/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:47:26,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:47:26,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:47:26,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:47:26,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:47:26,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:47:26,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:47:26,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:47:26,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:47:26,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:47:26,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:47:26,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:47:26,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:47:26,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:47:26,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:47:26,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:47:26,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:47:26,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:47:26,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:47:26,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:47:26,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:47:26,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:47:26,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:47:26,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:47:26,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:47:26,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:47:26,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:47:26,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:47:26,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:47:26,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:47:26,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:47:26,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:47:26,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:47:26,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:47:26,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:47:26,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:47:26,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:47:26,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:47:26,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:47:26,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:47:26,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:47:26,771 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-VariableLbe-McrStrategy.epf [2020-04-18 15:47:26,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:47:26,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:47:26,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:47:26,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:47:26,795 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:47:26,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:47:26,795 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:47:26,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:47:26,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:47:26,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:47:26,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:47:26,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:47:26,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:47:26,798 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:47:26,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:47:26,798 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:47:26,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:47:26,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:47:26,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:47:26,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:47:26,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:47:26,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:47:26,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:47:26,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:47:26,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:47:26,800 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:47:26,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:47:26,800 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:47:26,800 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:47:26,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:47:26,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:47:27,075 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:47:27,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:47:27,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:47:27,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:47:27,095 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:47:27,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-04-18 15:47:27,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/851055955/6c9257255ce0442499857e27b424a462/FLAGfcce6fe2b [2020-04-18 15:47:27,775 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:47:27,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-04-18 15:47:27,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/851055955/6c9257255ce0442499857e27b424a462/FLAGfcce6fe2b [2020-04-18 15:47:28,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/851055955/6c9257255ce0442499857e27b424a462 [2020-04-18 15:47:28,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:47:28,059 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:47:28,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:47:28,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:47:28,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:47:28,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:47:28" (1/1) ... [2020-04-18 15:47:28,067 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 18.04 03:47:28, skipping insertion in model container [2020-04-18 15:47:28,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:47:28" (1/1) ... [2020-04-18 15:47:28,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:47:28,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:47:28,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:47:28,689 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:47:28,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:47:28,829 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:47:28,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28 WrapperNode [2020-04-18 15:47:28,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:47:28,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:47:28,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:47:28,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:47:28,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28" (1/1) ... [2020-04-18 15:47:28,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28" (1/1) ... [2020-04-18 15:47:28,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:47:28,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:47:28,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:47:28,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:47:28,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28" (1/1) ... [2020-04-18 15:47:28,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28" (1/1) ... [2020-04-18 15:47:28,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28" (1/1) ... [2020-04-18 15:47:28,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28" (1/1) ... [2020-04-18 15:47:28,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28" (1/1) ... [2020-04-18 15:47:28,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28" (1/1) ... [2020-04-18 15:47:28,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28" (1/1) ... [2020-04-18 15:47:28,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:47:28,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:47:28,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:47:28,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:47:28,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28" (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 [2020-04-18 15:47:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:47:28,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:47:28,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:47:28,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:47:28,977 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:47:28,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:47:28,977 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:47:28,978 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:47:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:47:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:47:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 15:47:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 15:47:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:47:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:47:28,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:47:28,983 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:47:29,382 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:47:29,383 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:47:29,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:47:29 BoogieIcfgContainer [2020-04-18 15:47:29,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:47:29,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:47:29,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:47:29,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:47:29,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:47:28" (1/3) ... [2020-04-18 15:47:29,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7860165c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:47:29, skipping insertion in model container [2020-04-18 15:47:29,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:47:28" (2/3) ... [2020-04-18 15:47:29,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7860165c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:47:29, skipping insertion in model container [2020-04-18 15:47:29,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:47:29" (3/3) ... [2020-04-18 15:47:29,396 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.opt.i [2020-04-18 15:47:29,407 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:47:29,407 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:47:29,414 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:47:29,415 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:47:29,443 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,444 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,444 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,444 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,445 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,445 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,446 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,446 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,446 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,447 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,447 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,447 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,448 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,448 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,448 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,448 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,449 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,449 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,450 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,450 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,450 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,450 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,451 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,451 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,455 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,455 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,456 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,456 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,462 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,462 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,462 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,463 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,467 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,467 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,467 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,468 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,478 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,479 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,479 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,479 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:47:29,494 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 15:47:29,510 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:47:29,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:47:29,510 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:47:29,510 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:47:29,510 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:47:29,510 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:47:29,510 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:47:29,510 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:47:29,525 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-04-18 15:47:29,527 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 15:47:29,575 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 15:47:29,575 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:47:29,583 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 15:47:29,586 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 15:47:29,613 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 15:47:29,613 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:47:29,614 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 15:47:29,617 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-04-18 15:47:29,618 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:47:31,180 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-18 15:47:31,241 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-04-18 15:47:31,241 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-04-18 15:47:31,244 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-04-18 15:47:31,348 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-04-18 15:47:31,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-04-18 15:47:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:47:31,370 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:47:31,370 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:47:31,371 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:47:31,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:31,376 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-04-18 15:47:31,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:47:31,381 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [761719195] [2020-04-18 15:47:31,393 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:31,402 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:47:31,403 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 15:47:31,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:47:31,404 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:47:31,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:31,405 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 2 times [2020-04-18 15:47:31,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:31,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119906454] [2020-04-18 15:47:31,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:31,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119906454] [2020-04-18 15:47:31,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:31,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:47:31,673 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:31,675 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:31,681 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 15:47:31,682 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:31,687 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:47:31,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:47:31,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:47:31,693 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-04-18 15:47:31,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:31,698 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 15:47:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 15:47:31,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:47:31,702 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [761719195] [2020-04-18 15:47:31,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:47:31,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:47:31,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [761719195] [2020-04-18 15:47:31,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:47:31,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:47:31,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:47:31,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:47:31,719 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-04-18 15:47:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:31,768 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-04-18 15:47:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:47:31,769 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 15:47:31,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:47:31,831 INFO L225 Difference]: With dead ends: 1450 [2020-04-18 15:47:31,831 INFO L226 Difference]: Without dead ends: 1194 [2020-04-18 15:47:31,833 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:47:31,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-04-18 15:47:31,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-04-18 15:47:31,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-04-18 15:47:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-04-18 15:47:31,986 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-04-18 15:47:31,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:47:31,988 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-04-18 15:47:31,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:47:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-04-18 15:47:31,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:47:31,990 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:47:31,990 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:47:31,991 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:47:31,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:31,991 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-04-18 15:47:31,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:47:31,992 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1324103794] [2020-04-18 15:47:31,992 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:31,993 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 15:47:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:47:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:47:31,994 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:47:31,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:31,994 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 2 times [2020-04-18 15:47:31,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:31,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897707516] [2020-04-18 15:47:31,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:32,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897707516] [2020-04-18 15:47:32,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:32,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:47:32,180 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:32,181 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:32,182 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 15:47:32,182 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:32,194 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:47:32,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:47:32,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:47:32,195 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 15:47:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:32,209 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 15:47:32,209 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 15:47:32,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:47:32,210 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1324103794] [2020-04-18 15:47:32,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:47:32,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:47:32,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1324103794] [2020-04-18 15:47:32,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:47:32,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:47:32,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:47:32,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:47:32,212 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-04-18 15:47:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:32,243 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-04-18 15:47:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:47:32,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 15:47:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:47:32,253 INFO L225 Difference]: With dead ends: 1322 [2020-04-18 15:47:32,253 INFO L226 Difference]: Without dead ends: 1066 [2020-04-18 15:47:32,255 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:47:32,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-04-18 15:47:32,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-04-18 15:47:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-04-18 15:47:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-04-18 15:47:32,329 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-04-18 15:47:32,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:47:32,329 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-04-18 15:47:32,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:47:32,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-04-18 15:47:32,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:47:32,334 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:47:32,335 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:47:32,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:47:32,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:32,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1527944373, now seen corresponding path program 1 times [2020-04-18 15:47:32,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:47:32,338 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1393116519] [2020-04-18 15:47:32,338 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:32,339 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 15:47:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:47:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:47:32,340 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:47:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:32,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1527944373, now seen corresponding path program 2 times [2020-04-18 15:47:32,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:32,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308746424] [2020-04-18 15:47:32,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:32,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308746424] [2020-04-18 15:47:32,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:32,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:47:32,418 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:32,419 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:32,421 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-04-18 15:47:32,421 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:32,432 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:47:32,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:47:32,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:47:32,433 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-04-18 15:47:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:32,442 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2020-04-18 15:47:32,443 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2020-04-18 15:47:32,443 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:47:32,443 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1393116519] [2020-04-18 15:47:32,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:47:32,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:47:32,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1393116519] [2020-04-18 15:47:32,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:47:32,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:47:32,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:47:32,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:47:32,445 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-04-18 15:47:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:32,470 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-04-18 15:47:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:47:32,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 15:47:32,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:47:32,479 INFO L225 Difference]: With dead ends: 1162 [2020-04-18 15:47:32,479 INFO L226 Difference]: Without dead ends: 970 [2020-04-18 15:47:32,479 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:47:32,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-04-18 15:47:32,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-04-18 15:47:32,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-04-18 15:47:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-04-18 15:47:32,516 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-04-18 15:47:32,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:47:32,516 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-04-18 15:47:32,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:47:32,516 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-04-18 15:47:32,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:47:32,518 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:47:32,518 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:47:32,518 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:47:32,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:32,519 INFO L82 PathProgramCache]: Analyzing trace with hash 847962781, now seen corresponding path program 1 times [2020-04-18 15:47:32,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:47:32,519 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [8333064] [2020-04-18 15:47:32,520 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:32,521 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 68 transitions. [2020-04-18 15:47:32,521 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 15:47:32,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:47:32,522 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:47:32,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:32,522 INFO L82 PathProgramCache]: Analyzing trace with hash 847962781, now seen corresponding path program 2 times [2020-04-18 15:47:32,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:32,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948655957] [2020-04-18 15:47:32,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:32,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948655957] [2020-04-18 15:47:32,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:32,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:47:32,582 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:32,583 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:32,588 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 54 transitions. [2020-04-18 15:47:32,588 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:32,595 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:47:32,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:47:32,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:47:32,596 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-04-18 15:47:32,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:32,604 INFO L93 Difference]: Finished difference Result 38 states and 68 transitions. [2020-04-18 15:47:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 68 transitions. [2020-04-18 15:47:32,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:47:32,605 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [8333064] [2020-04-18 15:47:32,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:47:32,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:47:32,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [8333064] [2020-04-18 15:47:32,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:47:32,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:47:32,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:47:32,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:47:32,606 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-04-18 15:47:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:32,630 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-04-18 15:47:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:47:32,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 15:47:32,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:47:32,638 INFO L225 Difference]: With dead ends: 1042 [2020-04-18 15:47:32,638 INFO L226 Difference]: Without dead ends: 898 [2020-04-18 15:47:32,639 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:47:32,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-04-18 15:47:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-04-18 15:47:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-04-18 15:47:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-04-18 15:47:32,669 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-04-18 15:47:32,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:47:32,670 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-04-18 15:47:32,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:47:32,670 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-04-18 15:47:32,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:47:32,672 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:47:32,672 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:47:32,672 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:47:32,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:32,672 INFO L82 PathProgramCache]: Analyzing trace with hash 517018401, now seen corresponding path program 1 times [2020-04-18 15:47:32,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:47:32,673 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1122744457] [2020-04-18 15:47:32,674 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:32,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 136 transitions. [2020-04-18 15:47:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-04-18 15:47:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:47:32,676 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:47:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:32,677 INFO L82 PathProgramCache]: Analyzing trace with hash 517042581, now seen corresponding path program 2 times [2020-04-18 15:47:32,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:32,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438286890] [2020-04-18 15:47:32,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:32,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438286890] [2020-04-18 15:47:32,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:32,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:47:32,725 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:32,727 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:32,732 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 57 transitions. [2020-04-18 15:47:32,732 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:32,742 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:47:32,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:47:32,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:47:32,743 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 4 states. [2020-04-18 15:47:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:32,757 INFO L93 Difference]: Finished difference Result 70 states and 148 transitions. [2020-04-18 15:47:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 148 transitions. [2020-04-18 15:47:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:47:32,758 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:47:32,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:32,758 INFO L82 PathProgramCache]: Analyzing trace with hash 517018401, now seen corresponding path program 3 times [2020-04-18 15:47:32,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:32,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59559028] [2020-04-18 15:47:32,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:32,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59559028] [2020-04-18 15:47:32,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:32,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:47:32,807 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:32,808 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:32,814 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 98 transitions. [2020-04-18 15:47:32,814 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:32,872 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:47:32,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:47:32,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:47:32,873 INFO L87 Difference]: Start difference. First operand 70 states and 148 transitions. Second operand 6 states. [2020-04-18 15:47:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:32,902 INFO L93 Difference]: Finished difference Result 70 states and 148 transitions. [2020-04-18 15:47:32,902 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 148 transitions. [2020-04-18 15:47:32,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:47:32,903 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1122744457] [2020-04-18 15:47:32,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:47:32,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:47:32,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1122744457] [2020-04-18 15:47:32,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:47:32,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:47:32,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:47:32,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:47:32,905 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 7 states. [2020-04-18 15:47:32,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:32,967 INFO L93 Difference]: Finished difference Result 1090 states and 3695 transitions. [2020-04-18 15:47:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 15:47:32,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-04-18 15:47:32,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:47:32,971 INFO L225 Difference]: With dead ends: 1090 [2020-04-18 15:47:32,971 INFO L226 Difference]: Without dead ends: 472 [2020-04-18 15:47:32,972 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:47:32,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-04-18 15:47:32,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-04-18 15:47:32,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-04-18 15:47:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-04-18 15:47:32,988 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 14 [2020-04-18 15:47:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:47:32,988 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-04-18 15:47:32,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:47:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-04-18 15:47:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:47:32,990 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:47:32,990 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:47:33,012 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:47:33,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:33,013 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-04-18 15:47:33,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:47:33,013 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [242113289] [2020-04-18 15:47:33,013 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:33,015 INFO L259 McrAutomatonBuilder]: Finished intersection with 126 states and 344 transitions. [2020-04-18 15:47:33,016 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-04-18 15:47:33,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:47:33,017 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:47:33,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:33,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1338349554, now seen corresponding path program 2 times [2020-04-18 15:47:33,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:33,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011028162] [2020-04-18 15:47:33,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:33,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011028162] [2020-04-18 15:47:33,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:33,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:47:33,091 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:33,093 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:33,098 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 73 transitions. [2020-04-18 15:47:33,098 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:33,134 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:47:33,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:47:33,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:47:33,135 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 6 states. [2020-04-18 15:47:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:33,186 INFO L93 Difference]: Finished difference Result 146 states and 380 transitions. [2020-04-18 15:47:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 380 transitions. [2020-04-18 15:47:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:47:33,187 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:47:33,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:33,188 INFO L82 PathProgramCache]: Analyzing trace with hash 508962700, now seen corresponding path program 3 times [2020-04-18 15:47:33,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:33,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841687348] [2020-04-18 15:47:33,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:33,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841687348] [2020-04-18 15:47:33,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:33,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:47:33,236 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:33,238 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:33,242 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 49 transitions. [2020-04-18 15:47:33,243 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:33,268 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:47:33,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:47:33,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:47:33,269 INFO L87 Difference]: Start difference. First operand 146 states and 380 transitions. Second operand 5 states. [2020-04-18 15:47:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:33,299 INFO L93 Difference]: Finished difference Result 146 states and 380 transitions. [2020-04-18 15:47:33,300 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 380 transitions. [2020-04-18 15:47:33,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:47:33,301 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [242113289] [2020-04-18 15:47:33,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:47:33,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:47:33,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [242113289] [2020-04-18 15:47:33,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:47:33,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:47:33,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:47:33,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:47:33,303 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 8 states. [2020-04-18 15:47:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:33,384 INFO L93 Difference]: Finished difference Result 586 states and 1831 transitions. [2020-04-18 15:47:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 15:47:33,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-04-18 15:47:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:47:33,387 INFO L225 Difference]: With dead ends: 586 [2020-04-18 15:47:33,387 INFO L226 Difference]: Without dead ends: 262 [2020-04-18 15:47:33,387 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:47:33,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-04-18 15:47:33,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-04-18 15:47:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-04-18 15:47:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 768 transitions. [2020-04-18 15:47:33,397 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 768 transitions. Word has length 16 [2020-04-18 15:47:33,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:47:33,397 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 768 transitions. [2020-04-18 15:47:33,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:47:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 768 transitions. [2020-04-18 15:47:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:47:33,398 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:47:33,398 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:47:33,399 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:47:33,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:33,399 INFO L82 PathProgramCache]: Analyzing trace with hash 704255862, now seen corresponding path program 1 times [2020-04-18 15:47:33,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:47:33,399 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2015548013] [2020-04-18 15:47:33,400 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:33,406 INFO L259 McrAutomatonBuilder]: Finished intersection with 188 states and 546 transitions. [2020-04-18 15:47:33,407 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2020-04-18 15:47:33,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:47:33,408 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:47:33,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:33,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1364520762, now seen corresponding path program 2 times [2020-04-18 15:47:33,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:33,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852782708] [2020-04-18 15:47:33,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:33,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852782708] [2020-04-18 15:47:33,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:33,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:47:33,518 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:33,519 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:33,525 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 71 transitions. [2020-04-18 15:47:33,525 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:33,542 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:47:33,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:47:33,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:47:33,543 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 5 states. [2020-04-18 15:47:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:33,571 INFO L93 Difference]: Finished difference Result 224 states and 630 transitions. [2020-04-18 15:47:33,571 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 630 transitions. [2020-04-18 15:47:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:47:33,572 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:47:33,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:33,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1338463092, now seen corresponding path program 3 times [2020-04-18 15:47:33,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:33,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271834389] [2020-04-18 15:47:33,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:33,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271834389] [2020-04-18 15:47:33,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:33,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:47:33,656 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:33,657 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:33,667 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 172 transitions. [2020-04-18 15:47:33,667 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:33,703 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:47:33,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:47:33,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:47:33,704 INFO L87 Difference]: Start difference. First operand 224 states and 630 transitions. Second operand 6 states. [2020-04-18 15:47:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:33,739 INFO L93 Difference]: Finished difference Result 224 states and 630 transitions. [2020-04-18 15:47:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 630 transitions. [2020-04-18 15:47:33,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:47:33,741 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2015548013] [2020-04-18 15:47:33,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:47:33,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:47:33,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2015548013] [2020-04-18 15:47:33,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:47:33,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:47:33,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:47:33,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:47:33,742 INFO L87 Difference]: Start difference. First operand 262 states and 768 transitions. Second operand 8 states. [2020-04-18 15:47:33,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:33,861 INFO L93 Difference]: Finished difference Result 398 states and 1145 transitions. [2020-04-18 15:47:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 15:47:33,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-04-18 15:47:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:47:33,863 INFO L225 Difference]: With dead ends: 398 [2020-04-18 15:47:33,863 INFO L226 Difference]: Without dead ends: 154 [2020-04-18 15:47:33,863 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:47:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-04-18 15:47:33,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-04-18 15:47:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-18 15:47:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-04-18 15:47:33,869 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-04-18 15:47:33,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:47:33,870 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-04-18 15:47:33,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:47:33,870 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-04-18 15:47:33,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:47:33,871 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:47:33,871 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:47:33,871 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:47:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:33,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-04-18 15:47:33,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:47:33,872 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [533576739] [2020-04-18 15:47:33,873 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:33,878 INFO L259 McrAutomatonBuilder]: Finished intersection with 272 states and 842 transitions. [2020-04-18 15:47:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states. [2020-04-18 15:47:33,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:47:33,882 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:47:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:33,882 INFO L82 PathProgramCache]: Analyzing trace with hash -649530618, now seen corresponding path program 2 times [2020-04-18 15:47:33,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:33,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973480166] [2020-04-18 15:47:33,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:33,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973480166] [2020-04-18 15:47:33,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:33,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:47:33,939 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:33,941 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:33,949 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 79 transitions. [2020-04-18 15:47:33,949 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:33,969 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:47:33,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:47:33,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:47:33,970 INFO L87 Difference]: Start difference. First operand 272 states. Second operand 5 states. [2020-04-18 15:47:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:33,994 INFO L93 Difference]: Finished difference Result 344 states and 1046 transitions. [2020-04-18 15:47:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1046 transitions. [2020-04-18 15:47:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:47:33,996 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:47:33,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:33,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1457318388, now seen corresponding path program 3 times [2020-04-18 15:47:33,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:33,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894089315] [2020-04-18 15:47:33,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:34,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894089315] [2020-04-18 15:47:34,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:34,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:47:34,074 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:34,076 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:34,121 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 219 transitions. [2020-04-18 15:47:34,121 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:34,155 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 15:47:34,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:47:34,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:47:34,155 INFO L87 Difference]: Start difference. First operand 344 states and 1046 transitions. Second operand 6 states. [2020-04-18 15:47:34,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:34,227 INFO L93 Difference]: Finished difference Result 416 states and 1226 transitions. [2020-04-18 15:47:34,227 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1226 transitions. [2020-04-18 15:47:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:47:34,229 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:47:34,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:34,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1434321348, now seen corresponding path program 4 times [2020-04-18 15:47:34,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:34,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772923972] [2020-04-18 15:47:34,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:34,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772923972] [2020-04-18 15:47:34,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:34,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:47:34,316 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:34,318 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:34,329 INFO L259 McrAutomatonBuilder]: Finished intersection with 82 states and 167 transitions. [2020-04-18 15:47:34,329 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:34,443 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 15:47:34,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:47:34,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:47:34,444 INFO L87 Difference]: Start difference. First operand 416 states and 1226 transitions. Second operand 8 states. [2020-04-18 15:47:34,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:34,538 INFO L93 Difference]: Finished difference Result 528 states and 1478 transitions. [2020-04-18 15:47:34,538 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1478 transitions. [2020-04-18 15:47:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:47:34,541 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:47:34,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:34,541 INFO L82 PathProgramCache]: Analyzing trace with hash 681993904, now seen corresponding path program 5 times [2020-04-18 15:47:34,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:34,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776279355] [2020-04-18 15:47:34,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:34,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776279355] [2020-04-18 15:47:34,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:34,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:47:34,620 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:34,621 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:34,628 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 89 transitions. [2020-04-18 15:47:34,629 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:34,673 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:47:34,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:47:34,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2020-04-18 15:47:34,674 INFO L87 Difference]: Start difference. First operand 528 states and 1478 transitions. Second operand 5 states. [2020-04-18 15:47:34,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:34,738 INFO L93 Difference]: Finished difference Result 651 states and 1688 transitions. [2020-04-18 15:47:34,738 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1688 transitions. [2020-04-18 15:47:34,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 15:47:34,741 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:47:34,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:47:34,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 6 times [2020-04-18 15:47:34,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:47:34,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815753226] [2020-04-18 15:47:34,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:47:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:47:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:47:34,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815753226] [2020-04-18 15:47:34,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:47:34,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:47:34,789 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:47:34,791 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:47:34,796 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 40 transitions. [2020-04-18 15:47:34,797 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:47:34,888 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:47:34,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:47:34,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2020-04-18 15:47:34,889 INFO L87 Difference]: Start difference. First operand 651 states and 1688 transitions. Second operand 6 states. [2020-04-18 15:47:34,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:34,931 INFO L93 Difference]: Finished difference Result 651 states and 1688 transitions. [2020-04-18 15:47:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1688 transitions. [2020-04-18 15:47:34,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:47:34,933 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [533576739] [2020-04-18 15:47:34,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:47:34,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:47:34,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [533576739] [2020-04-18 15:47:34,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 15:47:34,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:47:34,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 15:47:34,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2020-04-18 15:47:34,935 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 18 states. [2020-04-18 15:47:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:47:35,307 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-04-18 15:47:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 15:47:35,308 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2020-04-18 15:47:35,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:47:35,309 INFO L225 Difference]: With dead ends: 130 [2020-04-18 15:47:35,309 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:47:35,310 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=309, Invalid=1331, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 15:47:35,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:47:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:47:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:47:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:47:35,311 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 15:47:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:47:35,311 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:47:35,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 15:47:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:47:35,312 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:47:35,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:47:35 BasicIcfg [2020-04-18 15:47:35,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:47:35,324 INFO L168 Benchmark]: Toolchain (without parser) took 7285.60 ms. Allocated memory was 143.7 MB in the beginning and 339.2 MB in the end (delta: 195.6 MB). Free memory was 99.9 MB in the beginning and 300.0 MB in the end (delta: -200.0 MB). Peak memory consumption was 177.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:47:35,325 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:47:35,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 770.37 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 98.0 MB in the beginning and 157.4 MB in the end (delta: -59.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:47:35,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.16 ms. Allocated memory is still 201.3 MB. Free memory was 157.4 MB in the beginning and 155.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:47:35,327 INFO L168 Benchmark]: Boogie Preprocessor took 26.81 ms. Allocated memory is still 201.3 MB. Free memory was 155.2 MB in the beginning and 153.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:47:35,328 INFO L168 Benchmark]: RCFGBuilder took 481.51 ms. Allocated memory is still 201.3 MB. Free memory was 153.2 MB in the beginning and 128.6 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:47:35,328 INFO L168 Benchmark]: TraceAbstraction took 5933.38 ms. Allocated memory was 201.3 MB in the beginning and 339.2 MB in the end (delta: 137.9 MB). Free memory was 128.6 MB in the beginning and 300.0 MB in the end (delta: -171.3 MB). Peak memory consumption was 148.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:47:35,332 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 770.37 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 98.0 MB in the beginning and 157.4 MB in the end (delta: -59.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.16 ms. Allocated memory is still 201.3 MB. Free memory was 157.4 MB in the beginning and 155.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.81 ms. Allocated memory is still 201.3 MB. Free memory was 155.2 MB in the beginning and 153.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.51 ms. Allocated memory is still 201.3 MB. Free memory was 153.2 MB in the beginning and 128.6 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5933.38 ms. Allocated memory was 201.3 MB in the beginning and 339.2 MB in the end (delta: 137.9 MB). Free memory was 128.6 MB in the beginning and 300.0 MB in the end (delta: -171.3 MB). Peak memory consumption was 148.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1043 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 223 SDtfs, 549 SDslu, 537 SDs, 0 SdLazy, 198 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...