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_spec1_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:08:40,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:08:40,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:08:40,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:08:40,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:08:40,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:08:40,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:08:40,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:08:40,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:08:40,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:08:40,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:08:40,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:08:40,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:08:40,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:08:40,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:08:40,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:08:40,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:08:40,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:08:40,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:08:40,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:08:40,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:08:40,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:08:40,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:08:40,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:08:40,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:08:40,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:08:40,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:08:40,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:08:40,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:08:40,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:08:40,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:08:40,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:08:40,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:08:40,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:08:40,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:08:40,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:08:40,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:08:40,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:08:40,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:08:40,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:08:40,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:08:40,857 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:08:40,891 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:08:40,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:08:40,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:08:40,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:08:40,897 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:08:40,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:08:40,898 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:08:40,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:08:40,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:08:40,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:08:40,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:08:40,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:08:40,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:08:40,899 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:08:40,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:08:40,899 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:08:40,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:08:40,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:08:40,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:08:40,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:08:40,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:08:40,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:40,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:08:40,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:08:40,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:08:40,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:08:40,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:08:40,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:08:40,903 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 [2019-10-15 01:08:41,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:08:41,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:08:41,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:08:41,245 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:08:41,245 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:08:41,246 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product11.cil.c [2019-10-15 01:08:41,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7bdd17c1/79a6dcdc29584a8b91becc74ef766e12/FLAGb175eb573 [2019-10-15 01:08:41,931 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:08:41,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product11.cil.c [2019-10-15 01:08:41,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7bdd17c1/79a6dcdc29584a8b91becc74ef766e12/FLAGb175eb573 [2019-10-15 01:08:42,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7bdd17c1/79a6dcdc29584a8b91becc74ef766e12 [2019-10-15 01:08:42,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:08:42,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:08:42,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:42,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:08:42,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:08:42,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:42" (1/1) ... [2019-10-15 01:08:42,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa06041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:42, skipping insertion in model container [2019-10-15 01:08:42,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:42" (1/1) ... [2019-10-15 01:08:42,171 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:08:42,261 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:08:43,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:43,090 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:08:43,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:43,302 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:08:43,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:43 WrapperNode [2019-10-15 01:08:43,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:43,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:08:43,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:08:43,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:08:43,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:43" (1/1) ... [2019-10-15 01:08:43,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:43" (1/1) ... [2019-10-15 01:08:43,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:43" (1/1) ... [2019-10-15 01:08:43,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:43" (1/1) ... [2019-10-15 01:08:43,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:43" (1/1) ... [2019-10-15 01:08:43,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:43" (1/1) ... [2019-10-15 01:08:43,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:43" (1/1) ... [2019-10-15 01:08:43,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:08:43,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:08:43,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:08:43,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:08:43,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:43,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:08:43,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:08:43,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:43,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:08:43,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:08:43,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:08:43,585 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:08:43,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 01:08:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-15 01:08:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-15 01:08:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-15 01:08:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:08:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:08:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:08:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:08:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:08:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:08:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:08:43,588 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:08:43,588 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:08:43,588 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:08:43,588 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:08:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:08:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:08:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:08:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:08:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:08:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:08:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:08:43,590 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:08:43,590 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:08:43,590 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:43,590 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:08:43,590 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:08:43,590 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:08:43,591 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:08:43,591 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:08:43,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:08:43,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:08:43,591 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:08:43,591 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:08:43,591 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:08:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:08:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:08:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:08:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:08:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:08:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:08:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:08:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:08:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:08:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:08:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:08:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:08:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:08:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:08:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:08:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:08:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:08:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:08:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:08:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:08:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:08:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:08:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:08:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:08:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:08:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:08:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:08:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:08:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:08:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:08:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:08:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:08:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:08:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:08:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:08:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:08:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:08:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:08:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:08:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:08:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:08:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:08:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:08:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:08:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 01:08:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-15 01:08:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-15 01:08:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-15 01:08:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:08:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:08:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:08:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:08:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:08:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:08:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:08:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:08:43,602 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:08:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:08:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:08:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:08:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:08:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:08:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:08:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:08:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:08:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:08:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:08:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:08:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:08:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:08:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:08:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:08:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:08:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:08:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:08:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:08:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:08:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:08:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:08:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:08:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:08:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:08:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:08:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:08:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:08:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:08:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:08:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:08:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:08:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:08:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:08:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:08:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:08:43,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:08:43,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:08:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:08:43,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:08:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:08:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:08:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:08:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:08:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:08:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:08:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:08:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:08:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:08:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:08:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:08:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:08:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:08:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:08:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:08:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:08:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:08:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:08:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:08:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:08:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:08:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:08:46,154 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:08:46,155 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:08:46,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:46 BoogieIcfgContainer [2019-10-15 01:08:46,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:08:46,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:08:46,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:08:46,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:08:46,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:08:42" (1/3) ... [2019-10-15 01:08:46,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4b0f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:46, skipping insertion in model container [2019-10-15 01:08:46,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:43" (2/3) ... [2019-10-15 01:08:46,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4b0f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:46, skipping insertion in model container [2019-10-15 01:08:46,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:46" (3/3) ... [2019-10-15 01:08:46,168 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2019-10-15 01:08:46,179 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:08:46,191 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:08:46,204 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:08:46,256 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:08:46,256 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:08:46,256 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:08:46,257 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:08:46,257 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:08:46,257 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:08:46,257 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:08:46,257 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:08:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states. [2019-10-15 01:08:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:08:46,339 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:46,341 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:46,343 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:46,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:46,350 INFO L82 PathProgramCache]: Analyzing trace with hash 2009729749, now seen corresponding path program 1 times [2019-10-15 01:08:46,360 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:46,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978009677] [2019-10-15 01:08:46,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:46,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:46,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:47,059 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978009677] [2019-10-15 01:08:47,059 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190800812] [2019-10-15 01:08:47,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:47,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-15 01:08:47,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:08:47,879 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:08:48,298 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:48,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 4 [2019-10-15 01:08:48,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652313620] [2019-10-15 01:08:48,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:08:48,308 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:48,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:08:48,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:48,325 INFO L87 Difference]: Start difference. First operand 766 states. Second operand 2 states. [2019-10-15 01:08:48,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:48,411 INFO L93 Difference]: Finished difference Result 649 states and 1033 transitions. [2019-10-15 01:08:48,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:08:48,412 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-15 01:08:48,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:48,456 INFO L225 Difference]: With dead ends: 649 [2019-10-15 01:08:48,456 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:08:48,462 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:48,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:08:48,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:08:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:08:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 978 transitions. [2019-10-15 01:08:48,586 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 978 transitions. Word has length 164 [2019-10-15 01:08:48,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:48,588 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 978 transitions. [2019-10-15 01:08:48,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:08:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 978 transitions. [2019-10-15 01:08:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 01:08:48,595 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:48,596 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:48,797 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:48,797 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:48,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:48,798 INFO L82 PathProgramCache]: Analyzing trace with hash 2088381448, now seen corresponding path program 1 times [2019-10-15 01:08:48,799 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:48,799 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990051062] [2019-10-15 01:08:48,799 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:48,800 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:48,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:48,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990051062] [2019-10-15 01:08:48,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840240843] [2019-10-15 01:08:48,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:49,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 3260 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:49,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:08:49,725 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:50,041 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:50,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 01:08:50,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709832979] [2019-10-15 01:08:50,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:50,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:50,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:50,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:50,045 INFO L87 Difference]: Start difference. First operand 612 states and 978 transitions. Second operand 4 states. [2019-10-15 01:08:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:50,165 INFO L93 Difference]: Finished difference Result 1196 states and 1929 transitions. [2019-10-15 01:08:50,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:50,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-10-15 01:08:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:50,175 INFO L225 Difference]: With dead ends: 1196 [2019-10-15 01:08:50,176 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:08:50,186 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:08:50,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:08:50,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:08:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:08:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 977 transitions. [2019-10-15 01:08:50,244 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 977 transitions. Word has length 166 [2019-10-15 01:08:50,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:50,244 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 977 transitions. [2019-10-15 01:08:50,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 977 transitions. [2019-10-15 01:08:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-15 01:08:50,250 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:50,251 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:50,459 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:50,460 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:50,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:50,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2119485278, now seen corresponding path program 1 times [2019-10-15 01:08:50,461 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:50,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086380335] [2019-10-15 01:08:50,462 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:50,462 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:50,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:50,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086380335] [2019-10-15 01:08:50,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414470736] [2019-10-15 01:08:50,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:51,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 3262 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:51,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:08:51,309 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:51,636 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:51,636 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 01:08:51,637 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6428802] [2019-10-15 01:08:51,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:51,639 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:51,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:51,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:51,639 INFO L87 Difference]: Start difference. First operand 612 states and 977 transitions. Second operand 4 states. [2019-10-15 01:08:51,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:51,728 INFO L93 Difference]: Finished difference Result 1196 states and 1927 transitions. [2019-10-15 01:08:51,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:51,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2019-10-15 01:08:51,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:51,734 INFO L225 Difference]: With dead ends: 1196 [2019-10-15 01:08:51,734 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:08:51,738 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:08:51,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:08:51,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:08:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:08:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 976 transitions. [2019-10-15 01:08:51,767 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 976 transitions. Word has length 168 [2019-10-15 01:08:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:51,767 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 976 transitions. [2019-10-15 01:08:51,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 976 transitions. [2019-10-15 01:08:51,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:08:51,773 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:51,774 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:51,991 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:51,992 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:51,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:51,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1181326224, now seen corresponding path program 1 times [2019-10-15 01:08:51,994 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:51,994 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333872365] [2019-10-15 01:08:51,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:51,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:51,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:52,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333872365] [2019-10-15 01:08:52,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385087951] [2019-10-15 01:08:52,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:52,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 3264 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:52,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:08:52,818 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:53,098 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:53,098 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:53,098 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 01:08:53,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842456663] [2019-10-15 01:08:53,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:53,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:53,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:53,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:53,100 INFO L87 Difference]: Start difference. First operand 612 states and 976 transitions. Second operand 4 states. [2019-10-15 01:08:53,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:53,215 INFO L93 Difference]: Finished difference Result 1203 states and 1934 transitions. [2019-10-15 01:08:53,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:53,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-15 01:08:53,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:53,222 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:08:53,222 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:08:53,225 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:08:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:08:53,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-15 01:08:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-15 01:08:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 988 transitions. [2019-10-15 01:08:53,254 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 988 transitions. Word has length 170 [2019-10-15 01:08:53,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:53,254 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 988 transitions. [2019-10-15 01:08:53,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:53,254 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 988 transitions. [2019-10-15 01:08:53,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:08:53,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:53,259 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:53,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:53,469 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:53,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:53,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1277638939, now seen corresponding path program 1 times [2019-10-15 01:08:53,471 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:53,471 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410968721] [2019-10-15 01:08:53,472 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:53,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:53,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:53,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410968721] [2019-10-15 01:08:53,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726729907] [2019-10-15 01:08:53,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:54,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 3265 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:54,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:08:54,414 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:54,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:54,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2019-10-15 01:08:54,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370545457] [2019-10-15 01:08:54,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:54,720 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:54,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:54,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:54,721 INFO L87 Difference]: Start difference. First operand 621 states and 988 transitions. Second operand 4 states. [2019-10-15 01:08:54,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:54,822 INFO L93 Difference]: Finished difference Result 1205 states and 1935 transitions. [2019-10-15 01:08:54,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:54,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-15 01:08:54,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:54,828 INFO L225 Difference]: With dead ends: 1205 [2019-10-15 01:08:54,828 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:08:54,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:08:54,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:08:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-15 01:08:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-15 01:08:54,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 987 transitions. [2019-10-15 01:08:54,861 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 987 transitions. Word has length 171 [2019-10-15 01:08:54,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:54,862 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 987 transitions. [2019-10-15 01:08:54,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 987 transitions. [2019-10-15 01:08:54,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 01:08:54,868 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:54,868 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:55,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:55,079 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:55,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:55,080 INFO L82 PathProgramCache]: Analyzing trace with hash 107661556, now seen corresponding path program 1 times [2019-10-15 01:08:55,081 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:55,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221549101] [2019-10-15 01:08:55,081 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:55,082 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:55,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:55,299 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221549101] [2019-10-15 01:08:55,300 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003107767] [2019-10-15 01:08:55,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:55,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 3266 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:55,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:08:55,989 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:56,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:56,274 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 01:08:56,274 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427218434] [2019-10-15 01:08:56,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:56,275 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:56,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:56,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:08:56,276 INFO L87 Difference]: Start difference. First operand 621 states and 987 transitions. Second operand 4 states. [2019-10-15 01:08:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:56,404 INFO L93 Difference]: Finished difference Result 1205 states and 1934 transitions. [2019-10-15 01:08:56,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:56,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-10-15 01:08:56,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:56,410 INFO L225 Difference]: With dead ends: 1205 [2019-10-15 01:08:56,410 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:08:56,413 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 340 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:56,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:08:56,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-15 01:08:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-15 01:08:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 986 transitions. [2019-10-15 01:08:56,437 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 986 transitions. Word has length 172 [2019-10-15 01:08:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:56,438 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 986 transitions. [2019-10-15 01:08:56,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:56,438 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 986 transitions. [2019-10-15 01:08:56,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 01:08:56,443 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:56,444 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:56,655 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:56,655 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:56,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:56,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1662603201, now seen corresponding path program 1 times [2019-10-15 01:08:56,656 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:56,656 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112029482] [2019-10-15 01:08:56,656 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:56,656 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:56,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:56,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112029482] [2019-10-15 01:08:56,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320920202] [2019-10-15 01:08:56,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:57,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:57,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:08:57,621 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:08:57,992 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:57,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 4] total 14 [2019-10-15 01:08:57,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196813304] [2019-10-15 01:08:57,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:57,994 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:57,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:57,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:57,995 INFO L87 Difference]: Start difference. First operand 621 states and 986 transitions. Second operand 4 states. [2019-10-15 01:08:58,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:58,220 INFO L93 Difference]: Finished difference Result 1204 states and 1934 transitions. [2019-10-15 01:08:58,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:58,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2019-10-15 01:08:58,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:58,229 INFO L225 Difference]: With dead ends: 1204 [2019-10-15 01:08:58,229 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:08:58,233 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 344 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:08:58,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:08:58,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-15 01:08:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-15 01:08:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 981 transitions. [2019-10-15 01:08:58,266 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 981 transitions. Word has length 173 [2019-10-15 01:08:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:58,267 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 981 transitions. [2019-10-15 01:08:58,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 981 transitions. [2019-10-15 01:08:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:08:58,273 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:58,273 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:58,483 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:58,484 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:58,484 INFO L82 PathProgramCache]: Analyzing trace with hash 795903017, now seen corresponding path program 1 times [2019-10-15 01:08:58,484 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:58,485 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165291837] [2019-10-15 01:08:58,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:58,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:58,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:58,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165291837] [2019-10-15 01:08:58,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121838010] [2019-10-15 01:08:58,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:59,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:59,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:08:59,759 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:00,060 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:00,061 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 4] total 14 [2019-10-15 01:09:00,061 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439837621] [2019-10-15 01:09:00,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:00,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:00,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:00,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:09:00,075 INFO L87 Difference]: Start difference. First operand 621 states and 981 transitions. Second operand 4 states. [2019-10-15 01:09:00,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:00,274 INFO L93 Difference]: Finished difference Result 1204 states and 1924 transitions. [2019-10-15 01:09:00,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:09:00,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2019-10-15 01:09:00,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:00,287 INFO L225 Difference]: With dead ends: 1204 [2019-10-15 01:09:00,288 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:09:00,293 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:09:00,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:09:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-15 01:09:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-15 01:09:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 976 transitions. [2019-10-15 01:09:00,325 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 976 transitions. Word has length 175 [2019-10-15 01:09:00,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:00,325 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 976 transitions. [2019-10-15 01:09:00,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 976 transitions. [2019-10-15 01:09:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-15 01:09:00,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:00,334 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:00,544 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:00,544 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:00,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:00,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1292592075, now seen corresponding path program 1 times [2019-10-15 01:09:00,545 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:00,545 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584977339] [2019-10-15 01:09:00,545 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:00,546 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:00,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:00,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584977339] [2019-10-15 01:09:00,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074417285] [2019-10-15 01:09:00,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:01,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 3271 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:09:01,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:01,637 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:01,980 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:01,980 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 4] total 14 [2019-10-15 01:09:01,981 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820132536] [2019-10-15 01:09:01,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:01,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:01,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:01,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:09:01,983 INFO L87 Difference]: Start difference. First operand 621 states and 976 transitions. Second operand 4 states. [2019-10-15 01:09:02,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:02,215 INFO L93 Difference]: Finished difference Result 1240 states and 1973 transitions. [2019-10-15 01:09:02,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:09:02,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-15 01:09:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:02,222 INFO L225 Difference]: With dead ends: 1240 [2019-10-15 01:09:02,223 INFO L226 Difference]: Without dead ends: 660 [2019-10-15 01:09:02,226 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:09:02,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2019-10-15 01:09:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2019-10-15 01:09:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2019-10-15 01:09:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1040 transitions. [2019-10-15 01:09:02,248 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1040 transitions. Word has length 177 [2019-10-15 01:09:02,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:02,249 INFO L462 AbstractCegarLoop]: Abstraction has 660 states and 1040 transitions. [2019-10-15 01:09:02,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:02,249 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1040 transitions. [2019-10-15 01:09:02,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:09:02,254 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:02,254 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:02,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:02,467 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:02,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:02,468 INFO L82 PathProgramCache]: Analyzing trace with hash 550468332, now seen corresponding path program 1 times [2019-10-15 01:09:02,468 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:02,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225765919] [2019-10-15 01:09:02,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:02,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:02,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:02,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225765919] [2019-10-15 01:09:02,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299632253] [2019-10-15 01:09:02,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:03,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 3272 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:09:03,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:03,515 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:03,845 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:03,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10, 4] total 14 [2019-10-15 01:09:03,848 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805175004] [2019-10-15 01:09:03,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:03,850 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:03,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:03,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:09:03,851 INFO L87 Difference]: Start difference. First operand 660 states and 1040 transitions. Second operand 4 states. [2019-10-15 01:09:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:04,053 INFO L93 Difference]: Finished difference Result 1243 states and 1976 transitions. [2019-10-15 01:09:04,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:09:04,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2019-10-15 01:09:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:04,060 INFO L225 Difference]: With dead ends: 1243 [2019-10-15 01:09:04,060 INFO L226 Difference]: Without dead ends: 660 [2019-10-15 01:09:04,064 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 354 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:09:04,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2019-10-15 01:09:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2019-10-15 01:09:04,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2019-10-15 01:09:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1035 transitions. [2019-10-15 01:09:04,099 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1035 transitions. Word has length 178 [2019-10-15 01:09:04,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:04,100 INFO L462 AbstractCegarLoop]: Abstraction has 660 states and 1035 transitions. [2019-10-15 01:09:04,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1035 transitions. [2019-10-15 01:09:04,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:09:04,104 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:04,105 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:04,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:04,314 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:04,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:04,314 INFO L82 PathProgramCache]: Analyzing trace with hash -231579797, now seen corresponding path program 1 times [2019-10-15 01:09:04,315 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:04,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307327173] [2019-10-15 01:09:04,315 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:04,315 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:04,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:04,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307327173] [2019-10-15 01:09:04,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130648126] [2019-10-15 01:09:04,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:05,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 3268 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-15 01:09:05,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:05,421 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:05,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:09:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:09:05,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:05,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 16 [2019-10-15 01:09:05,999 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473982350] [2019-10-15 01:09:06,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:09:06,000 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:06,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:09:06,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:09:06,001 INFO L87 Difference]: Start difference. First operand 660 states and 1035 transitions. Second operand 9 states. [2019-10-15 01:09:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:06,240 INFO L93 Difference]: Finished difference Result 1256 states and 1990 transitions. [2019-10-15 01:09:06,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:09:06,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2019-10-15 01:09:06,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:06,246 INFO L225 Difference]: With dead ends: 1256 [2019-10-15 01:09:06,247 INFO L226 Difference]: Without dead ends: 676 [2019-10-15 01:09:06,250 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 341 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:09:06,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2019-10-15 01:09:06,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 669. [2019-10-15 01:09:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2019-10-15 01:09:06,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1048 transitions. [2019-10-15 01:09:06,279 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1048 transitions. Word has length 178 [2019-10-15 01:09:06,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:06,279 INFO L462 AbstractCegarLoop]: Abstraction has 669 states and 1048 transitions. [2019-10-15 01:09:06,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:09:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1048 transitions. [2019-10-15 01:09:06,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:09:06,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:06,287 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:06,504 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:06,505 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:06,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:06,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1645689098, now seen corresponding path program 1 times [2019-10-15 01:09:06,505 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:06,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950686207] [2019-10-15 01:09:06,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:06,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:06,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:09:06,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950686207] [2019-10-15 01:09:06,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307191415] [2019-10-15 01:09:06,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:07,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:09:07,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:07,534 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:08,066 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:09:08,067 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 13 [2019-10-15 01:09:08,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806940771] [2019-10-15 01:09:08,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:09:08,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:08,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:09:08,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:09:08,070 INFO L87 Difference]: Start difference. First operand 669 states and 1048 transitions. Second operand 11 states. [2019-10-15 01:09:08,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:08,238 INFO L93 Difference]: Finished difference Result 1194 states and 1892 transitions. [2019-10-15 01:09:08,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:09:08,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 178 [2019-10-15 01:09:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:08,245 INFO L225 Difference]: With dead ends: 1194 [2019-10-15 01:09:08,245 INFO L226 Difference]: Without dead ends: 686 [2019-10-15 01:09:08,248 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 347 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:09:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2019-10-15 01:09:08,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 676. [2019-10-15 01:09:08,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2019-10-15 01:09:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1058 transitions. [2019-10-15 01:09:08,276 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1058 transitions. Word has length 178 [2019-10-15 01:09:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:08,278 INFO L462 AbstractCegarLoop]: Abstraction has 676 states and 1058 transitions. [2019-10-15 01:09:08,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:09:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1058 transitions. [2019-10-15 01:09:08,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:09:08,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:08,285 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:08,494 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:08,495 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:08,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:08,495 INFO L82 PathProgramCache]: Analyzing trace with hash -2079475670, now seen corresponding path program 1 times [2019-10-15 01:09:08,495 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:08,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813393582] [2019-10-15 01:09:08,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:08,496 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:08,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:09:08,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813393582] [2019-10-15 01:09:08,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051185419] [2019-10-15 01:09:08,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:09,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 3268 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:09:09,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:09,417 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:09:09,776 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:09:09,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 10 [2019-10-15 01:09:09,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052618458] [2019-10-15 01:09:09,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:09:09,778 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:09,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:09:09,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:09:09,778 INFO L87 Difference]: Start difference. First operand 676 states and 1058 transitions. Second operand 8 states. [2019-10-15 01:09:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:09,904 INFO L93 Difference]: Finished difference Result 1198 states and 1901 transitions. [2019-10-15 01:09:09,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:09:09,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2019-10-15 01:09:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:09,910 INFO L225 Difference]: With dead ends: 1198 [2019-10-15 01:09:09,910 INFO L226 Difference]: Without dead ends: 690 [2019-10-15 01:09:09,913 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 349 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:09:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-10-15 01:09:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 683. [2019-10-15 01:09:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2019-10-15 01:09:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1069 transitions. [2019-10-15 01:09:09,941 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1069 transitions. Word has length 179 [2019-10-15 01:09:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:09,941 INFO L462 AbstractCegarLoop]: Abstraction has 683 states and 1069 transitions. [2019-10-15 01:09:09,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:09:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1069 transitions. [2019-10-15 01:09:09,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 01:09:09,947 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:09,947 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:10,166 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:10,167 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:10,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:10,167 INFO L82 PathProgramCache]: Analyzing trace with hash -2072147030, now seen corresponding path program 1 times [2019-10-15 01:09:10,168 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:10,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220000797] [2019-10-15 01:09:10,168 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:10,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:10,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:09:10,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220000797] [2019-10-15 01:09:10,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984193451] [2019-10-15 01:09:10,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:11,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 3264 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-15 01:09:11,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:09:11,429 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:11,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:09:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:09:12,018 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:09:12,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [4] total 16 [2019-10-15 01:09:12,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843394138] [2019-10-15 01:09:12,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:09:12,021 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:12,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:09:12,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:09:12,022 INFO L87 Difference]: Start difference. First operand 683 states and 1069 transitions. Second operand 14 states. [2019-10-15 01:09:12,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:12,256 INFO L93 Difference]: Finished difference Result 1199 states and 1901 transitions. [2019-10-15 01:09:12,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:09:12,257 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 179 [2019-10-15 01:09:12,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:12,261 INFO L225 Difference]: With dead ends: 1199 [2019-10-15 01:09:12,262 INFO L226 Difference]: Without dead ends: 691 [2019-10-15 01:09:12,264 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 344 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:09:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-10-15 01:09:12,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 683. [2019-10-15 01:09:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2019-10-15 01:09:12,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1069 transitions. [2019-10-15 01:09:12,289 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1069 transitions. Word has length 179 [2019-10-15 01:09:12,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:12,289 INFO L462 AbstractCegarLoop]: Abstraction has 683 states and 1069 transitions. [2019-10-15 01:09:12,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:09:12,289 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1069 transitions. [2019-10-15 01:09:12,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 01:09:12,294 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:12,294 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:12,504 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:12,505 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:12,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:12,505 INFO L82 PathProgramCache]: Analyzing trace with hash -17267335, now seen corresponding path program 1 times [2019-10-15 01:09:12,506 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:12,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032786527] [2019-10-15 01:09:12,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:12,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:12,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:09:12,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032786527] [2019-10-15 01:09:12,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758147014] [2019-10-15 01:09:12,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:13,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 3265 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-15 01:09:13,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:09:13,710 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:14,121 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:09:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:09:14,261 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:09:14,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [4] total 13 [2019-10-15 01:09:14,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028890728] [2019-10-15 01:09:14,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:09:14,264 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:14,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:09:14,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:09:14,265 INFO L87 Difference]: Start difference. First operand 683 states and 1069 transitions. Second operand 11 states. [2019-10-15 01:09:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:14,462 INFO L93 Difference]: Finished difference Result 1200 states and 1909 transitions. [2019-10-15 01:09:14,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:09:14,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2019-10-15 01:09:14,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:14,468 INFO L225 Difference]: With dead ends: 1200 [2019-10-15 01:09:14,468 INFO L226 Difference]: Without dead ends: 692 [2019-10-15 01:09:14,472 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 347 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:09:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2019-10-15 01:09:14,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 685. [2019-10-15 01:09:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2019-10-15 01:09:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1075 transitions. [2019-10-15 01:09:14,499 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1075 transitions. Word has length 180 [2019-10-15 01:09:14,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:14,499 INFO L462 AbstractCegarLoop]: Abstraction has 685 states and 1075 transitions. [2019-10-15 01:09:14,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:09:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1075 transitions. [2019-10-15 01:09:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 01:09:14,504 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:14,505 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:14,714 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:14,714 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:14,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:14,715 INFO L82 PathProgramCache]: Analyzing trace with hash -492976219, now seen corresponding path program 1 times [2019-10-15 01:09:14,715 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:14,715 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258453206] [2019-10-15 01:09:14,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:14,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:14,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:14,826 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:09:14,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258453206] [2019-10-15 01:09:14,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271349084] [2019-10-15 01:09:14,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true