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_spec3_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 04:11:05,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 04:11:05,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 04:11:05,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 04:11:05,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 04:11:05,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 04:11:05,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 04:11:05,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 04:11:05,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 04:11:05,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 04:11:05,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 04:11:05,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 04:11:05,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 04:11:05,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 04:11:05,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 04:11:05,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 04:11:05,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 04:11:05,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 04:11:05,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 04:11:05,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 04:11:05,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 04:11:05,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 04:11:05,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 04:11:05,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 04:11:05,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 04:11:05,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 04:11:05,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 04:11:05,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 04:11:05,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 04:11:05,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 04:11:05,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 04:11:05,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 04:11:05,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 04:11:05,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 04:11:05,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 04:11:05,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 04:11:05,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 04:11:05,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 04:11:05,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 04:11:05,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 04:11:05,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 04:11:05,589 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 [2019-09-08 04:11:05,605 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 04:11:05,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 04:11:05,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 04:11:05,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 04:11:05,607 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 04:11:05,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 04:11:05,608 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 04:11:05,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 04:11:05,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 04:11:05,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 04:11:05,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 04:11:05,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 04:11:05,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 04:11:05,609 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 04:11:05,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 04:11:05,609 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 04:11:05,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 04:11:05,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 04:11:05,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 04:11:05,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 04:11:05,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 04:11:05,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 04:11:05,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 04:11:05,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 04:11:05,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 04:11:05,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 04:11:05,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 04:11:05,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 04:11:05,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 04:11:05,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 04:11:05,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 04:11:05,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 04:11:05,660 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 04:11:05,660 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 04:11:05,661 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product03.cil.c [2019-09-08 04:11:05,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569c9f390/4051b67f8b1249f59eac74f48511077b/FLAGccf1df369 [2019-09-08 04:11:06,398 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 04:11:06,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product03.cil.c [2019-09-08 04:11:06,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569c9f390/4051b67f8b1249f59eac74f48511077b/FLAGccf1df369 [2019-09-08 04:11:06,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569c9f390/4051b67f8b1249f59eac74f48511077b [2019-09-08 04:11:06,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 04:11:06,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 04:11:06,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 04:11:06,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 04:11:06,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 04:11:06,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 04:11:06" (1/1) ... [2019-09-08 04:11:06,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1d362a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:11:06, skipping insertion in model container [2019-09-08 04:11:06,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 04:11:06" (1/1) ... [2019-09-08 04:11:06,596 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 04:11:06,683 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 04:11:07,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 04:11:07,480 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 04:11:07,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 04:11:07,686 INFO L192 MainTranslator]: Completed translation [2019-09-08 04:11:07,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:11:07 WrapperNode [2019-09-08 04:11:07,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 04:11:07,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 04:11:07,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 04:11:07,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 04:11:07,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:11:07" (1/1) ... [2019-09-08 04:11:07,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:11:07" (1/1) ... [2019-09-08 04:11:07,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:11:07" (1/1) ... [2019-09-08 04:11:07,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:11:07" (1/1) ... [2019-09-08 04:11:07,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:11:07" (1/1) ... [2019-09-08 04:11:07,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:11:07" (1/1) ... [2019-09-08 04:11:07,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:11:07" (1/1) ... [2019-09-08 04:11:07,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 04:11:07,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 04:11:07,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 04:11:07,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 04:11:07,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:11:07" (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 [2019-09-08 04:11:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 04:11:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 04:11:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-08 04:11:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-08 04:11:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-08 04:11:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-08 04:11:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-08 04:11:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-08 04:11:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-08 04:11:08,007 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-09-08 04:11:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-09-08 04:11:08,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-08 04:11:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-09-08 04:11:08,009 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-09-08 04:11:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-09-08 04:11:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-09-08 04:11:08,012 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-09-08 04:11:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-09-08 04:11:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-09-08 04:11:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-09-08 04:11:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-09-08 04:11:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-08 04:11:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-08 04:11:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-08 04:11:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-08 04:11:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-08 04:11:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-08 04:11:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-09-08 04:11:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-09-08 04:11:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-09-08 04:11:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-09-08 04:11:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-09-08 04:11:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-09-08 04:11:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-09-08 04:11:08,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-09-08 04:11:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-09-08 04:11:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-09-08 04:11:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-09-08 04:11:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-09-08 04:11:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-09-08 04:11:08,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-09-08 04:11:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2019-09-08 04:11:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-09-08 04:11:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-09-08 04:11:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-09-08 04:11:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-09-08 04:11:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-09-08 04:11:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-09-08 04:11:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-09-08 04:11:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-08 04:11:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-09-08 04:11:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-09-08 04:11:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-09-08 04:11:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-09-08 04:11:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-09-08 04:11:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-09-08 04:11:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-09-08 04:11:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-09-08 04:11:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-09-08 04:11:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-09-08 04:11:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-09-08 04:11:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-09-08 04:11:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-09-08 04:11:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-09-08 04:11:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-09-08 04:11:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-08 04:11:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-09-08 04:11:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-09-08 04:11:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-09-08 04:11:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-08 04:11:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-09-08 04:11:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-08 04:11:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-08 04:11:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 04:11:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 04:11:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 04:11:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-08 04:11:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 04:11:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 04:11:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-08 04:11:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 04:11:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 04:11:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 04:11:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 04:11:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-08 04:11:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 04:11:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-08 04:11:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-08 04:11:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 04:11:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-08 04:11:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-08 04:11:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 04:11:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-08 04:11:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-09-08 04:11:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-09-08 04:11:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-08 04:11:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-09-08 04:11:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-09-08 04:11:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-09-08 04:11:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-09-08 04:11:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-09-08 04:11:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-09-08 04:11:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-08 04:11:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-09-08 04:11:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-09-08 04:11:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-09-08 04:11:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-08 04:11:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-09-08 04:11:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-09-08 04:11:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-09-08 04:11:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-09-08 04:11:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-09-08 04:11:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-09-08 04:11:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-09-08 04:11:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-09-08 04:11:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-09-08 04:11:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-09-08 04:11:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-08 04:11:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-08 04:11:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-08 04:11:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-08 04:11:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-08 04:11:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-08 04:11:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-08 04:11:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-09-08 04:11:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-09-08 04:11:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-09-08 04:11:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-09-08 04:11:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-09-08 04:11:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-09-08 04:11:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-09-08 04:11:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-09-08 04:11:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-09-08 04:11:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-09-08 04:11:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-09-08 04:11:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-09-08 04:11:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2019-09-08 04:11:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-09-08 04:11:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-09-08 04:11:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-09-08 04:11:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-09-08 04:11:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-09-08 04:11:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-09-08 04:11:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-09-08 04:11:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-09-08 04:11:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-08 04:11:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-09-08 04:11:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-09-08 04:11:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-09-08 04:11:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-09-08 04:11:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-09-08 04:11:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-09-08 04:11:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-09-08 04:11:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-09-08 04:11:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-09-08 04:11:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-08 04:11:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-09-08 04:11:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-08 04:11:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-08 04:11:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 04:11:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 04:11:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-08 04:11:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 04:11:10,442 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 04:11:10,442 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-09-08 04:11:10,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 04:11:10 BoogieIcfgContainer [2019-09-08 04:11:10,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 04:11:10,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 04:11:10,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 04:11:10,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 04:11:10,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 04:11:06" (1/3) ... [2019-09-08 04:11:10,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@baa9037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 04:11:10, skipping insertion in model container [2019-09-08 04:11:10,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:11:07" (2/3) ... [2019-09-08 04:11:10,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@baa9037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 04:11:10, skipping insertion in model container [2019-09-08 04:11:10,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 04:11:10" (3/3) ... [2019-09-08 04:11:10,458 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product03.cil.c [2019-09-08 04:11:10,469 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 04:11:10,480 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 04:11:10,497 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 04:11:10,546 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 04:11:10,547 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 04:11:10,547 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 04:11:10,547 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 04:11:10,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 04:11:10,547 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 04:11:10,547 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 04:11:10,548 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 04:11:10,548 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 04:11:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states. [2019-09-08 04:11:10,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-08 04:11:10,626 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:10,628 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:10,630 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:10,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:10,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1710974497, now seen corresponding path program 1 times [2019-09-08 04:11:10,639 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:10,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:10,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:10,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:10,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:11,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:11,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:11:11,297 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:11:11,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:11:11,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:11:11,314 INFO L87 Difference]: Start difference. First operand 769 states. Second operand 7 states. [2019-09-08 04:11:11,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:11,633 INFO L93 Difference]: Finished difference Result 1217 states and 1978 transitions. [2019-09-08 04:11:11,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:11:11,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2019-09-08 04:11:11,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:11,679 INFO L225 Difference]: With dead ends: 1217 [2019-09-08 04:11:11,679 INFO L226 Difference]: Without dead ends: 617 [2019-09-08 04:11:11,693 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 04:11:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-09-08 04:11:11,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 615. [2019-09-08 04:11:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-09-08 04:11:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 984 transitions. [2019-09-08 04:11:11,808 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 984 transitions. Word has length 141 [2019-09-08 04:11:11,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:11,809 INFO L475 AbstractCegarLoop]: Abstraction has 615 states and 984 transitions. [2019-09-08 04:11:11,809 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:11:11,809 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 984 transitions. [2019-09-08 04:11:11,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-09-08 04:11:11,816 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:11,816 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:11,817 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:11,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:11,817 INFO L82 PathProgramCache]: Analyzing trace with hash 896936914, now seen corresponding path program 1 times [2019-09-08 04:11:11,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:11,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:11,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:11,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:11,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:12,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:12,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:11:12,134 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:11:12,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:11:12,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:11:12,136 INFO L87 Difference]: Start difference. First operand 615 states and 984 transitions. Second operand 4 states. [2019-09-08 04:11:12,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:12,248 INFO L93 Difference]: Finished difference Result 1196 states and 1933 transitions. [2019-09-08 04:11:12,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 04:11:12,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-09-08 04:11:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:12,255 INFO L225 Difference]: With dead ends: 1196 [2019-09-08 04:11:12,255 INFO L226 Difference]: Without dead ends: 597 [2019-09-08 04:11:12,261 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:11:12,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2019-09-08 04:11:12,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2019-09-08 04:11:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2019-09-08 04:11:12,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 951 transitions. [2019-09-08 04:11:12,307 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 951 transitions. Word has length 142 [2019-09-08 04:11:12,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:12,308 INFO L475 AbstractCegarLoop]: Abstraction has 597 states and 951 transitions. [2019-09-08 04:11:12,308 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:11:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 951 transitions. [2019-09-08 04:11:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-09-08 04:11:12,312 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:12,313 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:12,313 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:12,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:12,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1517302758, now seen corresponding path program 1 times [2019-09-08 04:11:12,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:12,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:12,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:12,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:12,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:12,539 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:12,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:12,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:11:12,540 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:11:12,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:11:12,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:11:12,541 INFO L87 Difference]: Start difference. First operand 597 states and 951 transitions. Second operand 7 states. [2019-09-08 04:11:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:12,667 INFO L93 Difference]: Finished difference Result 1165 states and 1875 transitions. [2019-09-08 04:11:12,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:11:12,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2019-09-08 04:11:12,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:12,676 INFO L225 Difference]: With dead ends: 1165 [2019-09-08 04:11:12,677 INFO L226 Difference]: Without dead ends: 591 [2019-09-08 04:11:12,680 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 04:11:12,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-09-08 04:11:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2019-09-08 04:11:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-09-08 04:11:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 938 transitions. [2019-09-08 04:11:12,736 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 938 transitions. Word has length 142 [2019-09-08 04:11:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:12,738 INFO L475 AbstractCegarLoop]: Abstraction has 591 states and 938 transitions. [2019-09-08 04:11:12,738 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:11:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 938 transitions. [2019-09-08 04:11:12,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-09-08 04:11:12,745 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:12,745 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:12,745 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:12,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:12,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1570420835, now seen corresponding path program 1 times [2019-09-08 04:11:12,746 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:12,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:12,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:12,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:12,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:12,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:12,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:11:12,966 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:11:12,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:11:12,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:11:12,968 INFO L87 Difference]: Start difference. First operand 591 states and 938 transitions. Second operand 7 states. [2019-09-08 04:11:13,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:13,066 INFO L93 Difference]: Finished difference Result 1153 states and 1849 transitions. [2019-09-08 04:11:13,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:11:13,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-09-08 04:11:13,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:13,076 INFO L225 Difference]: With dead ends: 1153 [2019-09-08 04:11:13,076 INFO L226 Difference]: Without dead ends: 585 [2019-09-08 04:11:13,083 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 04:11:13,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-09-08 04:11:13,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2019-09-08 04:11:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2019-09-08 04:11:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 925 transitions. [2019-09-08 04:11:13,117 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 925 transitions. Word has length 143 [2019-09-08 04:11:13,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:13,117 INFO L475 AbstractCegarLoop]: Abstraction has 585 states and 925 transitions. [2019-09-08 04:11:13,117 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:11:13,118 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 925 transitions. [2019-09-08 04:11:13,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-08 04:11:13,123 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:13,123 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:13,123 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:13,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:13,124 INFO L82 PathProgramCache]: Analyzing trace with hash -115528610, now seen corresponding path program 1 times [2019-09-08 04:11:13,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:13,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:13,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:13,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:13,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:13,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:13,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:11:13,368 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:11:13,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:11:13,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:11:13,369 INFO L87 Difference]: Start difference. First operand 585 states and 925 transitions. Second operand 7 states. [2019-09-08 04:11:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:13,500 INFO L93 Difference]: Finished difference Result 1141 states and 1823 transitions. [2019-09-08 04:11:13,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:11:13,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2019-09-08 04:11:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:13,506 INFO L225 Difference]: With dead ends: 1141 [2019-09-08 04:11:13,506 INFO L226 Difference]: Without dead ends: 579 [2019-09-08 04:11:13,509 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 04:11:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-09-08 04:11:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-09-08 04:11:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-09-08 04:11:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 912 transitions. [2019-09-08 04:11:13,532 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 912 transitions. Word has length 144 [2019-09-08 04:11:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:13,533 INFO L475 AbstractCegarLoop]: Abstraction has 579 states and 912 transitions. [2019-09-08 04:11:13,533 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:11:13,533 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 912 transitions. [2019-09-08 04:11:13,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-08 04:11:13,536 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:13,537 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:13,537 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:13,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:13,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1354475425, now seen corresponding path program 1 times [2019-09-08 04:11:13,538 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:13,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:13,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:13,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:13,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:13,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:13,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:11:13,676 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:11:13,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:11:13,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:11:13,676 INFO L87 Difference]: Start difference. First operand 579 states and 912 transitions. Second operand 7 states. [2019-09-08 04:11:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:13,757 INFO L93 Difference]: Finished difference Result 1129 states and 1797 transitions. [2019-09-08 04:11:13,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:11:13,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2019-09-08 04:11:13,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:13,763 INFO L225 Difference]: With dead ends: 1129 [2019-09-08 04:11:13,763 INFO L226 Difference]: Without dead ends: 579 [2019-09-08 04:11:13,766 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 04:11:13,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-09-08 04:11:13,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-09-08 04:11:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-09-08 04:11:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 911 transitions. [2019-09-08 04:11:13,792 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 911 transitions. Word has length 144 [2019-09-08 04:11:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:13,792 INFO L475 AbstractCegarLoop]: Abstraction has 579 states and 911 transitions. [2019-09-08 04:11:13,792 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:11:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 911 transitions. [2019-09-08 04:11:13,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-09-08 04:11:13,796 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:13,797 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:13,797 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:13,797 INFO L82 PathProgramCache]: Analyzing trace with hash 538513127, now seen corresponding path program 1 times [2019-09-08 04:11:13,798 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:13,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:13,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:13,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:13,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:13,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:13,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:11:13,938 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:11:13,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:11:13,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:11:13,939 INFO L87 Difference]: Start difference. First operand 579 states and 911 transitions. Second operand 5 states. [2019-09-08 04:11:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:14,017 INFO L93 Difference]: Finished difference Result 1128 states and 1794 transitions. [2019-09-08 04:11:14,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:11:14,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2019-09-08 04:11:14,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:14,023 INFO L225 Difference]: With dead ends: 1128 [2019-09-08 04:11:14,024 INFO L226 Difference]: Without dead ends: 579 [2019-09-08 04:11:14,028 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 04:11:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-09-08 04:11:14,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-09-08 04:11:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-09-08 04:11:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 910 transitions. [2019-09-08 04:11:14,055 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 910 transitions. Word has length 145 [2019-09-08 04:11:14,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:14,056 INFO L475 AbstractCegarLoop]: Abstraction has 579 states and 910 transitions. [2019-09-08 04:11:14,056 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:11:14,056 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 910 transitions. [2019-09-08 04:11:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-09-08 04:11:14,060 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:14,061 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:14,061 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:14,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1098945642, now seen corresponding path program 1 times [2019-09-08 04:11:14,062 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:14,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:14,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:14,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:14,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:14,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:14,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:11:14,243 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:11:14,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:11:14,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:11:14,245 INFO L87 Difference]: Start difference. First operand 579 states and 910 transitions. Second operand 5 states. [2019-09-08 04:11:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:14,316 INFO L93 Difference]: Finished difference Result 1128 states and 1792 transitions. [2019-09-08 04:11:14,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:11:14,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-09-08 04:11:14,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:14,325 INFO L225 Difference]: With dead ends: 1128 [2019-09-08 04:11:14,325 INFO L226 Difference]: Without dead ends: 579 [2019-09-08 04:11:14,331 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 04:11:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-09-08 04:11:14,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-09-08 04:11:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-09-08 04:11:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 909 transitions. [2019-09-08 04:11:14,363 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 909 transitions. Word has length 146 [2019-09-08 04:11:14,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:14,364 INFO L475 AbstractCegarLoop]: Abstraction has 579 states and 909 transitions. [2019-09-08 04:11:14,364 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:11:14,364 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 909 transitions. [2019-09-08 04:11:14,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-09-08 04:11:14,371 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:14,371 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:14,372 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:14,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:14,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1332579362, now seen corresponding path program 1 times [2019-09-08 04:11:14,373 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:14,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:14,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:14,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:14,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:14,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:14,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:11:14,572 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:11:14,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:11:14,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:11:14,573 INFO L87 Difference]: Start difference. First operand 579 states and 909 transitions. Second operand 5 states. [2019-09-08 04:11:14,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:14,653 INFO L93 Difference]: Finished difference Result 1128 states and 1790 transitions. [2019-09-08 04:11:14,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:11:14,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-09-08 04:11:14,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:14,659 INFO L225 Difference]: With dead ends: 1128 [2019-09-08 04:11:14,660 INFO L226 Difference]: Without dead ends: 579 [2019-09-08 04:11:14,664 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 04:11:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-09-08 04:11:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-09-08 04:11:14,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-09-08 04:11:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 908 transitions. [2019-09-08 04:11:14,694 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 908 transitions. Word has length 147 [2019-09-08 04:11:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:14,694 INFO L475 AbstractCegarLoop]: Abstraction has 579 states and 908 transitions. [2019-09-08 04:11:14,699 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:11:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 908 transitions. [2019-09-08 04:11:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-09-08 04:11:14,705 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:14,706 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:14,706 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:14,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1053582449, now seen corresponding path program 1 times [2019-09-08 04:11:14,707 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:14,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:14,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:14,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:14,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:14,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:14,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:11:14,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:11:14,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:11:14,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:11:14,867 INFO L87 Difference]: Start difference. First operand 579 states and 908 transitions. Second operand 5 states. [2019-09-08 04:11:14,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:14,937 INFO L93 Difference]: Finished difference Result 1128 states and 1788 transitions. [2019-09-08 04:11:14,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:11:14,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-09-08 04:11:14,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:14,943 INFO L225 Difference]: With dead ends: 1128 [2019-09-08 04:11:14,943 INFO L226 Difference]: Without dead ends: 579 [2019-09-08 04:11:14,947 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 04:11:14,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-09-08 04:11:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-09-08 04:11:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-09-08 04:11:14,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 907 transitions. [2019-09-08 04:11:14,974 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 907 transitions. Word has length 148 [2019-09-08 04:11:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:14,975 INFO L475 AbstractCegarLoop]: Abstraction has 579 states and 907 transitions. [2019-09-08 04:11:14,975 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:11:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 907 transitions. [2019-09-08 04:11:14,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-09-08 04:11:14,980 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:14,980 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:14,981 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:14,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:14,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1647215267, now seen corresponding path program 1 times [2019-09-08 04:11:14,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:14,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:14,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:14,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:14,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-08 04:11:15,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:11:15,243 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:11:15,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:15,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 04:11:15,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:11:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-08 04:11:15,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:11:15,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-08 04:11:15,920 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 04:11:15,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 04:11:15,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-08 04:11:15,922 INFO L87 Difference]: Start difference. First operand 579 states and 907 transitions. Second operand 9 states. [2019-09-08 04:11:21,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:21,257 INFO L93 Difference]: Finished difference Result 3504 states and 5661 transitions. [2019-09-08 04:11:21,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-08 04:11:21,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 149 [2019-09-08 04:11:21,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:21,281 INFO L225 Difference]: With dead ends: 3504 [2019-09-08 04:11:21,281 INFO L226 Difference]: Without dead ends: 2959 [2019-09-08 04:11:21,287 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2019-09-08 04:11:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2019-09-08 04:11:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2833. [2019-09-08 04:11:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2019-09-08 04:11:21,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 4500 transitions. [2019-09-08 04:11:21,446 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 4500 transitions. Word has length 149 [2019-09-08 04:11:21,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:21,447 INFO L475 AbstractCegarLoop]: Abstraction has 2833 states and 4500 transitions. [2019-09-08 04:11:21,447 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 04:11:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 4500 transitions. [2019-09-08 04:11:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-09-08 04:11:21,452 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:21,453 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:21,453 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:21,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:21,454 INFO L82 PathProgramCache]: Analyzing trace with hash -12917173, now seen corresponding path program 1 times [2019-09-08 04:11:21,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:21,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:21,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:21,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:21,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:21,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:21,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:11:21,637 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:11:21,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:11:21,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:11:21,638 INFO L87 Difference]: Start difference. First operand 2833 states and 4500 transitions. Second operand 7 states. [2019-09-08 04:11:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:24,505 INFO L93 Difference]: Finished difference Result 8403 states and 13635 transitions. [2019-09-08 04:11:24,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:11:24,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2019-09-08 04:11:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:24,554 INFO L225 Difference]: With dead ends: 8403 [2019-09-08 04:11:24,555 INFO L226 Difference]: Without dead ends: 5604 [2019-09-08 04:11:24,577 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 04:11:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5604 states. [2019-09-08 04:11:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5604 to 5520. [2019-09-08 04:11:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5520 states. [2019-09-08 04:11:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5520 states to 5520 states and 8871 transitions. [2019-09-08 04:11:24,883 INFO L78 Accepts]: Start accepts. Automaton has 5520 states and 8871 transitions. Word has length 153 [2019-09-08 04:11:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:24,884 INFO L475 AbstractCegarLoop]: Abstraction has 5520 states and 8871 transitions. [2019-09-08 04:11:24,884 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:11:24,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5520 states and 8871 transitions. [2019-09-08 04:11:24,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-09-08 04:11:24,892 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:24,892 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:24,893 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:24,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:24,894 INFO L82 PathProgramCache]: Analyzing trace with hash -424316459, now seen corresponding path program 1 times [2019-09-08 04:11:24,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:24,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:24,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:24,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:24,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 04:11:25,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:11:25,140 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 04:11:25,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:11:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:25,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 3035 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 04:11:25,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:11:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-08 04:11:25,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:11:25,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2019-09-08 04:11:25,681 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 04:11:25,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 04:11:25,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-09-08 04:11:25,682 INFO L87 Difference]: Start difference. First operand 5520 states and 8871 transitions. Second operand 12 states. [2019-09-08 04:11:31,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:31,625 INFO L93 Difference]: Finished difference Result 18289 states and 30199 transitions. [2019-09-08 04:11:31,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-08 04:11:31,626 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 150 [2019-09-08 04:11:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:31,785 INFO L225 Difference]: With dead ends: 18289 [2019-09-08 04:11:31,785 INFO L226 Difference]: Without dead ends: 12803 [2019-09-08 04:11:31,843 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2019-09-08 04:11:31,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12803 states. [2019-09-08 04:11:32,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12803 to 8574. [2019-09-08 04:11:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8574 states. [2019-09-08 04:11:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8574 states to 8574 states and 13700 transitions. [2019-09-08 04:11:32,437 INFO L78 Accepts]: Start accepts. Automaton has 8574 states and 13700 transitions. Word has length 150 [2019-09-08 04:11:32,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:32,438 INFO L475 AbstractCegarLoop]: Abstraction has 8574 states and 13700 transitions. [2019-09-08 04:11:32,438 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 04:11:32,438 INFO L276 IsEmpty]: Start isEmpty. Operand 8574 states and 13700 transitions. [2019-09-08 04:11:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-09-08 04:11:32,442 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:32,442 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-09-08 04:11:32,443 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:32,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:32,443 INFO L82 PathProgramCache]: Analyzing trace with hash -961573269, now seen corresponding path program 1 times [2019-09-08 04:11:32,443 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:32,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:32,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:32,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:32,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 04:11:32,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:32,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:11:32,635 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:11:32,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:11:32,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:11:32,636 INFO L87 Difference]: Start difference. First operand 8574 states and 13700 transitions. Second operand 4 states. [2019-09-08 04:11:33,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:33,133 INFO L93 Difference]: Finished difference Result 16781 states and 27123 transitions. [2019-09-08 04:11:33,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:11:33,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2019-09-08 04:11:33,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:33,197 INFO L225 Difference]: With dead ends: 16781 [2019-09-08 04:11:33,197 INFO L226 Difference]: Without dead ends: 8229 [2019-09-08 04:11:33,233 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:11:33,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2019-09-08 04:11:33,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8171. [2019-09-08 04:11:33,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8171 states. [2019-09-08 04:11:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8171 states to 8171 states and 13035 transitions. [2019-09-08 04:11:33,710 INFO L78 Accepts]: Start accepts. Automaton has 8171 states and 13035 transitions. Word has length 153 [2019-09-08 04:11:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:33,711 INFO L475 AbstractCegarLoop]: Abstraction has 8171 states and 13035 transitions. [2019-09-08 04:11:33,711 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:11:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 8171 states and 13035 transitions. [2019-09-08 04:11:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-09-08 04:11:33,716 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:33,716 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1] [2019-09-08 04:11:33,716 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:33,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:33,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2070244592, now seen corresponding path program 1 times [2019-09-08 04:11:33,717 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:33,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:33,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:33,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:33,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-08 04:11:33,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:33,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:11:33,934 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:11:33,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:11:33,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:11:33,935 INFO L87 Difference]: Start difference. First operand 8171 states and 13035 transitions. Second operand 7 states. [2019-09-08 04:11:36,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:36,973 INFO L93 Difference]: Finished difference Result 24421 states and 39846 transitions. [2019-09-08 04:11:36,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:11:36,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2019-09-08 04:11:36,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:37,124 INFO L225 Difference]: With dead ends: 24421 [2019-09-08 04:11:37,124 INFO L226 Difference]: Without dead ends: 16284 [2019-09-08 04:11:37,165 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 04:11:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16284 states. [2019-09-08 04:11:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16284 to 16152. [2019-09-08 04:11:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16152 states. [2019-09-08 04:11:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16152 states to 16152 states and 26073 transitions. [2019-09-08 04:11:37,918 INFO L78 Accepts]: Start accepts. Automaton has 16152 states and 26073 transitions. Word has length 161 [2019-09-08 04:11:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:37,918 INFO L475 AbstractCegarLoop]: Abstraction has 16152 states and 26073 transitions. [2019-09-08 04:11:37,919 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:11:37,919 INFO L276 IsEmpty]: Start isEmpty. Operand 16152 states and 26073 transitions. [2019-09-08 04:11:37,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-09-08 04:11:37,923 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:37,924 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1] [2019-09-08 04:11:37,924 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:37,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:37,924 INFO L82 PathProgramCache]: Analyzing trace with hash -529036724, now seen corresponding path program 1 times [2019-09-08 04:11:37,925 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:37,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:37,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:37,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:37,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-08 04:11:38,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:38,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:11:38,076 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:11:38,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:11:38,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:11:38,076 INFO L87 Difference]: Start difference. First operand 16152 states and 26073 transitions. Second operand 4 states. [2019-09-08 04:11:38,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:38,889 INFO L93 Difference]: Finished difference Result 31991 states and 52307 transitions. [2019-09-08 04:11:38,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:11:38,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2019-09-08 04:11:38,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:39,054 INFO L225 Difference]: With dead ends: 31991 [2019-09-08 04:11:39,054 INFO L226 Difference]: Without dead ends: 15861 [2019-09-08 04:11:39,146 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:11:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15861 states. [2019-09-08 04:11:39,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15861 to 15777. [2019-09-08 04:11:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15777 states. [2019-09-08 04:11:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15777 states to 15777 states and 25417 transitions. [2019-09-08 04:11:39,841 INFO L78 Accepts]: Start accepts. Automaton has 15777 states and 25417 transitions. Word has length 162 [2019-09-08 04:11:39,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:39,842 INFO L475 AbstractCegarLoop]: Abstraction has 15777 states and 25417 transitions. [2019-09-08 04:11:39,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:11:39,842 INFO L276 IsEmpty]: Start isEmpty. Operand 15777 states and 25417 transitions. [2019-09-08 04:11:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-09-08 04:11:39,847 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:39,847 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:11:39,848 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:39,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:39,848 INFO L82 PathProgramCache]: Analyzing trace with hash 290171593, now seen corresponding path program 1 times [2019-09-08 04:11:39,848 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:39,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:39,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:39,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:39,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-09-08 04:11:40,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:40,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:11:40,009 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:11:40,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:11:40,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:11:40,009 INFO L87 Difference]: Start difference. First operand 15777 states and 25417 transitions. Second operand 7 states. [2019-09-08 04:11:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:43,272 INFO L93 Difference]: Finished difference Result 47371 states and 78373 transitions. [2019-09-08 04:11:43,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:11:43,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2019-09-08 04:11:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:43,550 INFO L225 Difference]: With dead ends: 47371 [2019-09-08 04:11:43,551 INFO L226 Difference]: Without dead ends: 31628 [2019-09-08 04:11:43,650 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 04:11:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31628 states. [2019-09-08 04:11:45,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31628 to 31428. [2019-09-08 04:11:45,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31428 states. [2019-09-08 04:11:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31428 states to 31428 states and 51563 transitions. [2019-09-08 04:11:46,093 INFO L78 Accepts]: Start accepts. Automaton has 31428 states and 51563 transitions. Word has length 171 [2019-09-08 04:11:46,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:46,094 INFO L475 AbstractCegarLoop]: Abstraction has 31428 states and 51563 transitions. [2019-09-08 04:11:46,094 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:11:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 31428 states and 51563 transitions. [2019-09-08 04:11:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-09-08 04:11:46,099 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:46,099 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:11:46,099 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:46,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:46,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1419990053, now seen corresponding path program 1 times [2019-09-08 04:11:46,100 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:46,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:46,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:46,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:46,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-09-08 04:11:46,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:46,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:11:46,221 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:11:46,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:11:46,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:11:46,222 INFO L87 Difference]: Start difference. First operand 31428 states and 51563 transitions. Second operand 4 states. [2019-09-08 04:11:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:47,460 INFO L93 Difference]: Finished difference Result 62601 states and 104422 transitions. [2019-09-08 04:11:47,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:11:47,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-09-08 04:11:47,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:47,676 INFO L225 Difference]: With dead ends: 62601 [2019-09-08 04:11:47,676 INFO L226 Difference]: Without dead ends: 31195 [2019-09-08 04:11:47,818 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:11:47,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31195 states. [2019-09-08 04:11:50,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31195 to 31063. [2019-09-08 04:11:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31063 states. [2019-09-08 04:11:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31063 states to 31063 states and 50860 transitions. [2019-09-08 04:11:50,783 INFO L78 Accepts]: Start accepts. Automaton has 31063 states and 50860 transitions. Word has length 172 [2019-09-08 04:11:50,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:50,784 INFO L475 AbstractCegarLoop]: Abstraction has 31063 states and 50860 transitions. [2019-09-08 04:11:50,784 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:11:50,784 INFO L276 IsEmpty]: Start isEmpty. Operand 31063 states and 50860 transitions. [2019-09-08 04:11:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-09-08 04:11:50,789 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:50,790 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:11:50,790 INFO L418 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:50,791 INFO L82 PathProgramCache]: Analyzing trace with hash 251987824, now seen corresponding path program 1 times [2019-09-08 04:11:50,791 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:50,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:50,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:50,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:50,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-09-08 04:11:50,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:50,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:11:50,959 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:11:50,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:11:50,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:11:50,960 INFO L87 Difference]: Start difference. First operand 31063 states and 50860 transitions. Second operand 7 states. [2019-09-08 04:11:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:11:55,107 INFO L93 Difference]: Finished difference Result 93425 states and 158221 transitions. [2019-09-08 04:11:55,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:11:55,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2019-09-08 04:11:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:11:55,546 INFO L225 Difference]: With dead ends: 93425 [2019-09-08 04:11:55,546 INFO L226 Difference]: Without dead ends: 62396 [2019-09-08 04:11:55,717 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 04:11:55,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62396 states. [2019-09-08 04:11:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62396 to 62080. [2019-09-08 04:11:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62080 states. [2019-09-08 04:11:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62080 states to 62080 states and 104495 transitions. [2019-09-08 04:11:59,569 INFO L78 Accepts]: Start accepts. Automaton has 62080 states and 104495 transitions. Word has length 182 [2019-09-08 04:11:59,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:11:59,569 INFO L475 AbstractCegarLoop]: Abstraction has 62080 states and 104495 transitions. [2019-09-08 04:11:59,570 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:11:59,570 INFO L276 IsEmpty]: Start isEmpty. Operand 62080 states and 104495 transitions. [2019-09-08 04:11:59,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-09-08 04:11:59,573 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:11:59,574 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:11:59,574 INFO L418 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:11:59,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:11:59,574 INFO L82 PathProgramCache]: Analyzing trace with hash 148015196, now seen corresponding path program 1 times [2019-09-08 04:11:59,575 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:11:59,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:11:59,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:59,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:11:59,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:11:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:11:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-09-08 04:11:59,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:11:59,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:11:59,699 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:11:59,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:11:59,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:11:59,699 INFO L87 Difference]: Start difference. First operand 62080 states and 104495 transitions. Second operand 4 states. [2019-09-08 04:12:01,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:12:01,983 INFO L93 Difference]: Finished difference Result 123296 states and 212295 transitions. [2019-09-08 04:12:01,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:12:01,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2019-09-08 04:12:01,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:12:02,356 INFO L225 Difference]: With dead ends: 123296 [2019-09-08 04:12:02,356 INFO L226 Difference]: Without dead ends: 61232 [2019-09-08 04:12:02,608 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:12:02,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61232 states. [2019-09-08 04:12:06,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61232 to 60964. [2019-09-08 04:12:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60964 states. [2019-09-08 04:12:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60964 states to 60964 states and 102248 transitions. [2019-09-08 04:12:07,064 INFO L78 Accepts]: Start accepts. Automaton has 60964 states and 102248 transitions. Word has length 183 [2019-09-08 04:12:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:12:07,065 INFO L475 AbstractCegarLoop]: Abstraction has 60964 states and 102248 transitions. [2019-09-08 04:12:07,065 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:12:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 60964 states and 102248 transitions. [2019-09-08 04:12:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2019-09-08 04:12:07,094 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:12:07,095 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:12:07,095 INFO L418 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:12:07,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:12:07,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1180382741, now seen corresponding path program 1 times [2019-09-08 04:12:07,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:12:07,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:12:07,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:12:07,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:12:07,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:12:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:12:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 23 proven. 43 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2019-09-08 04:12:07,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:12:07,429 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 04:12:07,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:12:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:12:08,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 4428 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 04:12:08,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:12:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 04:12:08,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:12:08,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-09-08 04:12:08,637 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 04:12:08,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 04:12:08,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-09-08 04:12:08,638 INFO L87 Difference]: Start difference. First operand 60964 states and 102248 transitions. Second operand 15 states. [2019-09-08 04:12:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:12:12,708 INFO L93 Difference]: Finished difference Result 122338 states and 213457 transitions. [2019-09-08 04:12:12,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 04:12:12,709 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 433 [2019-09-08 04:12:12,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:12:13,132 INFO L225 Difference]: With dead ends: 122338 [2019-09-08 04:12:13,132 INFO L226 Difference]: Without dead ends: 61408 [2019-09-08 04:12:13,398 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 433 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2019-09-08 04:12:13,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61408 states. [2019-09-08 04:12:18,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61408 to 61408. [2019-09-08 04:12:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61408 states. [2019-09-08 04:12:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61408 states to 61408 states and 102501 transitions. [2019-09-08 04:12:18,788 INFO L78 Accepts]: Start accepts. Automaton has 61408 states and 102501 transitions. Word has length 433 [2019-09-08 04:12:18,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:12:18,789 INFO L475 AbstractCegarLoop]: Abstraction has 61408 states and 102501 transitions. [2019-09-08 04:12:18,789 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 04:12:18,789 INFO L276 IsEmpty]: Start isEmpty. Operand 61408 states and 102501 transitions. [2019-09-08 04:12:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2019-09-08 04:12:18,821 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:12:18,821 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:12:18,821 INFO L418 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:12:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:12:18,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1631405556, now seen corresponding path program 1 times [2019-09-08 04:12:18,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:12:18,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:12:18,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:12:18,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:12:18,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:12:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:12:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2019-09-08 04:12:19,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:12:19,113 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:12:19,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:12:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:12:19,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 4433 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 04:12:19,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:12:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 04:12:20,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:12:20,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-09-08 04:12:20,002 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 04:12:20,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 04:12:20,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-09-08 04:12:20,009 INFO L87 Difference]: Start difference. First operand 61408 states and 102501 transitions. Second operand 15 states. [2019-09-08 04:12:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:12:23,738 INFO L93 Difference]: Finished difference Result 123369 states and 213786 transitions. [2019-09-08 04:12:23,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 04:12:23,747 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 438 [2019-09-08 04:12:23,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:12:24,147 INFO L225 Difference]: With dead ends: 123369 [2019-09-08 04:12:24,147 INFO L226 Difference]: Without dead ends: 61995 [2019-09-08 04:12:24,426 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 439 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2019-09-08 04:12:24,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61995 states. [2019-09-08 04:12:26,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61995 to 61995. [2019-09-08 04:12:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61995 states. [2019-09-08 04:12:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61995 states to 61995 states and 102993 transitions. [2019-09-08 04:12:27,019 INFO L78 Accepts]: Start accepts. Automaton has 61995 states and 102993 transitions. Word has length 438 [2019-09-08 04:12:27,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:12:27,020 INFO L475 AbstractCegarLoop]: Abstraction has 61995 states and 102993 transitions. [2019-09-08 04:12:27,020 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 04:12:27,020 INFO L276 IsEmpty]: Start isEmpty. Operand 61995 states and 102993 transitions. [2019-09-08 04:12:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2019-09-08 04:12:27,043 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:12:27,044 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:12:27,044 INFO L418 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:12:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:12:27,044 INFO L82 PathProgramCache]: Analyzing trace with hash -528224655, now seen corresponding path program 1 times [2019-09-08 04:12:27,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:12:27,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:12:27,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:12:27,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:12:27,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:12:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:12:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 23 proven. 51 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2019-09-08 04:12:27,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:12:27,425 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 04:12:27,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:12:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:12:28,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 4438 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 04:12:28,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:12:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2019-09-08 04:12:28,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:12:28,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-09-08 04:12:28,274 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 04:12:28,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 04:12:28,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-09-08 04:12:28,275 INFO L87 Difference]: Start difference. First operand 61995 states and 102993 transitions. Second operand 15 states. [2019-09-08 04:12:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:12:35,829 INFO L93 Difference]: Finished difference Result 124654 states and 214673 transitions. [2019-09-08 04:12:35,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 04:12:35,830 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 443 [2019-09-08 04:12:35,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:12:36,514 INFO L225 Difference]: With dead ends: 124654 [2019-09-08 04:12:36,514 INFO L226 Difference]: Without dead ends: 62693 [2019-09-08 04:12:37,013 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2019-09-08 04:12:37,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62693 states. [2019-09-08 04:12:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62693 to 62693. [2019-09-08 04:12:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62693 states. [2019-09-08 04:12:39,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62693 states to 62693 states and 103644 transitions. [2019-09-08 04:12:39,553 INFO L78 Accepts]: Start accepts. Automaton has 62693 states and 103644 transitions. Word has length 443 [2019-09-08 04:12:39,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:12:39,554 INFO L475 AbstractCegarLoop]: Abstraction has 62693 states and 103644 transitions. [2019-09-08 04:12:39,554 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 04:12:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 62693 states and 103644 transitions. [2019-09-08 04:12:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2019-09-08 04:12:39,578 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:12:39,579 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:12:39,579 INFO L418 AbstractCegarLoop]: === Iteration 24 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:12:39,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:12:39,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1963905064, now seen corresponding path program 1 times [2019-09-08 04:12:39,580 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:12:39,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:12:39,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:12:39,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:12:39,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:12:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:12:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2019-09-08 04:12:40,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:12:40,033 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:12:40,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:12:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:12:40,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 4443 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 04:12:40,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:12:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 04:12:40,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:12:40,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-09-08 04:12:40,915 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 04:12:40,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 04:12:40,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-09-08 04:12:40,916 INFO L87 Difference]: Start difference. First operand 62693 states and 103644 transitions. Second operand 15 states. [2019-09-08 04:12:45,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:12:45,140 INFO L93 Difference]: Finished difference Result 126153 states and 215934 transitions. [2019-09-08 04:12:45,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 04:12:45,141 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 448 [2019-09-08 04:12:45,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:12:45,538 INFO L225 Difference]: With dead ends: 126153 [2019-09-08 04:12:45,539 INFO L226 Difference]: Without dead ends: 63494 [2019-09-08 04:12:45,817 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 449 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2019-09-08 04:12:45,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63494 states. [2019-09-08 04:12:50,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63494 to 63494. [2019-09-08 04:12:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63494 states. [2019-09-08 04:12:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63494 states to 63494 states and 104422 transitions. [2019-09-08 04:12:51,264 INFO L78 Accepts]: Start accepts. Automaton has 63494 states and 104422 transitions. Word has length 448 [2019-09-08 04:12:51,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:12:51,265 INFO L475 AbstractCegarLoop]: Abstraction has 63494 states and 104422 transitions. [2019-09-08 04:12:51,265 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 04:12:51,265 INFO L276 IsEmpty]: Start isEmpty. Operand 63494 states and 104422 transitions. [2019-09-08 04:12:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2019-09-08 04:12:51,282 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:12:51,283 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:12:51,283 INFO L418 AbstractCegarLoop]: === Iteration 25 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:12:51,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:12:51,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1054025421, now seen corresponding path program 1 times [2019-09-08 04:12:51,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:12:51,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:12:51,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:12:51,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:12:51,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:12:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:12:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2019-09-08 04:12:51,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:12:51,616 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:12:51,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:12:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:12:52,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 4448 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-08 04:12:52,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:12:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 264 proven. 20 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2019-09-08 04:12:52,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 04:12:52,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-09-08 04:12:52,885 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-08 04:12:52,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-08 04:12:52,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2019-09-08 04:12:52,886 INFO L87 Difference]: Start difference. First operand 63494 states and 104422 transitions. Second operand 19 states. [2019-09-08 04:13:50,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:13:50,807 INFO L93 Difference]: Finished difference Result 395384 states and 808531 transitions. [2019-09-08 04:13:50,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2019-09-08 04:13:50,808 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 453 [2019-09-08 04:13:50,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:13:53,267 INFO L225 Difference]: With dead ends: 395384 [2019-09-08 04:13:53,267 INFO L226 Difference]: Without dead ends: 314184 [2019-09-08 04:13:54,777 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2513 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1141, Invalid=6515, Unknown=0, NotChecked=0, Total=7656 [2019-09-08 04:13:54,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314184 states. [2019-09-08 04:14:13,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314184 to 295173. [2019-09-08 04:14:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295173 states. [2019-09-08 04:14:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295173 states to 295173 states and 508724 transitions. [2019-09-08 04:14:26,241 INFO L78 Accepts]: Start accepts. Automaton has 295173 states and 508724 transitions. Word has length 453 [2019-09-08 04:14:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:14:26,242 INFO L475 AbstractCegarLoop]: Abstraction has 295173 states and 508724 transitions. [2019-09-08 04:14:26,242 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-08 04:14:26,242 INFO L276 IsEmpty]: Start isEmpty. Operand 295173 states and 508724 transitions. [2019-09-08 04:14:26,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2019-09-08 04:14:26,253 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:14:26,254 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:14:26,254 INFO L418 AbstractCegarLoop]: === Iteration 26 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:14:26,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:14:26,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1856386569, now seen corresponding path program 1 times [2019-09-08 04:14:26,254 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:14:26,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:14:26,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:14:26,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:14:26,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:14:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:14:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 23 proven. 42 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2019-09-08 04:14:26,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:14:26,679 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 04:14:26,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:14:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:14:27,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 4488 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-08 04:14:27,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:14:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2019-09-08 04:14:34,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 04:14:34,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2019-09-08 04:14:34,577 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 04:14:34,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 04:14:34,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2019-09-08 04:14:34,578 INFO L87 Difference]: Start difference. First operand 295173 states and 508724 transitions. Second operand 24 states. [2019-09-08 04:16:02,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:02,417 INFO L93 Difference]: Finished difference Result 944684 states and 1795074 transitions. [2019-09-08 04:16:02,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-08 04:16:02,417 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 471 [2019-09-08 04:16:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:09,202 INFO L225 Difference]: With dead ends: 944684 [2019-09-08 04:16:09,202 INFO L226 Difference]: Without dead ends: 649545 [2019-09-08 04:16:16,454 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=214, Invalid=1346, Unknown=0, NotChecked=0, Total=1560 [2019-09-08 04:16:18,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649545 states.