java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:19:30,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:19:30,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:19:30,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:19:30,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:19:30,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:19:30,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:19:30,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:19:30,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:19:30,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:19:30,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:19:30,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:19:30,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:19:30,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:19:30,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:19:30,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:19:30,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:19:30,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:19:30,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:19:30,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:19:30,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:19:30,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:19:30,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:19:30,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:19:30,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:19:30,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:19:30,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:19:30,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:19:30,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:19:30,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:19:30,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:19:30,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:19:30,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:19:30,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:19:30,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:19:30,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:19:30,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:19:30,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:19:30,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:19:30,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:19:30,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:19:30,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:19:30,395 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:19:30,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:19:30,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:19:30,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:19:30,397 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:19:30,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:19:30,398 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:19:30,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:19:30,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:19:30,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:19:30,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:19:30,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:19:30,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:19:30,399 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:19:30,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:19:30,399 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:19:30,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:19:30,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:19:30,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:19:30,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:19:30,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:19:30,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:30,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:19:30,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:19:30,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:19:30,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:19:30,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:19:30,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:19:30,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:19:30,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:19:30,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:19:30,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:19:30,690 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:19:30,691 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:19:30,692 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2019-10-13 19:19:30,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33d5e02c/3663d881ceb542cbb18d99c7bcb1f712/FLAGc3110df26 [2019-10-13 19:19:31,478 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:19:31,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2019-10-13 19:19:31,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33d5e02c/3663d881ceb542cbb18d99c7bcb1f712/FLAGc3110df26 [2019-10-13 19:19:31,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33d5e02c/3663d881ceb542cbb18d99c7bcb1f712 [2019-10-13 19:19:31,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:19:31,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:19:31,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:31,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:19:31,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:19:31,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:31" (1/1) ... [2019-10-13 19:19:31,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2007b307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:31, skipping insertion in model container [2019-10-13 19:19:31,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:31" (1/1) ... [2019-10-13 19:19:31,704 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:19:31,789 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:19:32,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:32,547 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:19:32,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:32,752 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:19:32,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:32 WrapperNode [2019-10-13 19:19:32,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:32,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:19:32,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:19:32,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:19:32,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:32" (1/1) ... [2019-10-13 19:19:32,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:32" (1/1) ... [2019-10-13 19:19:32,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:32" (1/1) ... [2019-10-13 19:19:32,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:32" (1/1) ... [2019-10-13 19:19:32,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:32" (1/1) ... [2019-10-13 19:19:32,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:32" (1/1) ... [2019-10-13 19:19:32,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:32" (1/1) ... [2019-10-13 19:19:32,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:19:32,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:19:32,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:19:32,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:19:32,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:19:33,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:19:33,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:33,013 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:19:33,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:19:33,014 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:19:33,014 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:19:33,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:19:33,014 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:19:33,015 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:19:33,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:19:33,015 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:19:33,015 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:19:33,016 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:19:33,016 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:19:33,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:19:33,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:19:33,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:19:33,017 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:19:33,017 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:19:33,017 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:19:33,018 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:19:33,018 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:19:33,018 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:19:33,019 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:19:33,019 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:19:33,019 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:19:33,019 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:19:33,019 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:19:33,020 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:19:33,020 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:19:33,020 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:19:33,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:19:33,020 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:19:33,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:19:33,021 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:19:33,021 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:19:33,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:19:33,021 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:19:33,021 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:19:33,022 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:19:33,022 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:19:33,022 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:19:33,022 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:19:33,022 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:19:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:19:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:19:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:19:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:19:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:19:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:19:33,024 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:19:33,024 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:19:33,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:19:33,024 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:19:33,024 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:19:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:19:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:19:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:19:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:19:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:19:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:19:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:19:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:19:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:19:33,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:33,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:33,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:33,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:33,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:33,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:19:33,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:19:33,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:19:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:19:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:19:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:19:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:19:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:19:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:19:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:19:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:19:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:19:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:19:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:19:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:19:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:19:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:19:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:19:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:19:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:19:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:19:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:19:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:19:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:19:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:19:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:19:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:19:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:19:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:19:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:19:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:19:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:19:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:19:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:19:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:19:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:19:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:19:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:19:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:19:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:19:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:19:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:19:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:19:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:19:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:19:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:19:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:19:33,036 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:19:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:19:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:19:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:19:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:19:33,037 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:19:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:19:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:19:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:19:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:19:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:19:33,038 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:19:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:19:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:19:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:19:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:19:33,039 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:19:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:19:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:33,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:19:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:19:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:19:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:19:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:19:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:19:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:19:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:19:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:19:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:19:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:19:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:19:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:19:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:19:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:19:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:19:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:19:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:19:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:19:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:19:35,533 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:19:35,533 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:19:35,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:35 BoogieIcfgContainer [2019-10-13 19:19:35,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:19:35,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:19:35,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:19:35,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:19:35,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:19:31" (1/3) ... [2019-10-13 19:19:35,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f80f435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:35, skipping insertion in model container [2019-10-13 19:19:35,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:32" (2/3) ... [2019-10-13 19:19:35,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f80f435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:35, skipping insertion in model container [2019-10-13 19:19:35,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:35" (3/3) ... [2019-10-13 19:19:35,548 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2019-10-13 19:19:35,559 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:19:35,572 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:19:35,586 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:19:35,631 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:19:35,631 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:19:35,631 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:19:35,631 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:19:35,631 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:19:35,632 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:19:35,632 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:19:35,632 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:19:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states. [2019-10-13 19:19:35,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:19:35,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:35,715 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:35,717 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:35,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:35,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1684388016, now seen corresponding path program 1 times [2019-10-13 19:19:35,734 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:35,734 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051459948] [2019-10-13 19:19:35,735 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:35,735 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:35,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,437 WARN L191 SmtUtils]: Spent 969.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:38,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051459948] [2019-10-13 19:19:38,052 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930567744] [2019-10-13 19:19:38,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:38,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:38,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:38,730 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:19:38,731 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:38,732 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-13 19:19:38,732 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255223745] [2019-10-13 19:19:38,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:38,738 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:38,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:38,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:38,757 INFO L87 Difference]: Start difference. First operand 788 states. Second operand 4 states. [2019-10-13 19:19:39,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:39,025 INFO L93 Difference]: Finished difference Result 1291 states and 2100 transitions. [2019-10-13 19:19:39,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:39,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-10-13 19:19:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:39,068 INFO L225 Difference]: With dead ends: 1291 [2019-10-13 19:19:39,068 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 19:19:39,082 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:19:39,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 19:19:39,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 19:19:39,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 19:19:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1038 transitions. [2019-10-13 19:19:39,233 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1038 transitions. Word has length 152 [2019-10-13 19:19:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:39,234 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1038 transitions. [2019-10-13 19:19:39,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:39,234 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1038 transitions. [2019-10-13 19:19:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 19:19:39,250 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:39,251 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:39,459 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:39,463 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:39,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:39,463 INFO L82 PathProgramCache]: Analyzing trace with hash 940432692, now seen corresponding path program 1 times [2019-10-13 19:19:39,464 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:39,464 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926125693] [2019-10-13 19:19:39,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:39,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:39,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,499 WARN L191 SmtUtils]: Spent 876.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,664 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:19:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:19:40,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926125693] [2019-10-13 19:19:40,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955765587] [2019-10-13 19:19:40,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:41,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:41,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:19:41,577 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:41,577 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:19:41,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685983599] [2019-10-13 19:19:41,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:41,579 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:41,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:41,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:41,580 INFO L87 Difference]: Start difference. First operand 651 states and 1038 transitions. Second operand 4 states. [2019-10-13 19:19:41,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:41,905 INFO L93 Difference]: Finished difference Result 1313 states and 2123 transitions. [2019-10-13 19:19:41,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:41,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2019-10-13 19:19:41,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:41,912 INFO L225 Difference]: With dead ends: 1313 [2019-10-13 19:19:41,912 INFO L226 Difference]: Without dead ends: 690 [2019-10-13 19:19:41,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:41,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-13 19:19:41,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2019-10-13 19:19:41,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-13 19:19:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1112 transitions. [2019-10-13 19:19:41,959 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1112 transitions. Word has length 154 [2019-10-13 19:19:41,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:41,959 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 1112 transitions. [2019-10-13 19:19:41,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1112 transitions. [2019-10-13 19:19:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 19:19:41,966 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:41,966 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:42,181 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:42,182 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:42,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:42,182 INFO L82 PathProgramCache]: Analyzing trace with hash 723677314, now seen corresponding path program 1 times [2019-10-13 19:19:42,183 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:42,183 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068436612] [2019-10-13 19:19:42,183 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:42,184 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:42,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,448 WARN L191 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:19:43,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068436612] [2019-10-13 19:19:43,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035912133] [2019-10-13 19:19:43,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:44,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:19:44,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:19:44,507 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:44,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 14 [2019-10-13 19:19:44,508 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000354698] [2019-10-13 19:19:44,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:44,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:44,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:44,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:44,512 INFO L87 Difference]: Start difference. First operand 690 states and 1112 transitions. Second operand 7 states. [2019-10-13 19:19:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:44,729 INFO L93 Difference]: Finished difference Result 1366 states and 2214 transitions. [2019-10-13 19:19:44,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:19:44,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2019-10-13 19:19:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:44,743 INFO L225 Difference]: With dead ends: 1366 [2019-10-13 19:19:44,744 INFO L226 Difference]: Without dead ends: 704 [2019-10-13 19:19:44,749 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:19:44,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-10-13 19:19:44,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 697. [2019-10-13 19:19:44,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2019-10-13 19:19:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1123 transitions. [2019-10-13 19:19:44,813 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1123 transitions. Word has length 156 [2019-10-13 19:19:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:44,816 INFO L462 AbstractCegarLoop]: Abstraction has 697 states and 1123 transitions. [2019-10-13 19:19:44,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1123 transitions. [2019-10-13 19:19:44,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 19:19:44,823 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:44,823 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:45,032 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:45,033 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:45,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:45,034 INFO L82 PathProgramCache]: Analyzing trace with hash -336665820, now seen corresponding path program 1 times [2019-10-13 19:19:45,034 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:45,034 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185436285] [2019-10-13 19:19:45,034 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:45,035 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:45,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,034 WARN L191 SmtUtils]: Spent 897.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:19:46,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185436285] [2019-10-13 19:19:46,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477255041] [2019-10-13 19:19:46,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:46,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:46,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:47,038 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:47,038 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:19:47,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970986116] [2019-10-13 19:19:47,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:47,039 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:47,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:47,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:47,039 INFO L87 Difference]: Start difference. First operand 697 states and 1123 transitions. Second operand 4 states. [2019-10-13 19:19:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:47,153 INFO L93 Difference]: Finished difference Result 1379 states and 2234 transitions. [2019-10-13 19:19:47,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:47,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2019-10-13 19:19:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:47,165 INFO L225 Difference]: With dead ends: 1379 [2019-10-13 19:19:47,165 INFO L226 Difference]: Without dead ends: 708 [2019-10-13 19:19:47,170 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:47,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-13 19:19:47,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2019-10-13 19:19:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-13 19:19:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1131 transitions. [2019-10-13 19:19:47,204 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1131 transitions. Word has length 157 [2019-10-13 19:19:47,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:47,204 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 1131 transitions. [2019-10-13 19:19:47,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1131 transitions. [2019-10-13 19:19:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 19:19:47,214 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:47,214 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:47,426 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:47,427 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:47,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:47,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1075846183, now seen corresponding path program 1 times [2019-10-13 19:19:47,427 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:47,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099062695] [2019-10-13 19:19:47,428 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:47,428 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:47,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,437 WARN L191 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:19:48,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099062695] [2019-10-13 19:19:48,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933082505] [2019-10-13 19:19:48,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:49,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:19:49,536 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:49,536 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:19:49,536 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260154838] [2019-10-13 19:19:49,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:49,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:49,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:49,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:49,538 INFO L87 Difference]: Start difference. First operand 706 states and 1131 transitions. Second operand 4 states. [2019-10-13 19:19:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:49,641 INFO L93 Difference]: Finished difference Result 1359 states and 2195 transitions. [2019-10-13 19:19:49,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:49,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-10-13 19:19:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:49,648 INFO L225 Difference]: With dead ends: 1359 [2019-10-13 19:19:49,649 INFO L226 Difference]: Without dead ends: 706 [2019-10-13 19:19:49,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2019-10-13 19:19:49,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2019-10-13 19:19:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-13 19:19:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1126 transitions. [2019-10-13 19:19:49,687 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1126 transitions. Word has length 160 [2019-10-13 19:19:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:49,688 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 1126 transitions. [2019-10-13 19:19:49,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:49,688 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1126 transitions. [2019-10-13 19:19:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 19:19:49,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:49,695 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:49,904 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:49,904 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:49,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:49,904 INFO L82 PathProgramCache]: Analyzing trace with hash 272976111, now seen corresponding path program 1 times [2019-10-13 19:19:49,905 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:49,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193337085] [2019-10-13 19:19:49,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:49,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:49,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,832 WARN L191 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:19:51,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193337085] [2019-10-13 19:19:51,165 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476399645] [2019-10-13 19:19:51,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 2989 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:51,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:51,762 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:51,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:19:51,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702433479] [2019-10-13 19:19:51,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:51,763 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:51,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:51,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:51,764 INFO L87 Difference]: Start difference. First operand 706 states and 1126 transitions. Second operand 4 states. [2019-10-13 19:19:52,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:52,015 INFO L93 Difference]: Finished difference Result 1355 states and 2186 transitions. [2019-10-13 19:19:52,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:52,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-10-13 19:19:52,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:52,023 INFO L225 Difference]: With dead ends: 1355 [2019-10-13 19:19:52,023 INFO L226 Difference]: Without dead ends: 748 [2019-10-13 19:19:52,027 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:52,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-10-13 19:19:52,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 745. [2019-10-13 19:19:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2019-10-13 19:19:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1199 transitions. [2019-10-13 19:19:52,059 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1199 transitions. Word has length 161 [2019-10-13 19:19:52,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:52,059 INFO L462 AbstractCegarLoop]: Abstraction has 745 states and 1199 transitions. [2019-10-13 19:19:52,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1199 transitions. [2019-10-13 19:19:52,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 19:19:52,066 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:52,066 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:52,284 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:52,285 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:52,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:52,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1911239619, now seen corresponding path program 1 times [2019-10-13 19:19:52,286 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:52,286 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291865946] [2019-10-13 19:19:52,286 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:52,286 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:52,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,271 WARN L191 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:19:53,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291865946] [2019-10-13 19:19:53,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109994801] [2019-10-13 19:19:53,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:19:54,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:19:54,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:54,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-10-13 19:19:54,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779706873] [2019-10-13 19:19:54,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:54,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:54,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:54,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:54,542 INFO L87 Difference]: Start difference. First operand 745 states and 1199 transitions. Second operand 7 states. [2019-10-13 19:19:54,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:54,776 INFO L93 Difference]: Finished difference Result 1366 states and 2198 transitions. [2019-10-13 19:19:54,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:19:54,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2019-10-13 19:19:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:54,792 INFO L225 Difference]: With dead ends: 1366 [2019-10-13 19:19:54,793 INFO L226 Difference]: Without dead ends: 759 [2019-10-13 19:19:54,800 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:19:54,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-10-13 19:19:54,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 752. [2019-10-13 19:19:54,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2019-10-13 19:19:54,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1208 transitions. [2019-10-13 19:19:54,849 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1208 transitions. Word has length 162 [2019-10-13 19:19:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:54,849 INFO L462 AbstractCegarLoop]: Abstraction has 752 states and 1208 transitions. [2019-10-13 19:19:54,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1208 transitions. [2019-10-13 19:19:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 19:19:54,855 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:54,856 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:55,065 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:55,066 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:55,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:55,066 INFO L82 PathProgramCache]: Analyzing trace with hash 275265615, now seen corresponding path program 1 times [2019-10-13 19:19:55,067 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:55,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206684032] [2019-10-13 19:19:55,067 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:55,067 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:55,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,118 WARN L191 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:19:56,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206684032] [2019-10-13 19:19:56,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447313504] [2019-10-13 19:19:56,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:57,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:19:57,264 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:57,265 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:19:57,265 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111027468] [2019-10-13 19:19:57,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:57,266 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:57,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:57,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:57,266 INFO L87 Difference]: Start difference. First operand 752 states and 1208 transitions. Second operand 4 states. [2019-10-13 19:19:57,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:57,378 INFO L93 Difference]: Finished difference Result 1411 states and 2278 transitions. [2019-10-13 19:19:57,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:19:57,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2019-10-13 19:19:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:57,390 INFO L225 Difference]: With dead ends: 1411 [2019-10-13 19:19:57,390 INFO L226 Difference]: Without dead ends: 752 [2019-10-13 19:19:57,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-10-13 19:19:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2019-10-13 19:19:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2019-10-13 19:19:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1205 transitions. [2019-10-13 19:19:57,450 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1205 transitions. Word has length 163 [2019-10-13 19:19:57,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:57,451 INFO L462 AbstractCegarLoop]: Abstraction has 752 states and 1205 transitions. [2019-10-13 19:19:57,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:57,452 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1205 transitions. [2019-10-13 19:19:57,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 19:19:57,462 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:57,462 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:57,670 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:57,670 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:57,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:57,671 INFO L82 PathProgramCache]: Analyzing trace with hash -316063958, now seen corresponding path program 1 times [2019-10-13 19:19:57,671 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:57,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056621304] [2019-10-13 19:19:57,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:57,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:57,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,581 WARN L191 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:19:58,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056621304] [2019-10-13 19:19:58,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967161481] [2019-10-13 19:19:58,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:19:59,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:59,493 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:59,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 9 [2019-10-13 19:19:59,493 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116147936] [2019-10-13 19:19:59,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:59,494 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:59,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:59,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:19:59,495 INFO L87 Difference]: Start difference. First operand 752 states and 1205 transitions. Second operand 4 states. [2019-10-13 19:19:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:59,572 INFO L93 Difference]: Finished difference Result 1463 states and 2366 transitions. [2019-10-13 19:19:59,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:59,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2019-10-13 19:19:59,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:59,579 INFO L225 Difference]: With dead ends: 1463 [2019-10-13 19:19:59,579 INFO L226 Difference]: Without dead ends: 735 [2019-10-13 19:19:59,584 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:19:59,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2019-10-13 19:19:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2019-10-13 19:19:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2019-10-13 19:19:59,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1176 transitions. [2019-10-13 19:19:59,616 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1176 transitions. Word has length 165 [2019-10-13 19:19:59,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:59,616 INFO L462 AbstractCegarLoop]: Abstraction has 735 states and 1176 transitions. [2019-10-13 19:19:59,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:59,616 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1176 transitions. [2019-10-13 19:19:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 19:19:59,622 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:59,622 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:59,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:59,829 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:59,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:59,830 INFO L82 PathProgramCache]: Analyzing trace with hash 702741203, now seen corresponding path program 1 times [2019-10-13 19:19:59,831 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:59,831 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930242227] [2019-10-13 19:19:59,831 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:59,831 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:59,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,942 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:20:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:20:01,341 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930242227] [2019-10-13 19:20:01,341 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824635085] [2019-10-13 19:20:01,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:01,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:20:01,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:01,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 15 [2019-10-13 19:20:01,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158938322] [2019-10-13 19:20:01,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:01,963 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:01,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:01,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:20:01,964 INFO L87 Difference]: Start difference. First operand 735 states and 1176 transitions. Second operand 7 states. [2019-10-13 19:20:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:02,111 INFO L93 Difference]: Finished difference Result 1418 states and 2274 transitions. [2019-10-13 19:20:02,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:02,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2019-10-13 19:20:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:02,118 INFO L225 Difference]: With dead ends: 1418 [2019-10-13 19:20:02,119 INFO L226 Difference]: Without dead ends: 737 [2019-10-13 19:20:02,123 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:20:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-10-13 19:20:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 729. [2019-10-13 19:20:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2019-10-13 19:20:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1162 transitions. [2019-10-13 19:20:02,158 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1162 transitions. Word has length 162 [2019-10-13 19:20:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:02,160 INFO L462 AbstractCegarLoop]: Abstraction has 729 states and 1162 transitions. [2019-10-13 19:20:02,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1162 transitions. [2019-10-13 19:20:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 19:20:02,166 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:02,166 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:02,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:02,380 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:02,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1210154117, now seen corresponding path program 1 times [2019-10-13 19:20:02,381 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:02,382 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534451872] [2019-10-13 19:20:02,382 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:02,382 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:02,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,501 WARN L191 SmtUtils]: Spent 999.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:20:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat