/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/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:17:59,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:17:59,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:17:59,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:17:59,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:17:59,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:17:59,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:17:59,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:17:59,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:17:59,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:17:59,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:17:59,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:17:59,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:17:59,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:17:59,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:17:59,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:17:59,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:17:59,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:17:59,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:17:59,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:17:59,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:17:59,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:17:59,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:17:59,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:17:59,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:17:59,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:17:59,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:17:59,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:17:59,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:17:59,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:17:59,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:17:59,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:17:59,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:17:59,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:17:59,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:17:59,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:17:59,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:17:59,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:17:59,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:17:59,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:17:59,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:17:59,773 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 15:17:59,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:17:59,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:17:59,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:17:59,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:17:59,790 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:17:59,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:17:59,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:17:59,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:17:59,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:17:59,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:17:59,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:17:59,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:17:59,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:17:59,792 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:17:59,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:17:59,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:17:59,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:17:59,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:17:59,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:17:59,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:17:59,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:17:59,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:17:59,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:17:59,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:17:59,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:17:59,794 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:17:59,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:17:59,794 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:17:59,794 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:17:59,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:17:59,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:18:00,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:18:00,079 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:18:00,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:18:00,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:18:00,086 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:18:00,087 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-04-18 15:18:00,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63f54fa5f/bac824d7fba74bfa97675b24b84acd04/FLAG266477e2e [2020-04-18 15:18:00,674 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:18:00,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2020-04-18 15:18:00,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63f54fa5f/bac824d7fba74bfa97675b24b84acd04/FLAG266477e2e [2020-04-18 15:18:00,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63f54fa5f/bac824d7fba74bfa97675b24b84acd04 [2020-04-18 15:18:00,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:18:01,005 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:18:01,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:18:01,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:18:01,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:18:01,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:18:00" (1/1) ... [2020-04-18 15:18:01,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3459bafd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01, skipping insertion in model container [2020-04-18 15:18:01,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:18:00" (1/1) ... [2020-04-18 15:18:01,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:18:01,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:18:01,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:18:01,578 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:18:01,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:18:01,728 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:18:01,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01 WrapperNode [2020-04-18 15:18:01,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:18:01,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:18:01,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:18:01,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:18:01,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01" (1/1) ... [2020-04-18 15:18:01,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01" (1/1) ... [2020-04-18 15:18:01,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:18:01,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:18:01,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:18:01,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:18:01,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01" (1/1) ... [2020-04-18 15:18:01,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01" (1/1) ... [2020-04-18 15:18:01,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01" (1/1) ... [2020-04-18 15:18:01,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01" (1/1) ... [2020-04-18 15:18:01,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01" (1/1) ... [2020-04-18 15:18:01,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01" (1/1) ... [2020-04-18 15:18:01,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01" (1/1) ... [2020-04-18 15:18:01,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:18:01,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:18:01,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:18:01,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:18:01,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01" (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 15:18:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:18:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:18:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:18:01,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:18:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:18:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:18:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:18:01,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:18:01,881 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:18:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:18:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:18:01,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:18:01,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:18:01,883 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 15:18:02,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:18:02,279 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:18:02,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:18:02 BoogieIcfgContainer [2020-04-18 15:18:02,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:18:02,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:18:02,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:18:02,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:18:02,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:18:00" (1/3) ... [2020-04-18 15:18:02,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf96084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:18:02, skipping insertion in model container [2020-04-18 15:18:02,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01" (2/3) ... [2020-04-18 15:18:02,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf96084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:18:02, skipping insertion in model container [2020-04-18 15:18:02,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:18:02" (3/3) ... [2020-04-18 15:18:02,292 INFO L109 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2020-04-18 15:18:02,303 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:18:02,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:18:02,310 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:18:02,311 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:18:02,336 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,336 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,337 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,337 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,338 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,338 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,338 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,339 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,339 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,339 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,340 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,340 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,340 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,341 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,341 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,341 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,341 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,342 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,346 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,346 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,346 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,347 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,354 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,355 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,355 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,355 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,358 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,358 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,358 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,358 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:18:02,375 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:18:02,393 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:18:02,393 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:18:02,393 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:18:02,393 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:18:02,394 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:18:02,394 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:18:02,394 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:18:02,394 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:18:02,408 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 15:18:02,411 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:18:02,455 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:18:02,455 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:18:02,460 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:18:02,463 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:18:02,485 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:18:02,486 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:18:02,487 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:18:02,488 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 15:18:02,490 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:18:04,110 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1996 [2020-04-18 15:18:04,110 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 15:18:04,115 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 15:18:04,162 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 15:18:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 15:18:04,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:18:04,177 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:04,178 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:04,178 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:04,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:04,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1153400973, now seen corresponding path program 1 times [2020-04-18 15:18:04,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:04,192 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [925629438] [2020-04-18 15:18:04,211 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:04,226 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:18:04,228 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:18:04,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:18:04,231 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:04,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:04,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1153400973, now seen corresponding path program 2 times [2020-04-18 15:18:04,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:04,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207367735] [2020-04-18 15:18:04,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:04,580 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 15:18:04,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207367735] [2020-04-18 15:18:04,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:04,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:18:04,585 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:04,586 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:04,592 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:18:04,593 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:04,603 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:04,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:18:04,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:18:04,611 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:18:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:04,615 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:18:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:18:04,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:04,617 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [925629438] [2020-04-18 15:18:04,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:04,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:18:04,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [925629438] [2020-04-18 15:18:04,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:18:04,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:04,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:18:04,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:18:04,625 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 15:18:04,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:04,660 INFO L93 Difference]: Finished difference Result 214 states and 593 transitions. [2020-04-18 15:18:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:18:04,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:18:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:04,697 INFO L225 Difference]: With dead ends: 214 [2020-04-18 15:18:04,697 INFO L226 Difference]: Without dead ends: 166 [2020-04-18 15:18:04,701 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:18:04,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-18 15:18:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-18 15:18:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-18 15:18:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions. [2020-04-18 15:18:04,795 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8 [2020-04-18 15:18:04,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:04,797 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 441 transitions. [2020-04-18 15:18:04,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:18:04,797 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions. [2020-04-18 15:18:04,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:18:04,799 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:04,799 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:04,799 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:04,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:04,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1395710546, now seen corresponding path program 1 times [2020-04-18 15:18:04,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:04,800 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1170339152] [2020-04-18 15:18:04,801 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:04,801 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 15:18:04,802 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:18:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:18:04,802 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:04,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:04,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1395710546, now seen corresponding path program 2 times [2020-04-18 15:18:04,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:04,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85214656] [2020-04-18 15:18:04,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:04,919 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 15:18:04,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85214656] [2020-04-18 15:18:04,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:04,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:04,921 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:04,922 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:04,923 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:18:04,925 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:04,935 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:04,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:04,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:04,936 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 15:18:04,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:04,947 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 15:18:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 15:18:04,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:04,948 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1170339152] [2020-04-18 15:18:04,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:04,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:18:04,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1170339152] [2020-04-18 15:18:04,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:18:04,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:04,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:04,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:18:04,950 INFO L87 Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states. [2020-04-18 15:18:04,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:04,968 INFO L93 Difference]: Finished difference Result 202 states and 516 transitions. [2020-04-18 15:18:04,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:18:04,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:18:04,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:04,971 INFO L225 Difference]: With dead ends: 202 [2020-04-18 15:18:04,971 INFO L226 Difference]: Without dead ends: 130 [2020-04-18 15:18:04,972 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 15:18:04,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-04-18 15:18:04,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-04-18 15:18:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-04-18 15:18:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions. [2020-04-18 15:18:04,982 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9 [2020-04-18 15:18:04,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:04,982 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 322 transitions. [2020-04-18 15:18:04,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:18:04,983 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions. [2020-04-18 15:18:04,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:18:04,984 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:04,984 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:04,984 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:04,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:04,985 INFO L82 PathProgramCache]: Analyzing trace with hash -316797667, now seen corresponding path program 1 times [2020-04-18 15:18:04,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:04,985 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1534053855] [2020-04-18 15:18:04,986 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:04,986 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 15:18:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:18:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:18:04,987 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:04,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:04,988 INFO L82 PathProgramCache]: Analyzing trace with hash -317354737, now seen corresponding path program 2 times [2020-04-18 15:18:04,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:04,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854775536] [2020-04-18 15:18:04,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:05,045 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 15:18:05,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854775536] [2020-04-18 15:18:05,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:05,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:05,046 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:05,047 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:05,049 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:18:05,050 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:05,058 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:18:05,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:05,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:05,059 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-04-18 15:18:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:05,073 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2020-04-18 15:18:05,073 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-04-18 15:18:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:18:05,073 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:05,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:05,074 INFO L82 PathProgramCache]: Analyzing trace with hash -316797667, now seen corresponding path program 3 times [2020-04-18 15:18:05,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:05,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804359143] [2020-04-18 15:18:05,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:05,129 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 15:18:05,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804359143] [2020-04-18 15:18:05,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:05,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:18:05,131 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:05,133 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:05,135 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 15:18:05,135 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:05,141 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:05,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:18:05,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:18:05,142 INFO L87 Difference]: Start difference. First operand 23 states and 32 transitions. Second operand 3 states. [2020-04-18 15:18:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:05,143 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2020-04-18 15:18:05,143 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-04-18 15:18:05,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:05,144 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1534053855] [2020-04-18 15:18:05,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:05,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:18:05,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1534053855] [2020-04-18 15:18:05,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:18:05,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:05,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:18:05,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:18:05,148 INFO L87 Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 5 states. [2020-04-18 15:18:05,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:05,178 INFO L93 Difference]: Finished difference Result 124 states and 303 transitions. [2020-04-18 15:18:05,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:18:05,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 15:18:05,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:05,180 INFO L225 Difference]: With dead ends: 124 [2020-04-18 15:18:05,180 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 15:18:05,181 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:18:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 15:18:05,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 15:18:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 15:18:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-04-18 15:18:05,189 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 10 [2020-04-18 15:18:05,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:05,190 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-04-18 15:18:05,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:18:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-04-18 15:18:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:18:05,191 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:05,191 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:05,192 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:05,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1215717328, now seen corresponding path program 1 times [2020-04-18 15:18:05,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:05,192 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1465804794] [2020-04-18 15:18:05,193 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:05,194 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 76 transitions. [2020-04-18 15:18:05,194 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 15:18:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:18:05,195 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:05,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:05,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1215161218, now seen corresponding path program 2 times [2020-04-18 15:18:05,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:05,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927540517] [2020-04-18 15:18:05,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:05,227 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 15:18:05,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927540517] [2020-04-18 15:18:05,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:05,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:05,228 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:05,229 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:05,233 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 37 transitions. [2020-04-18 15:18:05,233 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:05,242 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:18:05,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:05,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:05,246 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-04-18 15:18:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:05,258 INFO L93 Difference]: Finished difference Result 44 states and 83 transitions. [2020-04-18 15:18:05,258 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 83 transitions. [2020-04-18 15:18:05,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:18:05,259 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:05,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1215717328, now seen corresponding path program 3 times [2020-04-18 15:18:05,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:05,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899639272] [2020-04-18 15:18:05,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:05,298 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 15:18:05,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899639272] [2020-04-18 15:18:05,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:05,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:05,300 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:05,301 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:05,304 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-04-18 15:18:05,306 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:05,316 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:05,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:05,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:18:05,317 INFO L87 Difference]: Start difference. First operand 44 states and 83 transitions. Second operand 4 states. [2020-04-18 15:18:05,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:05,331 INFO L93 Difference]: Finished difference Result 44 states and 83 transitions. [2020-04-18 15:18:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 83 transitions. [2020-04-18 15:18:05,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:05,335 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1465804794] [2020-04-18 15:18:05,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:05,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:18:05,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1465804794] [2020-04-18 15:18:05,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:18:05,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:05,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:18:05,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:18:05,337 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 6 states. [2020-04-18 15:18:05,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:05,388 INFO L93 Difference]: Finished difference Result 142 states and 336 transitions. [2020-04-18 15:18:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:18:05,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 15:18:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:05,391 INFO L225 Difference]: With dead ends: 142 [2020-04-18 15:18:05,391 INFO L226 Difference]: Without dead ends: 64 [2020-04-18 15:18:05,392 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:18:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-04-18 15:18:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-04-18 15:18:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-04-18 15:18:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 137 transitions. [2020-04-18 15:18:05,396 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 137 transitions. Word has length 11 [2020-04-18 15:18:05,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:05,396 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 137 transitions. [2020-04-18 15:18:05,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:18:05,397 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 137 transitions. [2020-04-18 15:18:05,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:18:05,397 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:05,397 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:05,398 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:05,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:05,398 INFO L82 PathProgramCache]: Analyzing trace with hash 500064419, now seen corresponding path program 1 times [2020-04-18 15:18:05,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:05,399 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1876850224] [2020-04-18 15:18:05,399 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:05,400 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 108 transitions. [2020-04-18 15:18:05,401 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-04-18 15:18:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:18:05,401 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:05,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:05,402 INFO L82 PathProgramCache]: Analyzing trace with hash -984768229, now seen corresponding path program 2 times [2020-04-18 15:18:05,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:05,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176836893] [2020-04-18 15:18:05,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:05,447 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 15:18:05,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176836893] [2020-04-18 15:18:05,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:05,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:05,449 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:05,450 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:05,453 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 50 transitions. [2020-04-18 15:18:05,453 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:05,471 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:18:05,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:05,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:05,472 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2020-04-18 15:18:05,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:05,494 INFO L93 Difference]: Finished difference Result 62 states and 128 transitions. [2020-04-18 15:18:05,494 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 128 transitions. [2020-04-18 15:18:05,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:18:05,495 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:05,495 INFO L82 PathProgramCache]: Analyzing trace with hash -967468339, now seen corresponding path program 3 times [2020-04-18 15:18:05,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:05,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273733474] [2020-04-18 15:18:05,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:05,523 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 15:18:05,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273733474] [2020-04-18 15:18:05,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:05,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:05,524 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:05,525 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:05,528 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 50 transitions. [2020-04-18 15:18:05,528 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:05,541 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:05,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:05,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:18:05,542 INFO L87 Difference]: Start difference. First operand 62 states and 128 transitions. Second operand 4 states. [2020-04-18 15:18:05,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:05,558 INFO L93 Difference]: Finished difference Result 71 states and 137 transitions. [2020-04-18 15:18:05,558 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 137 transitions. [2020-04-18 15:18:05,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:18:05,558 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:18:05,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:05,559 INFO L82 PathProgramCache]: Analyzing trace with hash 500064419, now seen corresponding path program 4 times [2020-04-18 15:18:05,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:05,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244121206] [2020-04-18 15:18:05,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:05,624 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 15:18:05,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244121206] [2020-04-18 15:18:05,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:05,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:05,625 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:05,628 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:05,631 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-04-18 15:18:05,631 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:05,652 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:18:05,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:05,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:18:05,654 INFO L87 Difference]: Start difference. First operand 71 states and 137 transitions. Second operand 4 states. [2020-04-18 15:18:05,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:05,666 INFO L93 Difference]: Finished difference Result 71 states and 137 transitions. [2020-04-18 15:18:05,666 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 137 transitions. [2020-04-18 15:18:05,667 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:05,668 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1876850224] [2020-04-18 15:18:05,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:05,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:18:05,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1876850224] [2020-04-18 15:18:05,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:18:05,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:05,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:18:05,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:18:05,670 INFO L87 Difference]: Start difference. First operand 64 states and 137 transitions. Second operand 8 states. [2020-04-18 15:18:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:05,927 INFO L93 Difference]: Finished difference Result 77 states and 150 transitions. [2020-04-18 15:18:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 15:18:05,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-04-18 15:18:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:05,933 INFO L225 Difference]: With dead ends: 77 [2020-04-18 15:18:05,933 INFO L226 Difference]: Without dead ends: 56 [2020-04-18 15:18:05,934 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-04-18 15:18:05,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-18 15:18:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-18 15:18:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-18 15:18:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 109 transitions. [2020-04-18 15:18:05,938 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 109 transitions. Word has length 12 [2020-04-18 15:18:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:05,939 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 109 transitions. [2020-04-18 15:18:05,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:18:05,939 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 109 transitions. [2020-04-18 15:18:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:18:05,940 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:05,940 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:05,940 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:05,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1337478729, now seen corresponding path program 1 times [2020-04-18 15:18:05,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:05,941 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [946576798] [2020-04-18 15:18:05,941 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:05,943 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 15:18:05,943 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 15:18:05,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:18:05,944 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:05,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:05,944 INFO L82 PathProgramCache]: Analyzing trace with hash -463043823, now seen corresponding path program 2 times [2020-04-18 15:18:05,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:05,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999616500] [2020-04-18 15:18:05,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:05,977 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 15:18:05,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999616500] [2020-04-18 15:18:05,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:05,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:05,978 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:05,979 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:05,982 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 60 transitions. [2020-04-18 15:18:05,983 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:05,993 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:18:05,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:05,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:05,995 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-04-18 15:18:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:06,011 INFO L93 Difference]: Finished difference Result 96 states and 221 transitions. [2020-04-18 15:18:06,011 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 221 transitions. [2020-04-18 15:18:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:18:06,012 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:06,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:06,012 INFO L82 PathProgramCache]: Analyzing trace with hash 73238367, now seen corresponding path program 3 times [2020-04-18 15:18:06,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:06,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95535447] [2020-04-18 15:18:06,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:06,069 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 15:18:06,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95535447] [2020-04-18 15:18:06,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:06,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:06,070 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:06,072 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:06,075 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 65 transitions. [2020-04-18 15:18:06,076 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:06,090 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:18:06,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:06,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:18:06,091 INFO L87 Difference]: Start difference. First operand 96 states and 221 transitions. Second operand 4 states. [2020-04-18 15:18:06,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:06,107 INFO L93 Difference]: Finished difference Result 111 states and 240 transitions. [2020-04-18 15:18:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 240 transitions. [2020-04-18 15:18:06,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:18:06,108 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:18:06,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:06,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1676497961, now seen corresponding path program 4 times [2020-04-18 15:18:06,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:06,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122857099] [2020-04-18 15:18:06,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:06,143 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 15:18:06,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122857099] [2020-04-18 15:18:06,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:06,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:06,144 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:06,145 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:06,148 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 15:18:06,148 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:06,166 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:18:06,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:06,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:18:06,167 INFO L87 Difference]: Start difference. First operand 111 states and 240 transitions. Second operand 4 states. [2020-04-18 15:18:06,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:06,183 INFO L93 Difference]: Finished difference Result 135 states and 274 transitions. [2020-04-18 15:18:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 274 transitions. [2020-04-18 15:18:06,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:18:06,184 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:18:06,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:06,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1337478729, now seen corresponding path program 5 times [2020-04-18 15:18:06,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:06,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761727879] [2020-04-18 15:18:06,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:06,266 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 15:18:06,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761727879] [2020-04-18 15:18:06,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:06,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:06,267 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:06,268 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:06,273 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 33 transitions. [2020-04-18 15:18:06,273 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:06,349 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:18:06,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:18:06,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:18:06,350 INFO L87 Difference]: Start difference. First operand 135 states and 274 transitions. Second operand 6 states. [2020-04-18 15:18:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:06,372 INFO L93 Difference]: Finished difference Result 135 states and 274 transitions. [2020-04-18 15:18:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 274 transitions. [2020-04-18 15:18:06,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:06,374 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [946576798] [2020-04-18 15:18:06,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:06,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:18:06,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [946576798] [2020-04-18 15:18:06,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:18:06,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:06,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:18:06,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:18:06,375 INFO L87 Difference]: Start difference. First operand 56 states and 109 transitions. Second operand 10 states. [2020-04-18 15:18:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:06,605 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2020-04-18 15:18:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 15:18:06,606 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-04-18 15:18:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:06,606 INFO L225 Difference]: With dead ends: 57 [2020-04-18 15:18:06,606 INFO L226 Difference]: Without dead ends: 42 [2020-04-18 15:18:06,608 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-04-18 15:18:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-04-18 15:18:06,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-04-18 15:18:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-04-18 15:18:06,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 69 transitions. [2020-04-18 15:18:06,611 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 69 transitions. Word has length 13 [2020-04-18 15:18:06,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:06,612 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 69 transitions. [2020-04-18 15:18:06,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:18:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 69 transitions. [2020-04-18 15:18:06,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:06,612 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:06,613 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:06,613 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:06,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:06,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1451530590, now seen corresponding path program 1 times [2020-04-18 15:18:06,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:06,614 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [24628763] [2020-04-18 15:18:06,615 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:06,616 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 220 transitions. [2020-04-18 15:18:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 15:18:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:06,620 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:06,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1469783626, now seen corresponding path program 2 times [2020-04-18 15:18:06,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:06,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549943031] [2020-04-18 15:18:06,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:06,653 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 15:18:06,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549943031] [2020-04-18 15:18:06,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:06,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:06,654 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:06,655 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:06,659 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 61 transitions. [2020-04-18 15:18:06,659 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:06,667 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:18:06,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:06,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:06,668 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2020-04-18 15:18:06,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:06,680 INFO L93 Difference]: Finished difference Result 126 states and 304 transitions. [2020-04-18 15:18:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 304 transitions. [2020-04-18 15:18:06,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:06,681 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:06,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:06,681 INFO L82 PathProgramCache]: Analyzing trace with hash -2024577710, now seen corresponding path program 3 times [2020-04-18 15:18:06,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:06,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886499792] [2020-04-18 15:18:06,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:06,712 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 15:18:06,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886499792] [2020-04-18 15:18:06,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:06,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:06,713 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:06,714 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:06,717 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 68 transitions. [2020-04-18 15:18:06,718 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:06,731 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:18:06,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:06,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:18:06,732 INFO L87 Difference]: Start difference. First operand 126 states and 304 transitions. Second operand 4 states. [2020-04-18 15:18:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:06,745 INFO L93 Difference]: Finished difference Result 156 states and 357 transitions. [2020-04-18 15:18:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 357 transitions. [2020-04-18 15:18:06,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:06,746 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:18:06,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:06,746 INFO L82 PathProgramCache]: Analyzing trace with hash -431805210, now seen corresponding path program 4 times [2020-04-18 15:18:06,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:06,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783426728] [2020-04-18 15:18:06,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:06,782 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 15:18:06,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783426728] [2020-04-18 15:18:06,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:06,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:18:06,784 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:06,785 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:06,792 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 15:18:06,792 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:06,816 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:18:06,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:06,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:18:06,817 INFO L87 Difference]: Start difference. First operand 156 states and 357 transitions. Second operand 4 states. [2020-04-18 15:18:06,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:06,840 INFO L93 Difference]: Finished difference Result 210 states and 446 transitions. [2020-04-18 15:18:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 446 transitions. [2020-04-18 15:18:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:06,842 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:18:06,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:06,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1487856390, now seen corresponding path program 5 times [2020-04-18 15:18:06,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:06,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039508657] [2020-04-18 15:18:06,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:06,910 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 15:18:06,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039508657] [2020-04-18 15:18:06,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:06,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:06,912 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:06,912 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:06,917 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 15:18:06,917 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:06,964 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:18:06,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:18:06,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:18:06,965 INFO L87 Difference]: Start difference. First operand 210 states and 446 transitions. Second operand 6 states. [2020-04-18 15:18:07,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:07,010 INFO L93 Difference]: Finished difference Result 222 states and 456 transitions. [2020-04-18 15:18:07,010 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 456 transitions. [2020-04-18 15:18:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:18:07,011 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:18:07,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:07,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1451530590, now seen corresponding path program 6 times [2020-04-18 15:18:07,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:07,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680393522] [2020-04-18 15:18:07,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:07,050 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 15:18:07,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680393522] [2020-04-18 15:18:07,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:07,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:18:07,052 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:07,053 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:07,055 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-04-18 15:18:07,055 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:07,091 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:18:07,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:18:07,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:18:07,092 INFO L87 Difference]: Start difference. First operand 222 states and 456 transitions. Second operand 7 states. [2020-04-18 15:18:07,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:07,135 INFO L93 Difference]: Finished difference Result 222 states and 456 transitions. [2020-04-18 15:18:07,135 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 456 transitions. [2020-04-18 15:18:07,136 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:07,137 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [24628763] [2020-04-18 15:18:07,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:07,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:18:07,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [24628763] [2020-04-18 15:18:07,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:18:07,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:07,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:18:07,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:18:07,138 INFO L87 Difference]: Start difference. First operand 42 states and 69 transitions. Second operand 11 states. [2020-04-18 15:18:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:07,316 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 15:18:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 15:18:07,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-04-18 15:18:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:07,317 INFO L225 Difference]: With dead ends: 39 [2020-04-18 15:18:07,317 INFO L226 Difference]: Without dead ends: 33 [2020-04-18 15:18:07,318 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-04-18 15:18:07,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-04-18 15:18:07,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-04-18 15:18:07,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-04-18 15:18:07,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-04-18 15:18:07,320 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-04-18 15:18:07,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:07,320 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-04-18 15:18:07,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:18:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-04-18 15:18:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:07,321 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:18:07,321 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:18:07,321 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:18:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:07,321 INFO L82 PathProgramCache]: Analyzing trace with hash -958438309, now seen corresponding path program 1 times [2020-04-18 15:18:07,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:18:07,322 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1109438581] [2020-04-18 15:18:07,322 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:07,326 INFO L259 McrAutomatonBuilder]: Finished intersection with 178 states and 482 transitions. [2020-04-18 15:18:07,327 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-04-18 15:18:07,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:07,328 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:18:07,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:07,329 INFO L82 PathProgramCache]: Analyzing trace with hash 96402109, now seen corresponding path program 2 times [2020-04-18 15:18:07,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:07,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408256977] [2020-04-18 15:18:07,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:07,358 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 15:18:07,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408256977] [2020-04-18 15:18:07,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:07,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:07,359 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:07,361 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:07,367 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 87 transitions. [2020-04-18 15:18:07,367 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:07,387 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:18:07,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:07,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:18:07,387 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 4 states. [2020-04-18 15:18:07,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:07,407 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-04-18 15:18:07,407 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 668 transitions. [2020-04-18 15:18:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:07,408 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:18:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:07,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1656015001, now seen corresponding path program 3 times [2020-04-18 15:18:07,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:07,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966872922] [2020-04-18 15:18:07,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:07,468 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 15:18:07,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966872922] [2020-04-18 15:18:07,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:07,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:07,469 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:07,470 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:07,475 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 70 transitions. [2020-04-18 15:18:07,475 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:07,488 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:18:07,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:07,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:18:07,489 INFO L87 Difference]: Start difference. First operand 250 states and 668 transitions. Second operand 4 states. [2020-04-18 15:18:07,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:07,503 INFO L93 Difference]: Finished difference Result 340 states and 887 transitions. [2020-04-18 15:18:07,504 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 887 transitions. [2020-04-18 15:18:07,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:07,505 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:18:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:07,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1646955883, now seen corresponding path program 4 times [2020-04-18 15:18:07,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:07,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015470764] [2020-04-18 15:18:07,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:18:07,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015470764] [2020-04-18 15:18:07,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:07,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:18:07,571 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:07,573 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:07,577 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 48 transitions. [2020-04-18 15:18:07,577 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:07,634 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 15:18:07,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:18:07,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:18:07,635 INFO L87 Difference]: Start difference. First operand 340 states and 887 transitions. Second operand 5 states. [2020-04-18 15:18:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:07,676 INFO L93 Difference]: Finished difference Result 500 states and 1227 transitions. [2020-04-18 15:18:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1227 transitions. [2020-04-18 15:18:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:07,679 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:18:07,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:07,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1647025633, now seen corresponding path program 5 times [2020-04-18 15:18:07,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:07,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011010563] [2020-04-18 15:18:07,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:07,757 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 15:18:07,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011010563] [2020-04-18 15:18:07,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:07,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:18:07,759 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:07,761 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:07,765 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 44 transitions. [2020-04-18 15:18:07,765 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:07,794 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:18:07,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:18:07,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:18:07,795 INFO L87 Difference]: Start difference. First operand 500 states and 1227 transitions. Second operand 4 states. [2020-04-18 15:18:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:07,832 INFO L93 Difference]: Finished difference Result 734 states and 1676 transitions. [2020-04-18 15:18:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1676 transitions. [2020-04-18 15:18:07,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:07,836 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:18:07,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:07,836 INFO L82 PathProgramCache]: Analyzing trace with hash -394114047, now seen corresponding path program 6 times [2020-04-18 15:18:07,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:07,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006417118] [2020-04-18 15:18:07,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:07,874 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 15:18:07,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006417118] [2020-04-18 15:18:07,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:07,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:18:07,875 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:07,876 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:07,879 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 42 transitions. [2020-04-18 15:18:07,880 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:07,919 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:18:07,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:18:07,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:18:07,920 INFO L87 Difference]: Start difference. First operand 734 states and 1676 transitions. Second operand 6 states. [2020-04-18 15:18:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:07,994 INFO L93 Difference]: Finished difference Result 826 states and 1792 transitions. [2020-04-18 15:18:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1792 transitions. [2020-04-18 15:18:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:18:07,997 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:18:07,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:18:07,997 INFO L82 PathProgramCache]: Analyzing trace with hash -943469479, now seen corresponding path program 7 times [2020-04-18 15:18:07,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:18:07,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262840845] [2020-04-18 15:18:07,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:18:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:18:08,038 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 15:18:08,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262840845] [2020-04-18 15:18:08,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:18:08,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:18:08,039 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:18:08,040 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:18:08,043 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 15:18:08,043 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:18:08,085 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:18:08,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:18:08,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:18:08,086 INFO L87 Difference]: Start difference. First operand 826 states and 1792 transitions. Second operand 7 states. [2020-04-18 15:18:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:08,194 INFO L93 Difference]: Finished difference Result 840 states and 1799 transitions. [2020-04-18 15:18:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1799 transitions. [2020-04-18 15:18:08,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:08,196 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1109438581] [2020-04-18 15:18:08,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:18:08,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:18:08,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1109438581] [2020-04-18 15:18:08,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 15:18:08,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:18:08,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:18:08,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:18:08,198 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 14 states. [2020-04-18 15:18:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:18:08,501 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-04-18 15:18:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:18:08,502 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-04-18 15:18:08,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:18:08,502 INFO L225 Difference]: With dead ends: 32 [2020-04-18 15:18:08,502 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:18:08,503 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 15:18:08,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:18:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:18:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:18:08,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:18:08,504 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 15:18:08,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:18:08,504 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:18:08,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 15:18:08,504 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:18:08,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:18:08,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:18:08 BasicIcfg [2020-04-18 15:18:08,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:18:08,510 INFO L168 Benchmark]: Toolchain (without parser) took 7520.81 ms. Allocated memory was 137.4 MB in the beginning and 288.4 MB in the end (delta: 151.0 MB). Free memory was 100.6 MB in the beginning and 94.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 157.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:18:08,511 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:18:08,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.39 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 98.7 MB in the beginning and 158.4 MB in the end (delta: -59.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:18:08,513 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.50 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 156.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:18:08,519 INFO L168 Benchmark]: Boogie Preprocessor took 24.98 ms. Allocated memory is still 201.9 MB. Free memory was 156.3 MB in the beginning and 154.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:18:08,522 INFO L168 Benchmark]: RCFGBuilder took 466.99 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 132.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:18:08,522 INFO L168 Benchmark]: TraceAbstraction took 6223.46 ms. Allocated memory was 201.9 MB in the beginning and 288.4 MB in the end (delta: 86.5 MB). Free memory was 132.6 MB in the beginning and 94.6 MB in the end (delta: 38.0 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. [2020-04-18 15:18:08,526 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 723.39 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 98.7 MB in the beginning and 158.4 MB in the end (delta: -59.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.50 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 156.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.98 ms. Allocated memory is still 201.9 MB. Free memory was 156.3 MB in the beginning and 154.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.99 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 132.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6223.46 ms. Allocated memory was 201.9 MB in the beginning and 288.4 MB in the end (delta: 86.5 MB). Free memory was 132.6 MB in the beginning and 94.6 MB in the end (delta: 38.0 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 30 ProgramPointsAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 610 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1996 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 118 SDtfs, 257 SDslu, 256 SDs, 0 SdLazy, 324 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 431 GetRequests, 312 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 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...