/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/safe009_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:05:24,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:05:24,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:05:24,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:05:24,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:05:24,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:05:24,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:05:24,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:05:24,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:05:24,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:05:24,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:05:24,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:05:24,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:05:24,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:05:24,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:05:24,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:05:24,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:05:24,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:05:24,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:05:24,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:05:24,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:05:24,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:05:24,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:05:24,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:05:24,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:05:24,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:05:24,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:05:24,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:05:24,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:05:24,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:05:24,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:05:24,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:05:24,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:05:24,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:05:24,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:05:24,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:05:24,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:05:24,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:05:24,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:05:24,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:05:24,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:05:24,433 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 15:05:24,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:05:24,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:05:24,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:05:24,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:05:24,449 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:05:24,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:05:24,449 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:05:24,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:05:24,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:05:24,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:05:24,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:05:24,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:05:24,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:05:24,451 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:05:24,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:05:24,451 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:05:24,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:05:24,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:05:24,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:05:24,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:05:24,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:05:24,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:05:24,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:05:24,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:05:24,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:05:24,453 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:05:24,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:05:24,453 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:05:24,453 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:05:24,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:05:24,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:05:24,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:05:24,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:05:24,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:05:24,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:05:24,759 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:05:24,760 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-04-18 15:05:24,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82e087438/83f2c0d6e73943099b6185375a3a2593/FLAG752cd27db [2020-04-18 15:05:25,356 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:05:25,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-04-18 15:05:25,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82e087438/83f2c0d6e73943099b6185375a3a2593/FLAG752cd27db [2020-04-18 15:05:25,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82e087438/83f2c0d6e73943099b6185375a3a2593 [2020-04-18 15:05:25,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:05:25,725 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:05:25,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:05:25,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:05:25,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:05:25,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:05:25" (1/1) ... [2020-04-18 15:05:25,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:25, skipping insertion in model container [2020-04-18 15:05:25,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:05:25" (1/1) ... [2020-04-18 15:05:25,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:05:25,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:05:26,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:05:26,216 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:05:26,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:05:26,373 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:05:26,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26 WrapperNode [2020-04-18 15:05:26,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:05:26,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:05:26,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:05:26,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:05:26,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26" (1/1) ... [2020-04-18 15:05:26,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26" (1/1) ... [2020-04-18 15:05:26,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:05:26,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:05:26,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:05:26,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:05:26,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26" (1/1) ... [2020-04-18 15:05:26,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26" (1/1) ... [2020-04-18 15:05:26,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26" (1/1) ... [2020-04-18 15:05:26,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26" (1/1) ... [2020-04-18 15:05:26,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26" (1/1) ... [2020-04-18 15:05:26,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26" (1/1) ... [2020-04-18 15:05:26,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26" (1/1) ... [2020-04-18 15:05:26,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:05:26,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:05:26,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:05:26,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:05:26,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26" (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 15:05:26,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:05:26,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:05:26,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:05:26,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:05:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:05:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:05:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:05:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:05:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:05:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:05:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:05:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:05:26,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:05:26,540 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 15:05:26,951 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:05:26,951 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:05:26,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:05:26 BoogieIcfgContainer [2020-04-18 15:05:26,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:05:26,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:05:26,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:05:26,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:05:26,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:05:25" (1/3) ... [2020-04-18 15:05:26,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d0895f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:05:26, skipping insertion in model container [2020-04-18 15:05:26,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:05:26" (2/3) ... [2020-04-18 15:05:26,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d0895f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:05:26, skipping insertion in model container [2020-04-18 15:05:26,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:05:26" (3/3) ... [2020-04-18 15:05:26,964 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2020-04-18 15:05:26,974 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:05:26,974 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:05:26,981 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:05:26,982 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:05:27,004 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,005 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,005 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,005 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,006 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,006 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,007 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,007 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,007 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,007 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,008 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,008 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,009 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,009 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,009 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,009 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,010 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,010 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,015 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,015 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,015 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,016 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,022 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,022 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,023 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,023 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,025 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,025 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,026 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,026 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:05:27,041 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:05:27,061 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:05:27,062 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:05:27,062 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:05:27,062 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:05:27,062 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:05:27,062 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:05:27,063 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:05:27,063 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:05:27,078 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 15:05:27,080 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 15:05:27,122 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 15:05:27,123 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:05:27,127 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:05:27,130 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 15:05:27,149 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 15:05:27,149 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:05:27,150 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:05:27,152 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-04-18 15:05:27,153 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:05:28,585 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-04-18 15:05:28,632 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-04-18 15:05:28,632 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-04-18 15:05:28,638 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 15:05:28,668 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-04-18 15:05:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:05:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:05:28,682 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:05:28,683 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:05:28,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:05:28,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:28,693 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-04-18 15:05:28,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:05:28,704 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [699981733] [2020-04-18 15:05:28,726 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:28,746 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:05:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:05:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:05:28,749 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:05:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:28,750 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 2 times [2020-04-18 15:05:28,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:28,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851225223] [2020-04-18 15:05:28,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:29,012 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 15:05:29,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851225223] [2020-04-18 15:05:29,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:29,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:05:29,015 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:29,016 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:29,019 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:05:29,019 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:29,026 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:05:29,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:05:29,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:05:29,032 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:05:29,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:29,036 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:05:29,036 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:05:29,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:05:29,037 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [699981733] [2020-04-18 15:05:29,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:05:29,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:05:29,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [699981733] [2020-04-18 15:05:29,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:05:29,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:05:29,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:05:29,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:05:29,044 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:05:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:29,070 INFO L93 Difference]: Finished difference Result 222 states and 615 transitions. [2020-04-18 15:05:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:05:29,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:05:29,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:05:29,085 INFO L225 Difference]: With dead ends: 222 [2020-04-18 15:05:29,085 INFO L226 Difference]: Without dead ends: 174 [2020-04-18 15:05:29,087 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 15:05:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-04-18 15:05:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-04-18 15:05:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-04-18 15:05:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 463 transitions. [2020-04-18 15:05:29,159 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 463 transitions. Word has length 8 [2020-04-18 15:05:29,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:05:29,160 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 463 transitions. [2020-04-18 15:05:29,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:05:29,160 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 463 transitions. [2020-04-18 15:05:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:05:29,162 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:05:29,162 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:05:29,162 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:05:29,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:29,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119381, now seen corresponding path program 1 times [2020-04-18 15:05:29,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:05:29,163 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [247378243] [2020-04-18 15:05:29,164 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:29,164 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 17 transitions. [2020-04-18 15:05:29,165 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 15:05:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:05:29,165 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:05:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:29,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1586118481, now seen corresponding path program 2 times [2020-04-18 15:05:29,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:29,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988672406] [2020-04-18 15:05:29,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:29,247 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 15:05:29,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988672406] [2020-04-18 15:05:29,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:29,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:29,249 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:29,250 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:29,252 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:05:29,256 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:29,260 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:05:29,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:05:29,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:05:29,261 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-04-18 15:05:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:29,270 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 15:05:29,271 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 15:05:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:05:29,271 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:05:29,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:29,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119381, now seen corresponding path program 3 times [2020-04-18 15:05:29,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:29,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054359907] [2020-04-18 15:05:29,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:29,327 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 15:05:29,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054359907] [2020-04-18 15:05:29,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:29,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:29,328 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:29,329 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:29,331 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 15:05:29,331 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:29,382 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:05:29,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:05:29,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:05:29,382 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2020-04-18 15:05:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:29,400 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 15:05:29,400 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-04-18 15:05:29,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:05:29,401 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [247378243] [2020-04-18 15:05:29,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:05:29,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:05:29,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [247378243] [2020-04-18 15:05:29,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:05:29,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:05:29,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:05:29,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:05:29,404 INFO L87 Difference]: Start difference. First operand 174 states and 463 transitions. Second operand 6 states. [2020-04-18 15:05:29,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:29,433 INFO L93 Difference]: Finished difference Result 204 states and 513 transitions. [2020-04-18 15:05:29,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:05:29,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-04-18 15:05:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:05:29,436 INFO L225 Difference]: With dead ends: 204 [2020-04-18 15:05:29,437 INFO L226 Difference]: Without dead ends: 108 [2020-04-18 15:05:29,438 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:05:29,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-04-18 15:05:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-04-18 15:05:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-04-18 15:05:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 253 transitions. [2020-04-18 15:05:29,448 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 253 transitions. Word has length 9 [2020-04-18 15:05:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:05:29,448 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 253 transitions. [2020-04-18 15:05:29,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:05:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 253 transitions. [2020-04-18 15:05:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:05:29,449 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:05:29,449 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:05:29,450 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:05:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:29,450 INFO L82 PathProgramCache]: Analyzing trace with hash 409264718, now seen corresponding path program 1 times [2020-04-18 15:05:29,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:05:29,450 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [827328060] [2020-04-18 15:05:29,451 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:29,452 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 71 transitions. [2020-04-18 15:05:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 15:05:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:05:29,453 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:05:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:29,454 INFO L82 PathProgramCache]: Analyzing trace with hash 409265618, now seen corresponding path program 2 times [2020-04-18 15:05:29,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:29,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663076823] [2020-04-18 15:05:29,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:29,498 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 15:05:29,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663076823] [2020-04-18 15:05:29,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:29,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:29,499 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:29,500 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:29,503 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-04-18 15:05:29,503 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:29,510 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:05:29,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:05:29,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:05:29,514 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-04-18 15:05:29,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:29,517 INFO L93 Difference]: Finished difference Result 41 states and 73 transitions. [2020-04-18 15:05:29,517 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 73 transitions. [2020-04-18 15:05:29,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:05:29,518 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:05:29,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:29,519 INFO L82 PathProgramCache]: Analyzing trace with hash 409264718, now seen corresponding path program 3 times [2020-04-18 15:05:29,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:29,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282004693] [2020-04-18 15:05:29,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:29,573 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 15:05:29,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282004693] [2020-04-18 15:05:29,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:29,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:29,574 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:29,575 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:29,577 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-04-18 15:05:29,578 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:29,595 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:05:29,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:05:29,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:05:29,596 INFO L87 Difference]: Start difference. First operand 41 states and 73 transitions. Second operand 4 states. [2020-04-18 15:05:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:29,604 INFO L93 Difference]: Finished difference Result 41 states and 73 transitions. [2020-04-18 15:05:29,604 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 73 transitions. [2020-04-18 15:05:29,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:05:29,606 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [827328060] [2020-04-18 15:05:29,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:05:29,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:05:29,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [827328060] [2020-04-18 15:05:29,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:05:29,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:05:29,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:05:29,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:05:29,607 INFO L87 Difference]: Start difference. First operand 108 states and 253 transitions. Second operand 5 states. [2020-04-18 15:05:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:29,662 INFO L93 Difference]: Finished difference Result 138 states and 314 transitions. [2020-04-18 15:05:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:05:29,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 15:05:29,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:05:29,664 INFO L225 Difference]: With dead ends: 138 [2020-04-18 15:05:29,664 INFO L226 Difference]: Without dead ends: 60 [2020-04-18 15:05:29,665 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:05:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-04-18 15:05:29,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-04-18 15:05:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-04-18 15:05:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-04-18 15:05:29,673 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-04-18 15:05:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:05:29,673 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-04-18 15:05:29,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:05:29,673 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-04-18 15:05:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:05:29,675 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:05:29,675 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:05:29,675 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:05:29,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:29,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-04-18 15:05:29,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:05:29,676 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1256293136] [2020-04-18 15:05:29,677 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:29,678 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 122 transitions. [2020-04-18 15:05:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-04-18 15:05:29,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:05:29,685 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:05:29,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:29,686 INFO L82 PathProgramCache]: Analyzing trace with hash -197698324, now seen corresponding path program 2 times [2020-04-18 15:05:29,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:29,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423655046] [2020-04-18 15:05:29,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:29,761 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 15:05:29,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423655046] [2020-04-18 15:05:29,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:29,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:29,762 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:29,764 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:29,768 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-04-18 15:05:29,768 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:29,778 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:05:29,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:05:29,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:05:29,779 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-04-18 15:05:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:29,784 INFO L93 Difference]: Finished difference Result 62 states and 129 transitions. [2020-04-18 15:05:29,784 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 129 transitions. [2020-04-18 15:05:29,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:05:29,785 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:05:29,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:29,785 INFO L82 PathProgramCache]: Analyzing trace with hash -197699224, now seen corresponding path program 3 times [2020-04-18 15:05:29,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:29,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640305626] [2020-04-18 15:05:29,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:29,860 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 15:05:29,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640305626] [2020-04-18 15:05:29,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:29,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:29,863 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:29,864 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:29,869 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 50 transitions. [2020-04-18 15:05:29,870 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:29,885 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:05:29,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:05:29,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:05:29,886 INFO L87 Difference]: Start difference. First operand 62 states and 129 transitions. Second operand 4 states. [2020-04-18 15:05:29,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:29,900 INFO L93 Difference]: Finished difference Result 76 states and 150 transitions. [2020-04-18 15:05:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 150 transitions. [2020-04-18 15:05:29,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:05:29,901 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:05:29,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:29,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 4 times [2020-04-18 15:05:29,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:29,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81252926] [2020-04-18 15:05:29,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:30,009 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 15:05:30,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81252926] [2020-04-18 15:05:30,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:30,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:30,011 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:30,012 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:30,018 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-04-18 15:05:30,019 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:30,069 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:05:30,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:05:30,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:05:30,070 INFO L87 Difference]: Start difference. First operand 76 states and 150 transitions. Second operand 4 states. [2020-04-18 15:05:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:30,084 INFO L93 Difference]: Finished difference Result 76 states and 150 transitions. [2020-04-18 15:05:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 150 transitions. [2020-04-18 15:05:30,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:05:30,087 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1256293136] [2020-04-18 15:05:30,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:05:30,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:05:30,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1256293136] [2020-04-18 15:05:30,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:05:30,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:05:30,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:05:30,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:05:30,089 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 7 states. [2020-04-18 15:05:30,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:30,258 INFO L93 Difference]: Finished difference Result 73 states and 142 transitions. [2020-04-18 15:05:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 15:05:30,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 15:05:30,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:05:30,260 INFO L225 Difference]: With dead ends: 73 [2020-04-18 15:05:30,260 INFO L226 Difference]: Without dead ends: 52 [2020-04-18 15:05:30,260 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:05:30,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-18 15:05:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-18 15:05:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-18 15:05:30,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2020-04-18 15:05:30,265 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 12 [2020-04-18 15:05:30,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:05:30,265 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2020-04-18 15:05:30,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:05:30,265 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2020-04-18 15:05:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:05:30,266 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:05:30,266 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:05:30,266 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:05:30,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:30,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 1 times [2020-04-18 15:05:30,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:05:30,267 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1328806685] [2020-04-18 15:05:30,267 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:30,269 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 173 transitions. [2020-04-18 15:05:30,269 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 15:05:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:05:30,270 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:05:30,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:30,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1833698849, now seen corresponding path program 2 times [2020-04-18 15:05:30,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:30,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188539353] [2020-04-18 15:05:30,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:30,296 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 15:05:30,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188539353] [2020-04-18 15:05:30,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:30,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:30,297 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:30,298 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:30,301 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 51 transitions. [2020-04-18 15:05:30,301 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:30,306 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:05:30,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:05:30,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:05:30,307 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 15:05:30,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:30,310 INFO L93 Difference]: Finished difference Result 83 states and 185 transitions. [2020-04-18 15:05:30,310 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 185 transitions. [2020-04-18 15:05:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:05:30,311 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:05:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:30,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1833699749, now seen corresponding path program 3 times [2020-04-18 15:05:30,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:30,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376935657] [2020-04-18 15:05:30,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:30,338 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 15:05:30,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376935657] [2020-04-18 15:05:30,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:30,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:30,339 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:30,340 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:30,344 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 57 transitions. [2020-04-18 15:05:30,344 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:30,354 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:05:30,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:05:30,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:05:30,355 INFO L87 Difference]: Start difference. First operand 83 states and 185 transitions. Second operand 4 states. [2020-04-18 15:05:30,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:30,369 INFO L93 Difference]: Finished difference Result 111 states and 241 transitions. [2020-04-18 15:05:30,369 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 241 transitions. [2020-04-18 15:05:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:05:30,370 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:05:30,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:30,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1100968411, now seen corresponding path program 4 times [2020-04-18 15:05:30,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:30,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030368088] [2020-04-18 15:05:30,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:30,411 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 15:05:30,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030368088] [2020-04-18 15:05:30,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:30,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:30,412 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:30,413 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:30,415 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 15:05:30,415 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:30,434 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:05:30,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:05:30,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:05:30,434 INFO L87 Difference]: Start difference. First operand 111 states and 241 transitions. Second operand 4 states. [2020-04-18 15:05:30,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:30,450 INFO L93 Difference]: Finished difference Result 136 states and 276 transitions. [2020-04-18 15:05:30,450 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 276 transitions. [2020-04-18 15:05:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:05:30,451 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:05:30,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:30,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 5 times [2020-04-18 15:05:30,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:30,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823053442] [2020-04-18 15:05:30,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:30,499 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 15:05:30,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823053442] [2020-04-18 15:05:30,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:30,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:05:30,500 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:30,501 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:30,503 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 15:05:30,503 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:30,521 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:05:30,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:05:30,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:05:30,522 INFO L87 Difference]: Start difference. First operand 136 states and 276 transitions. Second operand 5 states. [2020-04-18 15:05:30,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:30,545 INFO L93 Difference]: Finished difference Result 136 states and 276 transitions. [2020-04-18 15:05:30,545 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 276 transitions. [2020-04-18 15:05:30,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:05:30,546 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1328806685] [2020-04-18 15:05:30,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:05:30,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:05:30,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1328806685] [2020-04-18 15:05:30,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:05:30,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:05:30,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:05:30,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:05:30,547 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand 8 states. [2020-04-18 15:05:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:30,681 INFO L93 Difference]: Finished difference Result 53 states and 91 transitions. [2020-04-18 15:05:30,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 15:05:30,681 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 15:05:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:05:30,682 INFO L225 Difference]: With dead ends: 53 [2020-04-18 15:05:30,682 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 15:05:30,683 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:05:30,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 15:05:30,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 15:05:30,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 15:05:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-04-18 15:05:30,686 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 13 [2020-04-18 15:05:30,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:05:30,686 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-04-18 15:05:30,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:05:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-04-18 15:05:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:05:30,687 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:05:30,687 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:05:30,687 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:05:30,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:30,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-04-18 15:05:30,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:05:30,688 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1672836973] [2020-04-18 15:05:30,689 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:30,690 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 238 transitions. [2020-04-18 15:05:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-04-18 15:05:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:05:30,692 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:05:30,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:30,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1010088817, now seen corresponding path program 2 times [2020-04-18 15:05:30,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:30,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117084212] [2020-04-18 15:05:30,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:30,725 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 15:05:30,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117084212] [2020-04-18 15:05:30,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:30,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:30,726 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:30,727 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:30,731 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-04-18 15:05:30,731 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:30,735 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:05:30,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:05:30,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:05:30,737 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-04-18 15:05:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:30,740 INFO L93 Difference]: Finished difference Result 110 states and 255 transitions. [2020-04-18 15:05:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-04-18 15:05:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:05:30,741 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:05:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:30,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1010103667, now seen corresponding path program 3 times [2020-04-18 15:05:30,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:30,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882232976] [2020-04-18 15:05:30,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:30,769 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 15:05:30,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882232976] [2020-04-18 15:05:30,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:30,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:30,770 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:30,772 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:30,776 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-04-18 15:05:30,776 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:30,786 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:05:30,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:05:30,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:05:30,787 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-04-18 15:05:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:30,800 INFO L93 Difference]: Finished difference Result 152 states and 346 transitions. [2020-04-18 15:05:30,800 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 346 transitions. [2020-04-18 15:05:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:05:30,801 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:05:30,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:30,802 INFO L82 PathProgramCache]: Analyzing trace with hash -229703923, now seen corresponding path program 4 times [2020-04-18 15:05:30,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:30,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568044074] [2020-04-18 15:05:30,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:30,868 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 15:05:30,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568044074] [2020-04-18 15:05:30,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:30,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:30,869 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:30,870 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:30,873 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 15:05:30,873 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:30,891 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:05:30,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:05:30,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:05:30,892 INFO L87 Difference]: Start difference. First operand 152 states and 346 transitions. Second operand 4 states. [2020-04-18 15:05:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:30,917 INFO L93 Difference]: Finished difference Result 202 states and 426 transitions. [2020-04-18 15:05:30,917 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 426 transitions. [2020-04-18 15:05:30,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:05:30,918 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:05:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:30,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1757560941, now seen corresponding path program 5 times [2020-04-18 15:05:30,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:30,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986858397] [2020-04-18 15:05:30,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:30,962 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 15:05:30,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986858397] [2020-04-18 15:05:30,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:30,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:05:30,963 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:30,964 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:30,967 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 15:05:30,967 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:30,990 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:05:30,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:05:30,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:05:30,991 INFO L87 Difference]: Start difference. First operand 202 states and 426 transitions. Second operand 5 states. [2020-04-18 15:05:31,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:31,032 INFO L93 Difference]: Finished difference Result 212 states and 434 transitions. [2020-04-18 15:05:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 434 transitions. [2020-04-18 15:05:31,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:05:31,034 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:05:31,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:31,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 6 times [2020-04-18 15:05:31,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:31,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084975331] [2020-04-18 15:05:31,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:31,141 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 15:05:31,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084975331] [2020-04-18 15:05:31,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:31,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:05:31,143 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:31,145 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:31,148 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-04-18 15:05:31,148 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:31,164 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:05:31,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:05:31,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:05:31,167 INFO L87 Difference]: Start difference. First operand 212 states and 434 transitions. Second operand 6 states. [2020-04-18 15:05:31,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:31,215 INFO L93 Difference]: Finished difference Result 212 states and 434 transitions. [2020-04-18 15:05:31,215 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 434 transitions. [2020-04-18 15:05:31,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:05:31,216 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1672836973] [2020-04-18 15:05:31,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:05:31,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:05:31,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1672836973] [2020-04-18 15:05:31,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:05:31,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:05:31,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:05:31,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:05:31,218 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 9 states. [2020-04-18 15:05:31,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:31,383 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-18 15:05:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 15:05:31,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 15:05:31,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:05:31,384 INFO L225 Difference]: With dead ends: 35 [2020-04-18 15:05:31,385 INFO L226 Difference]: Without dead ends: 29 [2020-04-18 15:05:31,385 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:05:31,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-18 15:05:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-18 15:05:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-18 15:05:31,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-04-18 15:05:31,387 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-04-18 15:05:31,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:05:31,388 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-04-18 15:05:31,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:05:31,390 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-04-18 15:05:31,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:05:31,390 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:05:31,391 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:05:31,391 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:05:31,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:31,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-04-18 15:05:31,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:05:31,392 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [24813604] [2020-04-18 15:05:31,393 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:31,400 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 504 transitions. [2020-04-18 15:05:31,402 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 15:05:31,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:05:31,404 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:05:31,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:31,404 INFO L82 PathProgramCache]: Analyzing trace with hash -32739391, now seen corresponding path program 2 times [2020-04-18 15:05:31,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:31,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985123086] [2020-04-18 15:05:31,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:31,446 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 15:05:31,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985123086] [2020-04-18 15:05:31,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:31,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:31,447 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:31,454 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:31,460 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 62 transitions. [2020-04-18 15:05:31,460 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:31,470 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:05:31,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:05:31,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:05:31,471 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-04-18 15:05:31,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:31,476 INFO L93 Difference]: Finished difference Result 222 states and 579 transitions. [2020-04-18 15:05:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 579 transitions. [2020-04-18 15:05:31,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:05:31,478 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:05:31,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:31,479 INFO L82 PathProgramCache]: Analyzing trace with hash -47074981, now seen corresponding path program 3 times [2020-04-18 15:05:31,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:31,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555289101] [2020-04-18 15:05:31,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:31,515 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 15:05:31,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555289101] [2020-04-18 15:05:31,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:31,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:31,516 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:31,519 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:31,525 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 81 transitions. [2020-04-18 15:05:31,525 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:31,556 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:05:31,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:05:31,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:05:31,557 INFO L87 Difference]: Start difference. First operand 222 states and 579 transitions. Second operand 4 states. [2020-04-18 15:05:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:31,577 INFO L93 Difference]: Finished difference Result 310 states and 769 transitions. [2020-04-18 15:05:31,577 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 769 transitions. [2020-04-18 15:05:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:05:31,578 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:05:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:31,579 INFO L82 PathProgramCache]: Analyzing trace with hash -47010241, now seen corresponding path program 4 times [2020-04-18 15:05:31,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:31,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227735963] [2020-04-18 15:05:31,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:31,614 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 15:05:31,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227735963] [2020-04-18 15:05:31,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:31,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:05:31,615 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:31,616 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:31,622 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 85 transitions. [2020-04-18 15:05:31,622 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:31,636 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:05:31,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:05:31,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:05:31,636 INFO L87 Difference]: Start difference. First operand 310 states and 769 transitions. Second operand 4 states. [2020-04-18 15:05:31,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:31,656 INFO L93 Difference]: Finished difference Result 478 states and 1169 transitions. [2020-04-18 15:05:31,656 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1169 transitions. [2020-04-18 15:05:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:05:31,660 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:05:31,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:31,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1702133057, now seen corresponding path program 5 times [2020-04-18 15:05:31,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:31,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036370882] [2020-04-18 15:05:31,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:31,727 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 15:05:31,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036370882] [2020-04-18 15:05:31,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:31,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:05:31,728 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:31,730 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:31,733 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-04-18 15:05:31,733 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:31,753 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:05:31,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:05:31,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:05:31,754 INFO L87 Difference]: Start difference. First operand 478 states and 1169 transitions. Second operand 4 states. [2020-04-18 15:05:31,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:31,787 INFO L93 Difference]: Finished difference Result 682 states and 1554 transitions. [2020-04-18 15:05:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1554 transitions. [2020-04-18 15:05:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:05:31,789 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:05:31,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:31,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1093921823, now seen corresponding path program 6 times [2020-04-18 15:05:31,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:31,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223986691] [2020-04-18 15:05:31,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:31,828 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 15:05:31,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223986691] [2020-04-18 15:05:31,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:31,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:05:31,829 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:31,831 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:31,833 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 15:05:31,833 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:31,847 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:05:31,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:05:31,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:05:31,848 INFO L87 Difference]: Start difference. First operand 682 states and 1554 transitions. Second operand 5 states. [2020-04-18 15:05:31,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:31,912 INFO L93 Difference]: Finished difference Result 748 states and 1636 transitions. [2020-04-18 15:05:31,912 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1636 transitions. [2020-04-18 15:05:31,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:05:31,914 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:05:31,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:31,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1260155603, now seen corresponding path program 7 times [2020-04-18 15:05:31,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:31,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306536359] [2020-04-18 15:05:31,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:31,961 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 15:05:31,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306536359] [2020-04-18 15:05:31,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:31,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:05:31,962 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:31,963 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:31,966 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 26 transitions. [2020-04-18 15:05:31,967 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:32,013 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:05:32,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:05:32,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:05:32,014 INFO L87 Difference]: Start difference. First operand 748 states and 1636 transitions. Second operand 6 states. [2020-04-18 15:05:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:32,122 INFO L93 Difference]: Finished difference Result 756 states and 1640 transitions. [2020-04-18 15:05:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1640 transitions. [2020-04-18 15:05:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 15:05:32,125 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:05:32,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:05:32,126 INFO L82 PathProgramCache]: Analyzing trace with hash 722630491, now seen corresponding path program 8 times [2020-04-18 15:05:32,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:05:32,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106401856] [2020-04-18 15:05:32,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:05:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:05:32,162 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 15:05:32,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106401856] [2020-04-18 15:05:32,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:05:32,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:05:32,163 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:05:32,165 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:05:32,169 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 64 transitions. [2020-04-18 15:05:32,169 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:05:32,240 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:05:32,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:05:32,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:05:32,241 INFO L87 Difference]: Start difference. First operand 756 states and 1640 transitions. Second operand 5 states. [2020-04-18 15:05:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:32,267 INFO L93 Difference]: Finished difference Result 1018 states and 2149 transitions. [2020-04-18 15:05:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 2149 transitions. [2020-04-18 15:05:32,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:05:32,270 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [24813604] [2020-04-18 15:05:32,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:05:32,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:05:32,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [24813604] [2020-04-18 15:05:32,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 15:05:32,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:05:32,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 15:05:32,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-04-18 15:05:32,272 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 14 states. [2020-04-18 15:05:32,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:05:32,519 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-18 15:05:32,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:05:32,519 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2020-04-18 15:05:32,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:05:32,520 INFO L225 Difference]: With dead ends: 28 [2020-04-18 15:05:32,520 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:05:32,521 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2020-04-18 15:05:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:05:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:05:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:05:32,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:05:32,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 15:05:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:05:32,522 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:05:32,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 15:05:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:05:32,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:05:32,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:05:32 BasicIcfg [2020-04-18 15:05:32,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:05:32,528 INFO L168 Benchmark]: Toolchain (without parser) took 6818.79 ms. Allocated memory was 137.9 MB in the beginning and 291.5 MB in the end (delta: 153.6 MB). Free memory was 100.7 MB in the beginning and 185.7 MB in the end (delta: -85.0 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:05:32,528 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 15:05:32,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.40 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.8 MB in the beginning and 158.6 MB in the end (delta: -59.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:05:32,529 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.23 ms. Allocated memory is still 201.9 MB. Free memory was 158.6 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:05:32,531 INFO L168 Benchmark]: Boogie Preprocessor took 26.00 ms. Allocated memory is still 201.9 MB. Free memory was 156.5 MB in the beginning and 155.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:05:32,536 INFO L168 Benchmark]: RCFGBuilder took 484.02 ms. Allocated memory is still 201.9 MB. Free memory was 155.2 MB in the beginning and 133.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 15:05:32,538 INFO L168 Benchmark]: TraceAbstraction took 5569.46 ms. Allocated memory was 201.9 MB in the beginning and 291.5 MB in the end (delta: 89.7 MB). Free memory was 133.0 MB in the beginning and 185.7 MB in the end (delta: -52.7 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:05:32,540 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 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.40 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 98.8 MB in the beginning and 158.6 MB in the end (delta: -59.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 70.23 ms. Allocated memory is still 201.9 MB. Free memory was 158.6 MB in the beginning and 156.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.00 ms. Allocated memory is still 201.9 MB. Free memory was 156.5 MB in the beginning and 155.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 484.02 ms. Allocated memory is still 201.9 MB. Free memory was 155.2 MB in the beginning and 133.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5569.46 ms. Allocated memory was 201.9 MB in the beginning and 291.5 MB in the end (delta: 89.7 MB). Free memory was 133.0 MB in the beginning and 185.7 MB in the end (delta: -52.7 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 606 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 105 SDtfs, 152 SDslu, 214 SDs, 0 SdLazy, 263 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 412 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 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...