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:32,746 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 22:37:32,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.25 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 97.9 MB in the beginning and 154.2 MB in the end (delta: -56.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:32,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.74 ms. Allocated memory is still 199.8 MB. Free memory was 154.2 MB in the beginning and 152.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:32,748 INFO L168 Benchmark]: Boogie Preprocessor took 30.61 ms. Allocated memory is still 199.8 MB. Free memory was 152.1 MB in the beginning and 150.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:32,749 INFO L168 Benchmark]: RCFGBuilder took 450.77 ms. Allocated memory is still 199.8 MB. Free memory was 150.7 MB in the beginning and 128.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:32,750 INFO L168 Benchmark]: TraceAbstraction took 3491.21 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 127.7 MB in the beginning and 172.6 MB in the end (delta: -44.9 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:37:32,754 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.25 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 97.9 MB in the beginning and 154.2 MB in the end (delta: -56.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 67.74 ms. Allocated memory is still 199.8 MB. Free memory was 154.2 MB in the beginning and 152.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.61 ms. Allocated memory is still 199.8 MB. Free memory was 152.1 MB in the beginning and 150.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.77 ms. Allocated memory is still 199.8 MB. Free memory was 150.7 MB in the beginning and 128.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3491.21 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 127.7 MB in the beginning and 172.6 MB in the end (delta: -44.9 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 643 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2414 CheckedPairsTotal, 56 TotalNumberOfCompositions - 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 156 SDtfs, 124 SDslu, 170 SDs, 0 SdLazy, 107 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2892 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...