/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:43:11,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:43:11,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:43:11,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:43:11,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:43:11,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:43:11,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:43:11,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:43:11,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:43:11,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:43:11,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:43:11,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:43:11,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:43:11,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:43:11,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:43:11,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:43:11,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:43:11,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:43:11,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:43:11,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:43:11,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:43:11,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:43:11,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:43:11,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:43:11,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:43:11,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:43:11,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:43:11,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:43:11,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:43:11,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:43:11,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:43:11,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:43:11,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:43:11,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:43:11,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:43:11,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:43:11,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:43:11,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:43:11,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:43:11,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:43:11,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:43:11,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:43:11,414 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:43:11,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:43:11,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:43:11,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:43:11,419 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:43:11,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:43:11,419 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:43:11,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:43:11,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:43:11,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:43:11,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:43:11,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:43:11,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:43:11,421 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:43:11,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:43:11,421 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:43:11,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:43:11,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:43:11,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:43:11,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:43:11,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:43:11,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:43:11,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:43:11,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:43:11,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:43:11,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:43:11,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:43:11,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:43:11,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:43:11,718 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:43:11,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:43:11,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:43:11,742 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:43:11,743 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:43:11,744 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product09.cil.c [2019-11-07 00:43:11,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7511244/073c319b74d1445c8009179a1330e3e2/FLAGbdf67ded4 [2019-11-07 00:43:12,409 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:43:12,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product09.cil.c [2019-11-07 00:43:12,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7511244/073c319b74d1445c8009179a1330e3e2/FLAGbdf67ded4 [2019-11-07 00:43:12,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7511244/073c319b74d1445c8009179a1330e3e2 [2019-11-07 00:43:12,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:43:12,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:43:12,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:43:12,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:43:12,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:43:12,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:12" (1/1) ... [2019-11-07 00:43:12,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5a818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:12, skipping insertion in model container [2019-11-07 00:43:12,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:12" (1/1) ... [2019-11-07 00:43:12,665 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:43:12,743 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:43:13,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:43:13,526 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:43:13,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:43:13,743 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:43:13,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:13 WrapperNode [2019-11-07 00:43:13,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:43:13,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:43:13,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:43:13,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:43:13,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:13" (1/1) ... [2019-11-07 00:43:13,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:13" (1/1) ... [2019-11-07 00:43:13,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:13" (1/1) ... [2019-11-07 00:43:13,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:13" (1/1) ... [2019-11-07 00:43:13,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:13" (1/1) ... [2019-11-07 00:43:13,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:13" (1/1) ... [2019-11-07 00:43:13,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:13" (1/1) ... [2019-11-07 00:43:13,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:43:13,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:43:13,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:43:13,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:43:13,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:43:14,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:43:14,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:43:14,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:43:14,011 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:43:14,011 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:43:14,012 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:43:14,012 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:43:14,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:43:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:43:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:43:14,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:43:14,014 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:43:14,014 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:43:14,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:43:14,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:43:14,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:43:14,019 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:43:14,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:43:14,020 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:43:14,020 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:43:14,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:43:14,021 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:43:14,021 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:43:14,021 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:43:14,021 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:43:14,021 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:43:14,022 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:43:14,022 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:43:14,022 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:43:14,022 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:43:14,022 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:43:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:43:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:43:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:43:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:43:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:43:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:43:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:43:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:43:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:43:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:43:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:43:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:43:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:43:14,026 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:43:14,026 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:43:14,026 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:43:14,026 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:43:14,026 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:43:14,026 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:43:14,027 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:43:14,027 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:43:14,027 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:43:14,027 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:43:14,027 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:43:14,027 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:43:14,028 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:43:14,028 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:43:14,028 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:43:14,028 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:43:14,028 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:43:14,029 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:43:14,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:43:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:43:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:43:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:43:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:43:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:43:14,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:43:14,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:43:14,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:43:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:43:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:43:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:43:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:43:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:43:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:43:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:43:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:43:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:43:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:43:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:43:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:43:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:43:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:43:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:43:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:43:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:43:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:43:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:43:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:43:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:43:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:43:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:43:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:43:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:43:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:43:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:43:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:43:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:43:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:43:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:43:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:43:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:43:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:43:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:43:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:43:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:43:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:43:14,042 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:43:14,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:43:14,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:43:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:43:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:43:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:43:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:43:14,044 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:43:14,044 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:43:14,044 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:43:14,045 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:43:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:43:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:43:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:43:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:43:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:43:14,046 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:43:14,047 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:43:14,047 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:43:14,047 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:43:14,048 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:43:14,048 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:43:14,049 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:43:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:43:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:43:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:43:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:43:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:43:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:43:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:43:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:43:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:43:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:43:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:43:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:43:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:43:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:43:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:43:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:43:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:43:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:43:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:43:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:43:16,557 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:43:16,557 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:43:16,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:16 BoogieIcfgContainer [2019-11-07 00:43:16,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:43:16,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:43:16,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:43:16,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:43:16,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:43:12" (1/3) ... [2019-11-07 00:43:16,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b06ea3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:16, skipping insertion in model container [2019-11-07 00:43:16,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:13" (2/3) ... [2019-11-07 00:43:16,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b06ea3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:16, skipping insertion in model container [2019-11-07 00:43:16,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:16" (3/3) ... [2019-11-07 00:43:16,568 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2019-11-07 00:43:16,580 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:43:16,591 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:43:16,606 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:43:16,642 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:43:16,642 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:43:16,642 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:43:16,642 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:43:16,642 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:43:16,642 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:43:16,642 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:43:16,643 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:43:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states. [2019-11-07 00:43:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-07 00:43:16,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:16,705 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:16,707 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:16,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1161933342, now seen corresponding path program 1 times [2019-11-07 00:43:16,729 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:16,730 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416896736] [2019-11-07 00:43:16,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:17,541 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416896736] [2019-11-07 00:43:17,542 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:17,542 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:17,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106555828] [2019-11-07 00:43:17,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:17,551 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:17,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:17,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:17,568 INFO L87 Difference]: Start difference. First operand 757 states. Second operand 7 states. [2019-11-07 00:43:17,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:17,823 INFO L93 Difference]: Finished difference Result 1193 states and 1952 transitions. [2019-11-07 00:43:17,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:17,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-11-07 00:43:17,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:17,852 INFO L225 Difference]: With dead ends: 1193 [2019-11-07 00:43:17,852 INFO L226 Difference]: Without dead ends: 605 [2019-11-07 00:43:17,871 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:43:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-11-07 00:43:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 603. [2019-11-07 00:43:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-11-07 00:43:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 971 transitions. [2019-11-07 00:43:18,052 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 971 transitions. Word has length 115 [2019-11-07 00:43:18,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:18,053 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 971 transitions. [2019-11-07 00:43:18,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 971 transitions. [2019-11-07 00:43:18,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-07 00:43:18,060 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:18,060 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:18,061 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:18,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:18,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1514671527, now seen corresponding path program 1 times [2019-11-07 00:43:18,061 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:18,062 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852919133] [2019-11-07 00:43:18,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:18,255 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852919133] [2019-11-07 00:43:18,256 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:18,256 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:18,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36672367] [2019-11-07 00:43:18,258 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:18,258 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:18,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:18,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:18,259 INFO L87 Difference]: Start difference. First operand 603 states and 971 transitions. Second operand 4 states. [2019-11-07 00:43:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:18,370 INFO L93 Difference]: Finished difference Result 1172 states and 1907 transitions. [2019-11-07 00:43:18,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:43:18,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2019-11-07 00:43:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:18,376 INFO L225 Difference]: With dead ends: 1172 [2019-11-07 00:43:18,376 INFO L226 Difference]: Without dead ends: 585 [2019-11-07 00:43:18,379 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2019-11-07 00:43:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2019-11-07 00:43:18,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2019-11-07 00:43:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 938 transitions. [2019-11-07 00:43:18,408 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 938 transitions. Word has length 116 [2019-11-07 00:43:18,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:18,410 INFO L462 AbstractCegarLoop]: Abstraction has 585 states and 938 transitions. [2019-11-07 00:43:18,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:43:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 938 transitions. [2019-11-07 00:43:18,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-07 00:43:18,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:18,425 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:18,425 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:18,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:18,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1422688811, now seen corresponding path program 1 times [2019-11-07 00:43:18,426 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:18,426 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083470077] [2019-11-07 00:43:18,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:18,641 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083470077] [2019-11-07 00:43:18,641 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:18,642 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:18,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088561591] [2019-11-07 00:43:18,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:18,643 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:18,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:18,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:18,644 INFO L87 Difference]: Start difference. First operand 585 states and 938 transitions. Second operand 7 states. [2019-11-07 00:43:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:18,745 INFO L93 Difference]: Finished difference Result 1141 states and 1849 transitions. [2019-11-07 00:43:18,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:18,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-11-07 00:43:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:18,751 INFO L225 Difference]: With dead ends: 1141 [2019-11-07 00:43:18,752 INFO L226 Difference]: Without dead ends: 579 [2019-11-07 00:43:18,755 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:43:18,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-11-07 00:43:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-11-07 00:43:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-11-07 00:43:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 925 transitions. [2019-11-07 00:43:18,780 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 925 transitions. Word has length 116 [2019-11-07 00:43:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:18,780 INFO L462 AbstractCegarLoop]: Abstraction has 579 states and 925 transitions. [2019-11-07 00:43:18,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 925 transitions. [2019-11-07 00:43:18,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-07 00:43:18,784 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:18,784 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:18,785 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:18,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:18,785 INFO L82 PathProgramCache]: Analyzing trace with hash 877146082, now seen corresponding path program 1 times [2019-11-07 00:43:18,785 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:18,786 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334971701] [2019-11-07 00:43:18,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:18,938 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334971701] [2019-11-07 00:43:18,938 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:18,939 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:18,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290517132] [2019-11-07 00:43:18,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:18,940 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:18,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:18,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:18,940 INFO L87 Difference]: Start difference. First operand 579 states and 925 transitions. Second operand 7 states. [2019-11-07 00:43:19,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:19,037 INFO L93 Difference]: Finished difference Result 1129 states and 1823 transitions. [2019-11-07 00:43:19,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:19,040 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2019-11-07 00:43:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:19,047 INFO L225 Difference]: With dead ends: 1129 [2019-11-07 00:43:19,047 INFO L226 Difference]: Without dead ends: 573 [2019-11-07 00:43:19,053 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:43:19,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2019-11-07 00:43:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2019-11-07 00:43:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2019-11-07 00:43:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 912 transitions. [2019-11-07 00:43:19,122 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 912 transitions. Word has length 117 [2019-11-07 00:43:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:19,123 INFO L462 AbstractCegarLoop]: Abstraction has 573 states and 912 transitions. [2019-11-07 00:43:19,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 912 transitions. [2019-11-07 00:43:19,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 00:43:19,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:19,126 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:19,126 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:19,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1106162991, now seen corresponding path program 1 times [2019-11-07 00:43:19,127 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:19,127 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388862547] [2019-11-07 00:43:19,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:19,275 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388862547] [2019-11-07 00:43:19,276 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:19,276 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:19,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055949642] [2019-11-07 00:43:19,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:19,277 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:19,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:19,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:19,278 INFO L87 Difference]: Start difference. First operand 573 states and 912 transitions. Second operand 7 states. [2019-11-07 00:43:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:19,384 INFO L93 Difference]: Finished difference Result 1117 states and 1797 transitions. [2019-11-07 00:43:19,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:19,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-11-07 00:43:19,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:19,400 INFO L225 Difference]: With dead ends: 1117 [2019-11-07 00:43:19,401 INFO L226 Difference]: Without dead ends: 567 [2019-11-07 00:43:19,407 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:43:19,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-11-07 00:43:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-11-07 00:43:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-11-07 00:43:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 899 transitions. [2019-11-07 00:43:19,432 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 899 transitions. Word has length 118 [2019-11-07 00:43:19,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:19,433 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 899 transitions. [2019-11-07 00:43:19,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 899 transitions. [2019-11-07 00:43:19,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 00:43:19,442 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:19,442 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:19,443 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:19,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:19,443 INFO L82 PathProgramCache]: Analyzing trace with hash -74424208, now seen corresponding path program 1 times [2019-11-07 00:43:19,443 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:19,444 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789359396] [2019-11-07 00:43:19,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:19,611 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789359396] [2019-11-07 00:43:19,612 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:19,612 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:19,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49621313] [2019-11-07 00:43:19,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:19,613 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:19,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:19,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:19,614 INFO L87 Difference]: Start difference. First operand 567 states and 899 transitions. Second operand 7 states. [2019-11-07 00:43:19,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:19,705 INFO L93 Difference]: Finished difference Result 1105 states and 1771 transitions. [2019-11-07 00:43:19,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:19,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2019-11-07 00:43:19,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:19,716 INFO L225 Difference]: With dead ends: 1105 [2019-11-07 00:43:19,717 INFO L226 Difference]: Without dead ends: 567 [2019-11-07 00:43:19,721 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:43:19,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-11-07 00:43:19,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-11-07 00:43:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-11-07 00:43:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 898 transitions. [2019-11-07 00:43:19,753 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 898 transitions. Word has length 118 [2019-11-07 00:43:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:19,756 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 898 transitions. [2019-11-07 00:43:19,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 898 transitions. [2019-11-07 00:43:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 00:43:19,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:19,761 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:19,762 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:19,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:19,762 INFO L82 PathProgramCache]: Analyzing trace with hash -423275098, now seen corresponding path program 1 times [2019-11-07 00:43:19,762 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:19,763 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837359828] [2019-11-07 00:43:19,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:19,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:19,984 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837359828] [2019-11-07 00:43:19,984 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:19,984 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:19,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407381838] [2019-11-07 00:43:19,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:19,985 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:19,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:19,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:19,986 INFO L87 Difference]: Start difference. First operand 567 states and 898 transitions. Second operand 5 states. [2019-11-07 00:43:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:20,059 INFO L93 Difference]: Finished difference Result 1104 states and 1768 transitions. [2019-11-07 00:43:20,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:20,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2019-11-07 00:43:20,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:20,068 INFO L225 Difference]: With dead ends: 1104 [2019-11-07 00:43:20,068 INFO L226 Difference]: Without dead ends: 567 [2019-11-07 00:43:20,072 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:20,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-11-07 00:43:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-11-07 00:43:20,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-11-07 00:43:20,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 897 transitions. [2019-11-07 00:43:20,095 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 897 transitions. Word has length 119 [2019-11-07 00:43:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:20,096 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 897 transitions. [2019-11-07 00:43:20,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:20,096 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 897 transitions. [2019-11-07 00:43:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 00:43:20,101 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:20,101 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:20,101 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:20,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:20,101 INFO L82 PathProgramCache]: Analyzing trace with hash -161455577, now seen corresponding path program 1 times [2019-11-07 00:43:20,102 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:20,103 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719575767] [2019-11-07 00:43:20,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:20,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:20,262 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719575767] [2019-11-07 00:43:20,262 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:20,263 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:20,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193282732] [2019-11-07 00:43:20,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:20,264 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:20,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:20,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:20,264 INFO L87 Difference]: Start difference. First operand 567 states and 897 transitions. Second operand 5 states. [2019-11-07 00:43:20,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:20,333 INFO L93 Difference]: Finished difference Result 1104 states and 1766 transitions. [2019-11-07 00:43:20,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:20,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2019-11-07 00:43:20,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:20,338 INFO L225 Difference]: With dead ends: 1104 [2019-11-07 00:43:20,338 INFO L226 Difference]: Without dead ends: 567 [2019-11-07 00:43:20,341 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:20,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-11-07 00:43:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-11-07 00:43:20,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-11-07 00:43:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 896 transitions. [2019-11-07 00:43:20,363 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 896 transitions. Word has length 120 [2019-11-07 00:43:20,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:20,363 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 896 transitions. [2019-11-07 00:43:20,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 896 transitions. [2019-11-07 00:43:20,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 00:43:20,367 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:20,367 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:20,367 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:20,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:20,368 INFO L82 PathProgramCache]: Analyzing trace with hash -158807839, now seen corresponding path program 1 times [2019-11-07 00:43:20,368 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:20,368 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440706023] [2019-11-07 00:43:20,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:20,506 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440706023] [2019-11-07 00:43:20,507 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:20,508 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:20,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446230322] [2019-11-07 00:43:20,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:20,509 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:20,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:20,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:20,509 INFO L87 Difference]: Start difference. First operand 567 states and 896 transitions. Second operand 5 states. [2019-11-07 00:43:20,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:20,598 INFO L93 Difference]: Finished difference Result 1104 states and 1764 transitions. [2019-11-07 00:43:20,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:20,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2019-11-07 00:43:20,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:20,606 INFO L225 Difference]: With dead ends: 1104 [2019-11-07 00:43:20,606 INFO L226 Difference]: Without dead ends: 567 [2019-11-07 00:43:20,611 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-11-07 00:43:20,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-11-07 00:43:20,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-11-07 00:43:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 895 transitions. [2019-11-07 00:43:20,648 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 895 transitions. Word has length 121 [2019-11-07 00:43:20,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:20,649 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 895 transitions. [2019-11-07 00:43:20,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 895 transitions. [2019-11-07 00:43:20,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-07 00:43:20,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:20,654 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:20,655 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:20,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:20,655 INFO L82 PathProgramCache]: Analyzing trace with hash 399449218, now seen corresponding path program 1 times [2019-11-07 00:43:20,656 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:20,656 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742698826] [2019-11-07 00:43:20,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:20,910 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742698826] [2019-11-07 00:43:20,910 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:20,910 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:20,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239081263] [2019-11-07 00:43:20,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:20,912 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:20,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:20,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:20,912 INFO L87 Difference]: Start difference. First operand 567 states and 895 transitions. Second operand 5 states. [2019-11-07 00:43:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:21,001 INFO L93 Difference]: Finished difference Result 1104 states and 1762 transitions. [2019-11-07 00:43:21,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:21,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2019-11-07 00:43:21,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:21,008 INFO L225 Difference]: With dead ends: 1104 [2019-11-07 00:43:21,009 INFO L226 Difference]: Without dead ends: 567 [2019-11-07 00:43:21,013 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:43:21,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-11-07 00:43:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-11-07 00:43:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-11-07 00:43:21,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 894 transitions. [2019-11-07 00:43:21,038 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 894 transitions. Word has length 122 [2019-11-07 00:43:21,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:21,039 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 894 transitions. [2019-11-07 00:43:21,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:21,039 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 894 transitions. [2019-11-07 00:43:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-07 00:43:21,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:21,044 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:21,044 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:21,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:21,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1001725980, now seen corresponding path program 1 times [2019-11-07 00:43:21,045 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:21,045 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961624519] [2019-11-07 00:43:21,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:43:21,235 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961624519] [2019-11-07 00:43:21,236 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595582272] [2019-11-07 00:43:21,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:21,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:43:21,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:43:21,936 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:22,060 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:22,060 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 00:43:22,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292911437] [2019-11-07 00:43:22,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:43:22,062 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:22,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:43:22,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:43:22,062 INFO L87 Difference]: Start difference. First operand 567 states and 894 transitions. Second operand 3 states. [2019-11-07 00:43:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:22,141 INFO L93 Difference]: Finished difference Result 1577 states and 2540 transitions. [2019-11-07 00:43:22,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:43:22,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2019-11-07 00:43:22,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:22,150 INFO L225 Difference]: With dead ends: 1577 [2019-11-07 00:43:22,150 INFO L226 Difference]: Without dead ends: 1044 [2019-11-07 00:43:22,154 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:43:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2019-11-07 00:43:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1031. [2019-11-07 00:43:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-11-07 00:43:22,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1649 transitions. [2019-11-07 00:43:22,219 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1649 transitions. Word has length 123 [2019-11-07 00:43:22,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:22,222 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1649 transitions. [2019-11-07 00:43:22,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:43:22,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1649 transitions. [2019-11-07 00:43:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 00:43:22,227 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:22,228 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:22,444 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:22,444 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:22,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:22,445 INFO L82 PathProgramCache]: Analyzing trace with hash -826466961, now seen corresponding path program 1 times [2019-11-07 00:43:22,445 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:22,445 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745954462] [2019-11-07 00:43:22,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:22,634 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745954462] [2019-11-07 00:43:22,634 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:22,634 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:22,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403388208] [2019-11-07 00:43:22,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:22,635 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:22,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:22,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:22,636 INFO L87 Difference]: Start difference. First operand 1031 states and 1649 transitions. Second operand 7 states. [2019-11-07 00:43:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:25,300 INFO L93 Difference]: Finished difference Result 3027 states and 4972 transitions. [2019-11-07 00:43:25,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:43:25,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2019-11-07 00:43:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:25,320 INFO L225 Difference]: With dead ends: 3027 [2019-11-07 00:43:25,320 INFO L226 Difference]: Without dead ends: 2030 [2019-11-07 00:43:25,328 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:43:25,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2019-11-07 00:43:25,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1964. [2019-11-07 00:43:25,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1964 states. [2019-11-07 00:43:25,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 3221 transitions. [2019-11-07 00:43:25,452 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 3221 transitions. Word has length 127 [2019-11-07 00:43:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:25,452 INFO L462 AbstractCegarLoop]: Abstraction has 1964 states and 3221 transitions. [2019-11-07 00:43:25,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 3221 transitions. [2019-11-07 00:43:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-07 00:43:25,457 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:25,457 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:25,457 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:25,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:25,458 INFO L82 PathProgramCache]: Analyzing trace with hash -134098458, now seen corresponding path program 1 times [2019-11-07 00:43:25,458 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:25,458 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813374255] [2019-11-07 00:43:25,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:43:25,628 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813374255] [2019-11-07 00:43:25,628 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928309513] [2019-11-07 00:43:25,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:26,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:43:26,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:43:26,314 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:26,435 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:26,435 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 00:43:26,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397188155] [2019-11-07 00:43:26,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:43:26,436 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:26,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:43:26,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:43:26,437 INFO L87 Difference]: Start difference. First operand 1964 states and 3221 transitions. Second operand 3 states. [2019-11-07 00:43:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:26,595 INFO L93 Difference]: Finished difference Result 4834 states and 8016 transitions. [2019-11-07 00:43:26,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:43:26,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2019-11-07 00:43:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:26,625 INFO L225 Difference]: With dead ends: 4834 [2019-11-07 00:43:26,626 INFO L226 Difference]: Without dead ends: 2904 [2019-11-07 00:43:26,639 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:43:26,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2019-11-07 00:43:26,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2804. [2019-11-07 00:43:26,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2804 states. [2019-11-07 00:43:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 4625 transitions. [2019-11-07 00:43:26,842 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 4625 transitions. Word has length 124 [2019-11-07 00:43:26,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:26,842 INFO L462 AbstractCegarLoop]: Abstraction has 2804 states and 4625 transitions. [2019-11-07 00:43:26,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:43:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 4625 transitions. [2019-11-07 00:43:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-07 00:43:26,849 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:26,849 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:43:27,056 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:27,056 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:27,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:27,057 INFO L82 PathProgramCache]: Analyzing trace with hash -340723709, now seen corresponding path program 1 times [2019-11-07 00:43:27,057 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:27,057 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934598699] [2019-11-07 00:43:27,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:43:27,248 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934598699] [2019-11-07 00:43:27,248 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124426853] [2019-11-07 00:43:27,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:27,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:43:27,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:43:27,869 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:28,161 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:28,161 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [11] total 14 [2019-11-07 00:43:28,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498650966] [2019-11-07 00:43:28,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:28,162 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:28,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:28,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:43:28,163 INFO L87 Difference]: Start difference. First operand 2804 states and 4625 transitions. Second operand 5 states. [2019-11-07 00:43:30,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:30,327 INFO L93 Difference]: Finished difference Result 12876 states and 21499 transitions. [2019-11-07 00:43:30,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:30,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2019-11-07 00:43:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:30,432 INFO L225 Difference]: With dead ends: 12876 [2019-11-07 00:43:30,433 INFO L226 Difference]: Without dead ends: 10107 [2019-11-07 00:43:30,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:43:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10107 states. [2019-11-07 00:43:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10107 to 9987. [2019-11-07 00:43:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9987 states. [2019-11-07 00:43:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 16352 transitions. [2019-11-07 00:43:31,090 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 16352 transitions. Word has length 127 [2019-11-07 00:43:31,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:31,091 INFO L462 AbstractCegarLoop]: Abstraction has 9987 states and 16352 transitions. [2019-11-07 00:43:31,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:31,091 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 16352 transitions. [2019-11-07 00:43:31,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 00:43:31,097 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:31,097 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:31,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:31,306 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:31,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:31,306 INFO L82 PathProgramCache]: Analyzing trace with hash 474491256, now seen corresponding path program 1 times [2019-11-07 00:43:31,306 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:31,307 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100934696] [2019-11-07 00:43:31,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:43:31,699 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100934696] [2019-11-07 00:43:31,700 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216338241] [2019-11-07 00:43:31,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:32,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 2989 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 00:43:32,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:43:32,297 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:32,402 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:32,402 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 11 [2019-11-07 00:43:32,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445018706] [2019-11-07 00:43:32,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:43:32,403 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:32,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:43:32,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:43:32,404 INFO L87 Difference]: Start difference. First operand 9987 states and 16352 transitions. Second operand 3 states. [2019-11-07 00:43:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:33,492 INFO L93 Difference]: Finished difference Result 27678 states and 45753 transitions. [2019-11-07 00:43:33,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:43:33,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2019-11-07 00:43:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:33,634 INFO L225 Difference]: With dead ends: 27678 [2019-11-07 00:43:33,634 INFO L226 Difference]: Without dead ends: 17810 [2019-11-07 00:43:33,689 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:43:33,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17810 states. [2019-11-07 00:43:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17810 to 17644. [2019-11-07 00:43:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17644 states. [2019-11-07 00:43:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17644 states to 17644 states and 28913 transitions. [2019-11-07 00:43:34,439 INFO L78 Accepts]: Start accepts. Automaton has 17644 states and 28913 transitions. Word has length 132 [2019-11-07 00:43:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:34,439 INFO L462 AbstractCegarLoop]: Abstraction has 17644 states and 28913 transitions. [2019-11-07 00:43:34,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:43:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 17644 states and 28913 transitions. [2019-11-07 00:43:34,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 00:43:34,446 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:34,446 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:34,786 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:34,787 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:34,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:34,787 INFO L82 PathProgramCache]: Analyzing trace with hash -805372422, now seen corresponding path program 1 times [2019-11-07 00:43:34,787 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:34,787 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457771273] [2019-11-07 00:43:34,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:43:34,982 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457771273] [2019-11-07 00:43:34,983 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507648427] [2019-11-07 00:43:34,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:35,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:43:35,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:43:35,598 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:35,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:43:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:35,862 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:35,863 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-11-07 00:43:35,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937262299] [2019-11-07 00:43:35,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:43:35,864 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:35,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:43:35,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:43:35,865 INFO L87 Difference]: Start difference. First operand 17644 states and 28913 transitions. Second operand 11 states. [2019-11-07 00:43:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:40,629 INFO L93 Difference]: Finished difference Result 44110 states and 73008 transitions. [2019-11-07 00:43:40,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 00:43:40,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 132 [2019-11-07 00:43:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:40,803 INFO L225 Difference]: With dead ends: 44110 [2019-11-07 00:43:40,804 INFO L226 Difference]: Without dead ends: 26500 [2019-11-07 00:43:40,879 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 256 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:43:40,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26500 states. [2019-11-07 00:43:41,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26500 to 26428. [2019-11-07 00:43:41,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26428 states. [2019-11-07 00:43:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26428 states to 26428 states and 43046 transitions. [2019-11-07 00:43:41,872 INFO L78 Accepts]: Start accepts. Automaton has 26428 states and 43046 transitions. Word has length 132 [2019-11-07 00:43:41,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:41,872 INFO L462 AbstractCegarLoop]: Abstraction has 26428 states and 43046 transitions. [2019-11-07 00:43:41,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:43:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 26428 states and 43046 transitions. [2019-11-07 00:43:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 00:43:41,876 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:41,876 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:43:42,083 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:42,083 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:42,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash 757651711, now seen corresponding path program 1 times [2019-11-07 00:43:42,084 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:42,084 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681862549] [2019-11-07 00:43:42,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:42,333 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681862549] [2019-11-07 00:43:42,333 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:42,334 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:42,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021190774] [2019-11-07 00:43:42,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:42,335 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:42,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:42,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:42,335 INFO L87 Difference]: Start difference. First operand 26428 states and 43046 transitions. Second operand 4 states. [2019-11-07 00:43:43,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:43,139 INFO L93 Difference]: Finished difference Result 52888 states and 87022 transitions. [2019-11-07 00:43:43,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:43,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2019-11-07 00:43:43,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:43,391 INFO L225 Difference]: With dead ends: 52888 [2019-11-07 00:43:43,391 INFO L226 Difference]: Without dead ends: 26494 [2019-11-07 00:43:43,508 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:43,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26494 states.