/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:43:39,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:43:39,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:43:39,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:43:39,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:43:39,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:43:39,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:43:39,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:43:39,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:43:39,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:43:39,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:43:39,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:43:39,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:43:39,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:43:39,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:43:39,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:43:39,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:43:39,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:43:39,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:43:39,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:43:39,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:43:39,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:43:39,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:43:39,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:43:39,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:43:39,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:43:39,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:43:39,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:43:39,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:43:39,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:43:39,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:43:39,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:43:39,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:43:39,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:43:39,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:43:39,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:43:39,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:43:39,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:43:39,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:43:39,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:43:39,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:43:39,725 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 [2019-11-07 00:43:39,745 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:43:39,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:43:39,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:43:39,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:43:39,749 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:43:39,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:43:39,749 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:43:39,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:43:39,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:43:39,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:43:39,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:43:39,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:43:39,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:43:39,752 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:43:39,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:43:39,752 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:43:39,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:43:39,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:43:39,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:43:39,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:43:39,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:43:39,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:43:39,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:43:39,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:43:39,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:43:39,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:43:39,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:43:39,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:43:39,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:43:40,045 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:43:40,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:43:40,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:43:40,065 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:43:40,065 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:43:40,066 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-11-07 00:43:40,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/059077245/84a0e1db2d764206ac02136c1f4f7f68/FLAG666924dcd [2019-11-07 00:43:40,722 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:43:40,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-11-07 00:43:40,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/059077245/84a0e1db2d764206ac02136c1f4f7f68/FLAG666924dcd [2019-11-07 00:43:40,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/059077245/84a0e1db2d764206ac02136c1f4f7f68 [2019-11-07 00:43:40,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:43:40,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:43:40,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:43:40,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:43:40,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:43:40,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:40" (1/1) ... [2019-11-07 00:43:40,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1954d7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:40, skipping insertion in model container [2019-11-07 00:43:40,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:40" (1/1) ... [2019-11-07 00:43:41,007 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:43:41,187 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:43:42,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:43:42,402 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:43:42,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:43:42,635 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:43:42,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:42 WrapperNode [2019-11-07 00:43:42,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:43:42,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:43:42,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:43:42,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:43:42,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:42" (1/1) ... [2019-11-07 00:43:42,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:42" (1/1) ... [2019-11-07 00:43:42,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:42" (1/1) ... [2019-11-07 00:43:42,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:42" (1/1) ... [2019-11-07 00:43:42,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:42" (1/1) ... [2019-11-07 00:43:42,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:42" (1/1) ... [2019-11-07 00:43:42,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:42" (1/1) ... [2019-11-07 00:43:42,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:43:42,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:43:42,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:43:42,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:43:42,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:42" (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 [2019-11-07 00:43:42,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:43:42,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:43:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:43:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:43:42,910 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:43:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:43:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:43:42,911 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:43:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:43:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:43:42,912 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:43:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:43:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:43:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:43:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:43:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:43:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:43:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:43:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:43:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:43:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:43:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:43:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:43:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:43:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:43:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:43:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:43:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:43:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:43:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:43:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:43:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:43:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:43:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:43:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:43:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:43:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:43:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:43:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:43:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:43:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:43:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 00:43:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:43:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:43:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:43:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 00:43:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:43:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:43:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:43:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:43:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:43:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:43:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:43:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:43:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:43:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:43:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:43:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:43:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:43:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:43:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:43:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:43:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:43:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:43:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:43:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:43:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:43:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:43:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:43:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:43:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:43:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:43:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:43:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:43:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:43:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:43:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:43:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:43:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:43:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:43:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:43:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:43:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:43:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:43:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:43:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:43:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:43:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:43:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:43:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:43:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:43:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:43:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:43:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:43:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:43:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:43:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:43:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:43:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:43:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:43:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:43:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:43:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:43:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:43:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:43:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:43:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:43:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:43:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:43:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:43:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:43:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:43:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:43:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:43:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:43:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:43:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:43:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:43:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:43:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:43:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:43:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:43:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:43:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:43:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:43:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:43:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:43:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:43:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:43:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:43:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 00:43:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:43:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:43:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 00:43:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:43:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:43:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:43:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:43:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:43:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:43:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:43:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:43:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:43:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:43:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:43:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:43:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:43:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:43:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:43:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:43:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:43:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:43:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:43:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:43:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:43:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:43:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:43:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:43:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:43:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:43:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:43:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:43:42,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:43:45,171 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:43:45,172 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:43:45,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:45 BoogieIcfgContainer [2019-11-07 00:43:45,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:43:45,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:43:45,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:43:45,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:43:45,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:43:40" (1/3) ... [2019-11-07 00:43:45,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f0bd16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:45, skipping insertion in model container [2019-11-07 00:43:45,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:42" (2/3) ... [2019-11-07 00:43:45,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f0bd16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:45, skipping insertion in model container [2019-11-07 00:43:45,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:45" (3/3) ... [2019-11-07 00:43:45,181 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2019-11-07 00:43:45,191 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:43:45,200 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:43:45,212 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:43:45,245 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:43:45,246 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:43:45,246 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:43:45,246 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:43:45,246 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:43:45,246 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:43:45,246 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:43:45,246 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:43:45,282 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states. [2019-11-07 00:43:45,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 00:43:45,317 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:45,318 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:45,320 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:45,326 INFO L82 PathProgramCache]: Analyzing trace with hash -713058684, now seen corresponding path program 1 times [2019-11-07 00:43:45,336 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:45,337 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850035370] [2019-11-07 00:43:45,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:46,068 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850035370] [2019-11-07 00:43:46,069 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:46,069 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:46,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594326496] [2019-11-07 00:43:46,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:46,077 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:46,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:46,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:46,095 INFO L87 Difference]: Start difference. First operand 793 states. Second operand 7 states. [2019-11-07 00:43:46,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:46,434 INFO L93 Difference]: Finished difference Result 1265 states and 2048 transitions. [2019-11-07 00:43:46,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:46,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-11-07 00:43:46,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:46,476 INFO L225 Difference]: With dead ends: 1265 [2019-11-07 00:43:46,477 INFO L226 Difference]: Without dead ends: 641 [2019-11-07 00:43:46,490 INFO L630 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 [2019-11-07 00:43:46,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2019-11-07 00:43:46,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 639. [2019-11-07 00:43:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-11-07 00:43:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1019 transitions. [2019-11-07 00:43:46,658 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1019 transitions. Word has length 132 [2019-11-07 00:43:46,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:46,660 INFO L462 AbstractCegarLoop]: Abstraction has 639 states and 1019 transitions. [2019-11-07 00:43:46,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1019 transitions. [2019-11-07 00:43:46,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-07 00:43:46,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:46,674 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:46,678 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:46,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:46,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2033776308, now seen corresponding path program 1 times [2019-11-07 00:43:46,679 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:46,679 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955120223] [2019-11-07 00:43:46,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:46,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:46,975 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955120223] [2019-11-07 00:43:46,975 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:46,975 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:46,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606266276] [2019-11-07 00:43:46,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:46,979 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:46,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:46,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:46,980 INFO L87 Difference]: Start difference. First operand 639 states and 1019 transitions. Second operand 4 states. [2019-11-07 00:43:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:47,079 INFO L93 Difference]: Finished difference Result 1244 states and 2003 transitions. [2019-11-07 00:43:47,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:43:47,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2019-11-07 00:43:47,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:47,087 INFO L225 Difference]: With dead ends: 1244 [2019-11-07 00:43:47,087 INFO L226 Difference]: Without dead ends: 621 [2019-11-07 00:43:47,091 INFO L630 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 [2019-11-07 00:43:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-11-07 00:43:47,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-11-07 00:43:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-11-07 00:43:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 986 transitions. [2019-11-07 00:43:47,144 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 986 transitions. Word has length 133 [2019-11-07 00:43:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:47,146 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 986 transitions. [2019-11-07 00:43:47,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:43:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 986 transitions. [2019-11-07 00:43:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-07 00:43:47,153 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:47,157 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:47,157 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:47,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1652657134, now seen corresponding path program 1 times [2019-11-07 00:43:47,158 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:47,158 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992434814] [2019-11-07 00:43:47,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:47,400 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992434814] [2019-11-07 00:43:47,401 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:47,401 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:47,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171126021] [2019-11-07 00:43:47,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:47,402 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:47,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:47,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:47,403 INFO L87 Difference]: Start difference. First operand 621 states and 986 transitions. Second operand 7 states. [2019-11-07 00:43:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:47,503 INFO L93 Difference]: Finished difference Result 1213 states and 1945 transitions. [2019-11-07 00:43:47,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:47,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-11-07 00:43:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:47,509 INFO L225 Difference]: With dead ends: 1213 [2019-11-07 00:43:47,509 INFO L226 Difference]: Without dead ends: 615 [2019-11-07 00:43:47,513 INFO L630 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 [2019-11-07 00:43:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-11-07 00:43:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-11-07 00:43:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-11-07 00:43:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 973 transitions. [2019-11-07 00:43:47,541 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 973 transitions. Word has length 133 [2019-11-07 00:43:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:47,542 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 973 transitions. [2019-11-07 00:43:47,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:47,542 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 973 transitions. [2019-11-07 00:43:47,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-07 00:43:47,546 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:47,546 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:47,546 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:47,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1402803232, now seen corresponding path program 1 times [2019-11-07 00:43:47,547 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:47,547 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397694551] [2019-11-07 00:43:47,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:47,789 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397694551] [2019-11-07 00:43:47,790 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:47,790 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:47,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341147514] [2019-11-07 00:43:47,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:47,791 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:47,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:47,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:47,792 INFO L87 Difference]: Start difference. First operand 615 states and 973 transitions. Second operand 7 states. [2019-11-07 00:43:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:47,900 INFO L93 Difference]: Finished difference Result 1201 states and 1919 transitions. [2019-11-07 00:43:47,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:47,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-11-07 00:43:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:47,909 INFO L225 Difference]: With dead ends: 1201 [2019-11-07 00:43:47,909 INFO L226 Difference]: Without dead ends: 609 [2019-11-07 00:43:47,915 INFO L630 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 [2019-11-07 00:43:47,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-11-07 00:43:47,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2019-11-07 00:43:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2019-11-07 00:43:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 960 transitions. [2019-11-07 00:43:47,945 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 960 transitions. Word has length 134 [2019-11-07 00:43:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:47,946 INFO L462 AbstractCegarLoop]: Abstraction has 609 states and 960 transitions. [2019-11-07 00:43:47,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 960 transitions. [2019-11-07 00:43:47,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-07 00:43:47,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:47,950 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:47,950 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:47,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1674666634, now seen corresponding path program 1 times [2019-11-07 00:43:47,952 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:47,953 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144670053] [2019-11-07 00:43:47,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:48,171 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144670053] [2019-11-07 00:43:48,172 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:48,172 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:48,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680343165] [2019-11-07 00:43:48,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:48,173 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:48,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:48,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:48,174 INFO L87 Difference]: Start difference. First operand 609 states and 960 transitions. Second operand 7 states. [2019-11-07 00:43:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:48,271 INFO L93 Difference]: Finished difference Result 1189 states and 1893 transitions. [2019-11-07 00:43:48,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:48,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-11-07 00:43:48,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:48,332 INFO L225 Difference]: With dead ends: 1189 [2019-11-07 00:43:48,333 INFO L226 Difference]: Without dead ends: 603 [2019-11-07 00:43:48,337 INFO L630 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 [2019-11-07 00:43:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-11-07 00:43:48,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-11-07 00:43:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-11-07 00:43:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 947 transitions. [2019-11-07 00:43:48,360 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 947 transitions. Word has length 135 [2019-11-07 00:43:48,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:48,360 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 947 transitions. [2019-11-07 00:43:48,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 947 transitions. [2019-11-07 00:43:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-07 00:43:48,365 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:48,365 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:48,365 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:48,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1533378921, now seen corresponding path program 1 times [2019-11-07 00:43:48,366 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:48,366 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847911199] [2019-11-07 00:43:48,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:48,531 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847911199] [2019-11-07 00:43:48,531 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:48,531 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:48,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104951402] [2019-11-07 00:43:48,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:48,532 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:48,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:48,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:48,533 INFO L87 Difference]: Start difference. First operand 603 states and 947 transitions. Second operand 7 states. [2019-11-07 00:43:48,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:48,633 INFO L93 Difference]: Finished difference Result 1177 states and 1867 transitions. [2019-11-07 00:43:48,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:48,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-11-07 00:43:48,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:48,640 INFO L225 Difference]: With dead ends: 1177 [2019-11-07 00:43:48,641 INFO L226 Difference]: Without dead ends: 603 [2019-11-07 00:43:48,645 INFO L630 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 [2019-11-07 00:43:48,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-11-07 00:43:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-11-07 00:43:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-11-07 00:43:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 946 transitions. [2019-11-07 00:43:48,679 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 946 transitions. Word has length 135 [2019-11-07 00:43:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:48,680 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 946 transitions. [2019-11-07 00:43:48,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 946 transitions. [2019-11-07 00:43:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-07 00:43:48,684 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:48,685 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:48,685 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:48,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:48,685 INFO L82 PathProgramCache]: Analyzing trace with hash 939897276, now seen corresponding path program 1 times [2019-11-07 00:43:48,686 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:48,686 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376552181] [2019-11-07 00:43:48,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:48,885 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376552181] [2019-11-07 00:43:48,886 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:48,886 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:48,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556436370] [2019-11-07 00:43:48,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:48,887 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:48,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:48,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:48,888 INFO L87 Difference]: Start difference. First operand 603 states and 946 transitions. Second operand 5 states. [2019-11-07 00:43:48,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:48,996 INFO L93 Difference]: Finished difference Result 1176 states and 1864 transitions. [2019-11-07 00:43:48,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:48,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2019-11-07 00:43:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:49,005 INFO L225 Difference]: With dead ends: 1176 [2019-11-07 00:43:49,006 INFO L226 Difference]: Without dead ends: 603 [2019-11-07 00:43:49,011 INFO L630 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 [2019-11-07 00:43:49,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-11-07 00:43:49,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-11-07 00:43:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-11-07 00:43:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 945 transitions. [2019-11-07 00:43:49,044 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 945 transitions. Word has length 136 [2019-11-07 00:43:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:49,046 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 945 transitions. [2019-11-07 00:43:49,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 945 transitions. [2019-11-07 00:43:49,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-11-07 00:43:49,055 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:49,055 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:49,056 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:49,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:49,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1962554060, now seen corresponding path program 1 times [2019-11-07 00:43:49,057 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:49,057 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057840508] [2019-11-07 00:43:49,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:49,362 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057840508] [2019-11-07 00:43:49,362 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:49,362 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:49,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2393279] [2019-11-07 00:43:49,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:49,363 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:49,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:49,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:49,365 INFO L87 Difference]: Start difference. First operand 603 states and 945 transitions. Second operand 5 states. [2019-11-07 00:43:49,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:49,444 INFO L93 Difference]: Finished difference Result 1176 states and 1862 transitions. [2019-11-07 00:43:49,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:49,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2019-11-07 00:43:49,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:49,452 INFO L225 Difference]: With dead ends: 1176 [2019-11-07 00:43:49,452 INFO L226 Difference]: Without dead ends: 603 [2019-11-07 00:43:49,456 INFO L630 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 [2019-11-07 00:43:49,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-11-07 00:43:49,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-11-07 00:43:49,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-11-07 00:43:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 944 transitions. [2019-11-07 00:43:49,483 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 944 transitions. Word has length 137 [2019-11-07 00:43:49,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:49,484 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 944 transitions. [2019-11-07 00:43:49,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:49,484 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 944 transitions. [2019-11-07 00:43:49,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-11-07 00:43:49,488 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:49,488 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:49,488 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:49,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:49,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1062439167, now seen corresponding path program 1 times [2019-11-07 00:43:49,489 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:49,489 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988600525] [2019-11-07 00:43:49,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:49,647 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988600525] [2019-11-07 00:43:49,648 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:49,649 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:49,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185220193] [2019-11-07 00:43:49,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:49,650 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:49,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:49,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:49,650 INFO L87 Difference]: Start difference. First operand 603 states and 944 transitions. Second operand 5 states. [2019-11-07 00:43:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:49,725 INFO L93 Difference]: Finished difference Result 1176 states and 1860 transitions. [2019-11-07 00:43:49,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:49,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-11-07 00:43:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:49,734 INFO L225 Difference]: With dead ends: 1176 [2019-11-07 00:43:49,735 INFO L226 Difference]: Without dead ends: 603 [2019-11-07 00:43:49,738 INFO L630 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 [2019-11-07 00:43:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-11-07 00:43:49,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-11-07 00:43:49,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-11-07 00:43:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 943 transitions. [2019-11-07 00:43:49,772 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 943 transitions. Word has length 138 [2019-11-07 00:43:49,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:49,772 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 943 transitions. [2019-11-07 00:43:49,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 943 transitions. [2019-11-07 00:43:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-07 00:43:49,778 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:49,778 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:49,778 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:49,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1753111833, now seen corresponding path program 1 times [2019-11-07 00:43:49,779 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:49,779 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806029366] [2019-11-07 00:43:49,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:50,010 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806029366] [2019-11-07 00:43:50,011 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:50,011 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:50,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141287728] [2019-11-07 00:43:50,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:50,012 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:50,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:50,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:50,012 INFO L87 Difference]: Start difference. First operand 603 states and 943 transitions. Second operand 5 states. [2019-11-07 00:43:50,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:50,071 INFO L93 Difference]: Finished difference Result 1176 states and 1858 transitions. [2019-11-07 00:43:50,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:50,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-11-07 00:43:50,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:50,076 INFO L225 Difference]: With dead ends: 1176 [2019-11-07 00:43:50,077 INFO L226 Difference]: Without dead ends: 603 [2019-11-07 00:43:50,080 INFO L630 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 [2019-11-07 00:43:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-11-07 00:43:50,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-11-07 00:43:50,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-11-07 00:43:50,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 942 transitions. [2019-11-07 00:43:50,102 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 942 transitions. Word has length 139 [2019-11-07 00:43:50,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:50,103 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 942 transitions. [2019-11-07 00:43:50,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:50,103 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 942 transitions. [2019-11-07 00:43:50,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-07 00:43:50,107 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:50,107 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:50,107 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:50,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:50,108 INFO L82 PathProgramCache]: Analyzing trace with hash -477327290, now seen corresponding path program 1 times [2019-11-07 00:43:50,108 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:50,108 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524678517] [2019-11-07 00:43:50,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 00:43:50,300 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524678517] [2019-11-07 00:43:50,300 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396524499] [2019-11-07 00:43:50,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:50,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:43:50,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:51,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:51,034 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:51,179 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:51,179 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 00:43:51,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107851413] [2019-11-07 00:43:51,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:43:51,181 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:51,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:43:51,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:43:51,181 INFO L87 Difference]: Start difference. First operand 603 states and 942 transitions. Second operand 3 states. [2019-11-07 00:43:51,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:51,274 INFO L93 Difference]: Finished difference Result 1688 states and 2686 transitions. [2019-11-07 00:43:51,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:43:51,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2019-11-07 00:43:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:51,286 INFO L225 Difference]: With dead ends: 1688 [2019-11-07 00:43:51,286 INFO L226 Difference]: Without dead ends: 1119 [2019-11-07 00:43:51,290 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:43:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2019-11-07 00:43:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1106. [2019-11-07 00:43:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2019-11-07 00:43:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1747 transitions. [2019-11-07 00:43:51,353 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1747 transitions. Word has length 140 [2019-11-07 00:43:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:51,357 INFO L462 AbstractCegarLoop]: Abstraction has 1106 states and 1747 transitions. [2019-11-07 00:43:51,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:43:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1747 transitions. [2019-11-07 00:43:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-07 00:43:51,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:51,364 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:51,573 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:51,573 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:51,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1124187117, now seen corresponding path program 1 times [2019-11-07 00:43:51,574 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:51,574 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936949233] [2019-11-07 00:43:51,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:51,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 00:43:51,771 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936949233] [2019-11-07 00:43:51,772 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317850245] [2019-11-07 00:43:51,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:52,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:43:52,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:52,453 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:43:52,570 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:52,570 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 00:43:52,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887717636] [2019-11-07 00:43:52,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:43:52,572 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:52,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:43:52,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:43:52,572 INFO L87 Difference]: Start difference. First operand 1106 states and 1747 transitions. Second operand 3 states. [2019-11-07 00:43:52,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:52,666 INFO L93 Difference]: Finished difference Result 2694 states and 4298 transitions. [2019-11-07 00:43:52,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:43:52,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2019-11-07 00:43:52,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:52,680 INFO L225 Difference]: With dead ends: 2694 [2019-11-07 00:43:52,680 INFO L226 Difference]: Without dead ends: 1622 [2019-11-07 00:43:52,687 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:43:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2019-11-07 00:43:52,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1573. [2019-11-07 00:43:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2019-11-07 00:43:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2505 transitions. [2019-11-07 00:43:52,761 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2505 transitions. Word has length 141 [2019-11-07 00:43:52,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:52,761 INFO L462 AbstractCegarLoop]: Abstraction has 1573 states and 2505 transitions. [2019-11-07 00:43:52,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:43:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2505 transitions. [2019-11-07 00:43:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-07 00:43:52,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:52,771 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:52,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:52,978 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:52,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:52,978 INFO L82 PathProgramCache]: Analyzing trace with hash 925611022, now seen corresponding path program 1 times [2019-11-07 00:43:52,979 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:52,979 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941610344] [2019-11-07 00:43:52,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 00:43:53,154 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941610344] [2019-11-07 00:43:53,154 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902005490] [2019-11-07 00:43:53,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:53,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:43:54,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 00:43:54,070 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 00:43:54,213 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:54,213 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 10 [2019-11-07 00:43:54,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915098836] [2019-11-07 00:43:54,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:54,217 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:54,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:54,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:43:54,218 INFO L87 Difference]: Start difference. First operand 1573 states and 2505 transitions. Second operand 5 states. [2019-11-07 00:43:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:56,295 INFO L93 Difference]: Finished difference Result 7246 states and 11761 transitions. [2019-11-07 00:43:56,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:56,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-11-07 00:43:56,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:56,345 INFO L225 Difference]: With dead ends: 7246 [2019-11-07 00:43:56,346 INFO L226 Difference]: Without dead ends: 5707 [2019-11-07 00:43:56,362 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:43:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2019-11-07 00:43:56,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5587. [2019-11-07 00:43:56,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5587 states. [2019-11-07 00:43:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 8898 transitions. [2019-11-07 00:43:56,668 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 8898 transitions. Word has length 143 [2019-11-07 00:43:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:56,670 INFO L462 AbstractCegarLoop]: Abstraction has 5587 states and 8898 transitions. [2019-11-07 00:43:56,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 8898 transitions. [2019-11-07 00:43:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-07 00:43:56,679 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:56,679 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:56,886 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:56,886 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:56,887 INFO L82 PathProgramCache]: Analyzing trace with hash 460377240, now seen corresponding path program 1 times [2019-11-07 00:43:56,887 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:56,887 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280412455] [2019-11-07 00:43:56,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 00:43:57,088 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280412455] [2019-11-07 00:43:57,089 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036793243] [2019-11-07 00:43:57,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:57,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 00:43:57,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:57,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 00:43:57,846 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 00:43:57,962 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:57,962 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-11-07 00:43:57,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772804116] [2019-11-07 00:43:57,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:43:57,964 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:57,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:43:57,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:43:57,968 INFO L87 Difference]: Start difference. First operand 5587 states and 8898 transitions. Second operand 3 states. [2019-11-07 00:43:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:58,338 INFO L93 Difference]: Finished difference Result 15516 states and 24989 transitions. [2019-11-07 00:43:58,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:43:58,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2019-11-07 00:43:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:58,458 INFO L225 Difference]: With dead ends: 15516 [2019-11-07 00:43:58,458 INFO L226 Difference]: Without dead ends: 10004 [2019-11-07 00:43:58,502 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:43:58,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10004 states. [2019-11-07 00:43:58,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10004 to 9901. [2019-11-07 00:43:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9901 states. [2019-11-07 00:43:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9901 states to 9901 states and 15813 transitions. [2019-11-07 00:43:59,761 INFO L78 Accepts]: Start accepts. Automaton has 9901 states and 15813 transitions. Word has length 148 [2019-11-07 00:43:59,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:59,761 INFO L462 AbstractCegarLoop]: Abstraction has 9901 states and 15813 transitions. [2019-11-07 00:43:59,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:43:59,762 INFO L276 IsEmpty]: Start isEmpty. Operand 9901 states and 15813 transitions. [2019-11-07 00:43:59,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 00:43:59,770 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:59,770 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:59,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:59,977 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:59,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:59,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1428530359, now seen corresponding path program 1 times [2019-11-07 00:43:59,978 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:59,978 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006898827] [2019-11-07 00:43:59,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 00:44:00,158 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006898827] [2019-11-07 00:44:00,158 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058232806] [2019-11-07 00:44:00,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:00,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 3084 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-07 00:44:00,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 00:44:00,938 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:01,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:44:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 00:44:01,304 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:44:01,305 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [7] total 20 [2019-11-07 00:44:01,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404991419] [2019-11-07 00:44:01,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:44:01,307 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:01,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:44:01,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:44:01,308 INFO L87 Difference]: Start difference. First operand 9901 states and 15813 transitions. Second operand 15 states. [2019-11-07 00:44:06,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:06,942 INFO L93 Difference]: Finished difference Result 22354 states and 36119 transitions. [2019-11-07 00:44:06,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-07 00:44:06,942 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 149 [2019-11-07 00:44:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:07,029 INFO L225 Difference]: With dead ends: 22354 [2019-11-07 00:44:07,030 INFO L226 Difference]: Without dead ends: 12471 [2019-11-07 00:44:07,076 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 287 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2019-11-07 00:44:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12471 states. [2019-11-07 00:44:07,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12471 to 12390. [2019-11-07 00:44:07,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12390 states. [2019-11-07 00:44:07,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12390 states to 12390 states and 19825 transitions. [2019-11-07 00:44:07,547 INFO L78 Accepts]: Start accepts. Automaton has 12390 states and 19825 transitions. Word has length 149 [2019-11-07 00:44:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:07,549 INFO L462 AbstractCegarLoop]: Abstraction has 12390 states and 19825 transitions. [2019-11-07 00:44:07,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:44:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 12390 states and 19825 transitions. [2019-11-07 00:44:07,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 00:44:07,560 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:07,560 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:44:07,769 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:07,769 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:07,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:07,769 INFO L82 PathProgramCache]: Analyzing trace with hash -617384536, now seen corresponding path program 1 times [2019-11-07 00:44:07,770 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:07,770 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442055209] [2019-11-07 00:44:07,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 00:44:07,956 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442055209] [2019-11-07 00:44:07,956 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677900998] [2019-11-07 00:44:07,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:08,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-07 00:44:08,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:44:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 00:44:08,798 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:44:08,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:44:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 00:44:09,148 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:44:09,148 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [7] total 20 [2019-11-07 00:44:09,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669582628] [2019-11-07 00:44:09,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:44:09,149 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:09,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:44:09,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:44:09,150 INFO L87 Difference]: Start difference. First operand 12390 states and 19825 transitions. Second operand 15 states.