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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:20:40,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:20:40,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:20:40,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:20:40,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:20:40,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:20:40,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:20:40,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:20:40,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:20:40,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:20:40,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:20:40,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:20:40,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:20:40,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:20:40,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:20:40,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:20:40,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:20:40,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:20:40,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:20:40,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:20:40,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:20:40,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:20:40,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:20:40,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:20:40,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:20:40,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:20:40,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:20:40,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:20:40,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:20:40,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:20:40,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:20:40,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:20:40,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:20:40,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:20:40,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:20:40,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:20:40,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:20:40,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:20:40,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:20:40,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:20:40,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:20:40,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 14:20:40,149 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:20:40,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:20:40,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:20:40,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:20:40,151 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:20:40,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:20:40,151 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:20:40,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:20:40,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:20:40,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:20:40,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:20:40,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:20:40,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:20:40,153 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:20:40,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:20:40,153 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:20:40,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:20:40,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:20:40,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:20:40,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:20:40,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:20:40,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:20:40,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:20:40,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:20:40,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:20:40,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:20:40,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:20:40,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:20:40,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 14:20:40,452 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:20:40,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:20:40,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:20:40,470 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:20:40,471 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:20:40,472 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product29.cil.c [2019-10-07 14:20:40,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8dd23c75/c9ece3ea86c9435f966649a5169ce7cf/FLAG012fdbe15 [2019-10-07 14:20:41,194 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:20:41,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product29.cil.c [2019-10-07 14:20:41,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8dd23c75/c9ece3ea86c9435f966649a5169ce7cf/FLAG012fdbe15 [2019-10-07 14:20:41,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8dd23c75/c9ece3ea86c9435f966649a5169ce7cf [2019-10-07 14:20:41,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:20:41,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:20:41,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:20:41,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:20:41,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:20:41,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:20:41" (1/1) ... [2019-10-07 14:20:41,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4837be06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:20:41, skipping insertion in model container [2019-10-07 14:20:41,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:20:41" (1/1) ... [2019-10-07 14:20:41,394 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:20:41,472 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:20:42,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:20:42,319 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:20:42,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:20:42,596 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:20:42,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:20:42 WrapperNode [2019-10-07 14:20:42,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:20:42,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:20:42,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:20:42,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:20:42,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:20:42" (1/1) ... [2019-10-07 14:20:42,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:20:42" (1/1) ... [2019-10-07 14:20:42,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:20:42" (1/1) ... [2019-10-07 14:20:42,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:20:42" (1/1) ... [2019-10-07 14:20:42,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:20:42" (1/1) ... [2019-10-07 14:20:42,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:20:42" (1/1) ... [2019-10-07 14:20:42,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:20:42" (1/1) ... [2019-10-07 14:20:42,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:20:42,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:20:42,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:20:42,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:20:42,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:20:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:20:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:20:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:20:42,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:20:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:20:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:20:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:20:42,914 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:20:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:20:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:20:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:20:42,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:20:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:20:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:20:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:20:42,916 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:20:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:20:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:20:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:20:42,917 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:20:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-07 14:20:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:20:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:20:42,918 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:20:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:20:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:20:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:20:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:20:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:20:42,919 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:20:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:20:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:20:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:20:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:20:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:20:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:20:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:20:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:20:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:20:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:20:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:20:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:20:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:20:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:20:42,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:20:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:20:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:20:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:20:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:20:42,923 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:20:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:20:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:20:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:20:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:20:42,924 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:20:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:20:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:20:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:20:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:20:42,925 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:20:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:20:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:20:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:20:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:20:42,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:20:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:20:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:20:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:20:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:20:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:20:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:20:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:20:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:20:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:20:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:20:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:20:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:20:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:20:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:20:42,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:20:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:20:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:20:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:20:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:20:42,930 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:20:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:20:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:20:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:20:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:20:42,931 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:20:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:20:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:20:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:20:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:20:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:20:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:20:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:20:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:20:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:20:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:20:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:20:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:20:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:20:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:20:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:20:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:20:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:20:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:20:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:20:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-07 14:20:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:20:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:20:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:20:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:20:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:20:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:20:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:20:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:20:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:20:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:20:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:20:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:20:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:20:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:20:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:20:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:20:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:20:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:20:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:20:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:20:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:20:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:20:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:20:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:20:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:20:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:20:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:20:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:20:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:20:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:20:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:20:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:20:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:20:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:20:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:20:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:20:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:20:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:20:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:20:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:20:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:20:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:20:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:20:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:20:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:20:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:20:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:20:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:20:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:20:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:20:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:20:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:20:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:20:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:20:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:20:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:20:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:20:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:20:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:20:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:20:47,771 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:20:47,771 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:20:47,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:20:47 BoogieIcfgContainer [2019-10-07 14:20:47,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:20:47,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:20:47,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:20:47,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:20:47,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:20:41" (1/3) ... [2019-10-07 14:20:47,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9b23a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:20:47, skipping insertion in model container [2019-10-07 14:20:47,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:20:42" (2/3) ... [2019-10-07 14:20:47,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9b23a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:20:47, skipping insertion in model container [2019-10-07 14:20:47,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:20:47" (3/3) ... [2019-10-07 14:20:47,780 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product29.cil.c [2019-10-07 14:20:47,791 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:20:47,805 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:20:47,818 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:20:47,849 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:20:47,849 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:20:47,850 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:20:47,850 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:20:47,850 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:20:47,850 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:20:47,850 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:20:47,850 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:20:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states. [2019-10-07 14:20:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-07 14:20:47,906 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:47,908 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:20:47,910 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:47,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:47,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1929205002, now seen corresponding path program 1 times [2019-10-07 14:20:47,925 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:47,926 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:47,926 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:47,926 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:20:48,673 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:48,674 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:20:48,675 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 14:20:48,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:20:48,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:20:48,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:20:48,700 INFO L87 Difference]: Start difference. First operand 574 states. Second operand 9 states. [2019-10-07 14:20:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:54,147 INFO L93 Difference]: Finished difference Result 1415 states and 2165 transitions. [2019-10-07 14:20:54,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-07 14:20:54,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-10-07 14:20:54,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:54,180 INFO L225 Difference]: With dead ends: 1415 [2019-10-07 14:20:54,180 INFO L226 Difference]: Without dead ends: 989 [2019-10-07 14:20:54,192 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:20:54,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2019-10-07 14:20:54,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 957. [2019-10-07 14:20:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2019-10-07 14:20:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1460 transitions. [2019-10-07 14:20:54,382 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1460 transitions. Word has length 106 [2019-10-07 14:20:54,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:54,383 INFO L462 AbstractCegarLoop]: Abstraction has 957 states and 1460 transitions. [2019-10-07 14:20:54,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:20:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1460 transitions. [2019-10-07 14:20:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-07 14:20:54,392 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:54,393 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:20:54,393 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:54,394 INFO L82 PathProgramCache]: Analyzing trace with hash 184369952, now seen corresponding path program 1 times [2019-10-07 14:20:54,394 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:54,394 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:54,394 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:54,395 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:20:54,770 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:54,770 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:20:54,770 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:20:54,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:20:54,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:20:54,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:54,783 INFO L87 Difference]: Start difference. First operand 957 states and 1460 transitions. Second operand 7 states. [2019-10-07 14:20:54,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:54,910 INFO L93 Difference]: Finished difference Result 1530 states and 2349 transitions. [2019-10-07 14:20:54,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:20:54,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2019-10-07 14:20:54,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:54,924 INFO L225 Difference]: With dead ends: 1530 [2019-10-07 14:20:54,924 INFO L226 Difference]: Without dead ends: 994 [2019-10-07 14:20:54,928 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2019-10-07 14:20:55,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 978. [2019-10-07 14:20:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2019-10-07 14:20:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1490 transitions. [2019-10-07 14:20:55,032 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1490 transitions. Word has length 111 [2019-10-07 14:20:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:55,033 INFO L462 AbstractCegarLoop]: Abstraction has 978 states and 1490 transitions. [2019-10-07 14:20:55,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:20:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1490 transitions. [2019-10-07 14:20:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-07 14:20:55,038 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:55,038 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:55,038 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:55,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1325589972, now seen corresponding path program 1 times [2019-10-07 14:20:55,039 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:55,039 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:55,039 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:55,039 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:55,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:20:55,245 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:55,245 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:20:55,246 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:20:55,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:20:55,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:20:55,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:55,247 INFO L87 Difference]: Start difference. First operand 978 states and 1490 transitions. Second operand 7 states. [2019-10-07 14:20:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:55,344 INFO L93 Difference]: Finished difference Result 1559 states and 2387 transitions. [2019-10-07 14:20:55,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:20:55,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-07 14:20:55,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:55,353 INFO L225 Difference]: With dead ends: 1559 [2019-10-07 14:20:55,353 INFO L226 Difference]: Without dead ends: 1009 [2019-10-07 14:20:55,356 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:55,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2019-10-07 14:20:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 981. [2019-10-07 14:20:55,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2019-10-07 14:20:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1493 transitions. [2019-10-07 14:20:55,429 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1493 transitions. Word has length 112 [2019-10-07 14:20:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:55,432 INFO L462 AbstractCegarLoop]: Abstraction has 981 states and 1493 transitions. [2019-10-07 14:20:55,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:20:55,432 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1493 transitions. [2019-10-07 14:20:55,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-07 14:20:55,436 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:55,436 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:55,436 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:55,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:55,437 INFO L82 PathProgramCache]: Analyzing trace with hash 141031500, now seen corresponding path program 1 times [2019-10-07 14:20:55,437 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:55,437 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:55,437 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:55,437 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:20:55,711 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:55,711 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:20:55,711 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:20:55,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:20:55,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:20:55,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:55,713 INFO L87 Difference]: Start difference. First operand 981 states and 1493 transitions. Second operand 7 states. [2019-10-07 14:20:55,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:20:55,804 INFO L93 Difference]: Finished difference Result 1564 states and 2392 transitions. [2019-10-07 14:20:55,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:20:55,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-07 14:20:55,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:20:55,815 INFO L225 Difference]: With dead ends: 1564 [2019-10-07 14:20:55,815 INFO L226 Difference]: Without dead ends: 1012 [2019-10-07 14:20:55,819 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2019-10-07 14:20:55,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 984. [2019-10-07 14:20:55,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2019-10-07 14:20:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1496 transitions. [2019-10-07 14:20:55,883 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1496 transitions. Word has length 112 [2019-10-07 14:20:55,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:20:55,885 INFO L462 AbstractCegarLoop]: Abstraction has 984 states and 1496 transitions. [2019-10-07 14:20:55,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:20:55,885 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1496 transitions. [2019-10-07 14:20:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-07 14:20:55,889 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:20:55,890 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:20:55,890 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:20:55,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:20:55,890 INFO L82 PathProgramCache]: Analyzing trace with hash 631146580, now seen corresponding path program 1 times [2019-10-07 14:20:55,891 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:20:55,891 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:55,891 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:55,891 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:20:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:20:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:20:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:20:56,149 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:20:56,149 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:20:56,149 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:20:56,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:20:56,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:20:56,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:20:56,150 INFO L87 Difference]: Start difference. First operand 984 states and 1496 transitions. Second operand 7 states. [2019-10-07 14:21:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:00,332 INFO L93 Difference]: Finished difference Result 2108 states and 3225 transitions. [2019-10-07 14:21:00,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:21:00,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-10-07 14:21:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:00,344 INFO L225 Difference]: With dead ends: 2108 [2019-10-07 14:21:00,345 INFO L226 Difference]: Without dead ends: 1429 [2019-10-07 14:21:00,351 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:21:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2019-10-07 14:21:00,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1379. [2019-10-07 14:21:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2019-10-07 14:21:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2057 transitions. [2019-10-07 14:21:00,456 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2057 transitions. Word has length 116 [2019-10-07 14:21:00,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:00,457 INFO L462 AbstractCegarLoop]: Abstraction has 1379 states and 2057 transitions. [2019-10-07 14:21:00,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:21:00,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2057 transitions. [2019-10-07 14:21:00,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-07 14:21:00,465 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:00,465 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:21:00,466 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:00,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:00,466 INFO L82 PathProgramCache]: Analyzing trace with hash 716619123, now seen corresponding path program 1 times [2019-10-07 14:21:00,466 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:00,467 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:00,467 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:00,467 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:21:00,793 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:00,794 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:00,794 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 14:21:00,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:21:00,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:21:00,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:21:00,796 INFO L87 Difference]: Start difference. First operand 1379 states and 2057 transitions. Second operand 9 states. [2019-10-07 14:21:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:01,142 INFO L93 Difference]: Finished difference Result 2681 states and 4102 transitions. [2019-10-07 14:21:01,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 14:21:01,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 118 [2019-10-07 14:21:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:01,159 INFO L225 Difference]: With dead ends: 2681 [2019-10-07 14:21:01,160 INFO L226 Difference]: Without dead ends: 1583 [2019-10-07 14:21:01,170 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:21:01,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2019-10-07 14:21:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2019-10-07 14:21:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2019-10-07 14:21:01,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2361 transitions. [2019-10-07 14:21:01,276 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2361 transitions. Word has length 118 [2019-10-07 14:21:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:01,277 INFO L462 AbstractCegarLoop]: Abstraction has 1583 states and 2361 transitions. [2019-10-07 14:21:01,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:21:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2361 transitions. [2019-10-07 14:21:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:21:01,280 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:01,281 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:21:01,281 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:01,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:01,281 INFO L82 PathProgramCache]: Analyzing trace with hash -164315477, now seen corresponding path program 1 times [2019-10-07 14:21:01,282 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:01,282 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:01,282 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:01,282 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:01,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:21:01,534 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:01,534 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:01,534 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 14:21:01,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:21:01,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:21:01,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 14:21:01,537 INFO L87 Difference]: Start difference. First operand 1583 states and 2361 transitions. Second operand 6 states. [2019-10-07 14:21:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:06,062 INFO L93 Difference]: Finished difference Result 6480 states and 10045 transitions. [2019-10-07 14:21:06,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 14:21:06,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-10-07 14:21:06,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:06,113 INFO L225 Difference]: With dead ends: 6480 [2019-10-07 14:21:06,113 INFO L226 Difference]: Without dead ends: 4940 [2019-10-07 14:21:06,127 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:21:06,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2019-10-07 14:21:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 4565. [2019-10-07 14:21:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4565 states. [2019-10-07 14:21:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 6964 transitions. [2019-10-07 14:21:06,432 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 6964 transitions. Word has length 119 [2019-10-07 14:21:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:06,433 INFO L462 AbstractCegarLoop]: Abstraction has 4565 states and 6964 transitions. [2019-10-07 14:21:06,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:21:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 6964 transitions. [2019-10-07 14:21:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-07 14:21:06,437 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:06,438 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:21:06,438 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:06,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:06,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2015129963, now seen corresponding path program 1 times [2019-10-07 14:21:06,439 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:06,439 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:06,439 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:06,439 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:21:06,622 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:06,622 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:06,622 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:21:06,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:21:06,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:21:06,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:21:06,624 INFO L87 Difference]: Start difference. First operand 4565 states and 6964 transitions. Second operand 7 states. [2019-10-07 14:21:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:10,709 INFO L93 Difference]: Finished difference Result 8185 states and 12553 transitions. [2019-10-07 14:21:10,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 14:21:10,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2019-10-07 14:21:10,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:10,767 INFO L225 Difference]: With dead ends: 8185 [2019-10-07 14:21:10,768 INFO L226 Difference]: Without dead ends: 4735 [2019-10-07 14:21:10,795 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:21:10,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4735 states. [2019-10-07 14:21:11,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4735 to 4649. [2019-10-07 14:21:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4649 states. [2019-10-07 14:21:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 7070 transitions. [2019-10-07 14:21:11,190 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 7070 transitions. Word has length 121 [2019-10-07 14:21:11,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:11,191 INFO L462 AbstractCegarLoop]: Abstraction has 4649 states and 7070 transitions. [2019-10-07 14:21:11,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:21:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 7070 transitions. [2019-10-07 14:21:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:21:11,197 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:11,198 INFO L385 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] [2019-10-07 14:21:11,198 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:11,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:11,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1180174355, now seen corresponding path program 1 times [2019-10-07 14:21:11,199 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:11,199 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:11,200 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:11,200 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:21:11,456 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:11,456 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:11,456 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:21:11,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:11,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:11,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:21:11,459 INFO L87 Difference]: Start difference. First operand 4649 states and 7070 transitions. Second operand 4 states. [2019-10-07 14:21:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:13,993 INFO L93 Difference]: Finished difference Result 14021 states and 21673 transitions. [2019-10-07 14:21:13,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:13,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-07 14:21:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:14,086 INFO L225 Difference]: With dead ends: 14021 [2019-10-07 14:21:14,086 INFO L226 Difference]: Without dead ends: 9415 [2019-10-07 14:21:14,123 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:14,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9415 states. [2019-10-07 14:21:14,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9415 to 9107. [2019-10-07 14:21:14,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9107 states. [2019-10-07 14:21:14,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9107 states to 9107 states and 13991 transitions. [2019-10-07 14:21:14,840 INFO L78 Accepts]: Start accepts. Automaton has 9107 states and 13991 transitions. Word has length 125 [2019-10-07 14:21:14,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:14,843 INFO L462 AbstractCegarLoop]: Abstraction has 9107 states and 13991 transitions. [2019-10-07 14:21:14,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:14,843 INFO L276 IsEmpty]: Start isEmpty. Operand 9107 states and 13991 transitions. [2019-10-07 14:21:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:21:14,849 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:14,849 INFO L385 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] [2019-10-07 14:21:14,850 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:14,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:14,851 INFO L82 PathProgramCache]: Analyzing trace with hash 225216974, now seen corresponding path program 1 times [2019-10-07 14:21:14,851 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:14,851 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:14,851 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:14,852 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:21:15,094 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:15,094 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:15,094 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:21:15,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:15,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:15,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:21:15,096 INFO L87 Difference]: Start difference. First operand 9107 states and 13991 transitions. Second operand 4 states. [2019-10-07 14:21:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:18,085 INFO L93 Difference]: Finished difference Result 27379 states and 42973 transitions. [2019-10-07 14:21:18,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:18,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-07 14:21:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:18,217 INFO L225 Difference]: With dead ends: 27379 [2019-10-07 14:21:18,217 INFO L226 Difference]: Without dead ends: 18316 [2019-10-07 14:21:18,279 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:18,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18316 states. [2019-10-07 14:21:19,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18316 to 17921. [2019-10-07 14:21:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17921 states. [2019-10-07 14:21:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17921 states to 17921 states and 27860 transitions. [2019-10-07 14:21:19,323 INFO L78 Accepts]: Start accepts. Automaton has 17921 states and 27860 transitions. Word has length 125 [2019-10-07 14:21:19,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:19,324 INFO L462 AbstractCegarLoop]: Abstraction has 17921 states and 27860 transitions. [2019-10-07 14:21:19,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 17921 states and 27860 transitions. [2019-10-07 14:21:19,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-07 14:21:19,331 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:19,331 INFO L385 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] [2019-10-07 14:21:19,332 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:19,333 INFO L82 PathProgramCache]: Analyzing trace with hash 234334197, now seen corresponding path program 1 times [2019-10-07 14:21:19,333 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:19,334 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:19,334 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:19,334 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:21:19,761 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:19,761 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:19,761 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:21:19,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:19,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:19,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:21:19,763 INFO L87 Difference]: Start difference. First operand 17921 states and 27860 transitions. Second operand 4 states. [2019-10-07 14:21:22,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:22,610 INFO L93 Difference]: Finished difference Result 54043 states and 86881 transitions. [2019-10-07 14:21:22,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:22,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-07 14:21:22,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:22,853 INFO L225 Difference]: With dead ends: 54043 [2019-10-07 14:21:22,854 INFO L226 Difference]: Without dead ends: 36168 [2019-10-07 14:21:22,930 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:22,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36168 states. [2019-10-07 14:21:24,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36168 to 35608. [2019-10-07 14:21:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35608 states. [2019-10-07 14:21:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35608 states to 35608 states and 56466 transitions. [2019-10-07 14:21:24,856 INFO L78 Accepts]: Start accepts. Automaton has 35608 states and 56466 transitions. Word has length 127 [2019-10-07 14:21:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:24,856 INFO L462 AbstractCegarLoop]: Abstraction has 35608 states and 56466 transitions. [2019-10-07 14:21:24,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand 35608 states and 56466 transitions. [2019-10-07 14:21:24,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-07 14:21:24,860 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:24,861 INFO L385 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] [2019-10-07 14:21:24,861 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:24,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:24,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1326874758, now seen corresponding path program 1 times [2019-10-07 14:21:24,862 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:24,862 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:24,862 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:24,862 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:21:25,016 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:25,016 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:25,016 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:21:25,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:25,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:25,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:21:25,017 INFO L87 Difference]: Start difference. First operand 35608 states and 56466 transitions. Second operand 4 states. [2019-10-07 14:21:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:29,952 INFO L93 Difference]: Finished difference Result 107570 states and 179922 transitions. [2019-10-07 14:21:29,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:29,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-10-07 14:21:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:30,620 INFO L225 Difference]: With dead ends: 107570 [2019-10-07 14:21:30,621 INFO L226 Difference]: Without dead ends: 72012 [2019-10-07 14:21:30,750 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72012 states. [2019-10-07 14:21:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72012 to 71111. [2019-10-07 14:21:33,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71111 states. [2019-10-07 14:21:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71111 states to 71111 states and 116540 transitions. [2019-10-07 14:21:36,860 INFO L78 Accepts]: Start accepts. Automaton has 71111 states and 116540 transitions. Word has length 128 [2019-10-07 14:21:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:36,861 INFO L462 AbstractCegarLoop]: Abstraction has 71111 states and 116540 transitions. [2019-10-07 14:21:36,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:36,861 INFO L276 IsEmpty]: Start isEmpty. Operand 71111 states and 116540 transitions. [2019-10-07 14:21:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-07 14:21:36,864 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:36,865 INFO L385 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] [2019-10-07 14:21:36,865 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:36,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:36,865 INFO L82 PathProgramCache]: Analyzing trace with hash -594964767, now seen corresponding path program 1 times [2019-10-07 14:21:36,866 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:36,866 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:36,866 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:36,866 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:21:36,997 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:36,997 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:36,998 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:21:36,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:36,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:36,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:21:36,999 INFO L87 Difference]: Start difference. First operand 71111 states and 116540 transitions. Second operand 4 states. [2019-10-07 14:21:45,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:45,424 INFO L93 Difference]: Finished difference Result 215121 states and 383462 transitions. [2019-10-07 14:21:45,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:45,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-10-07 14:21:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:46,717 INFO L225 Difference]: With dead ends: 215121 [2019-10-07 14:21:46,718 INFO L226 Difference]: Without dead ends: 144056 [2019-10-07 14:21:46,881 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:46,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144056 states. [2019-10-07 14:21:55,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144056 to 141592. [2019-10-07 14:21:55,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141592 states. [2019-10-07 14:21:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141592 states to 141592 states and 241397 transitions. [2019-10-07 14:21:56,760 INFO L78 Accepts]: Start accepts. Automaton has 141592 states and 241397 transitions. Word has length 128 [2019-10-07 14:21:56,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:56,761 INFO L462 AbstractCegarLoop]: Abstraction has 141592 states and 241397 transitions. [2019-10-07 14:21:56,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:56,761 INFO L276 IsEmpty]: Start isEmpty. Operand 141592 states and 241397 transitions. [2019-10-07 14:21:56,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-07 14:21:56,768 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:56,768 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:21:56,768 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:56,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:56,769 INFO L82 PathProgramCache]: Analyzing trace with hash 694294005, now seen corresponding path program 1 times [2019-10-07 14:21:56,769 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:56,769 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:56,769 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:56,770 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:56,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:21:56,930 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:56,931 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:21:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:21:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:57,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 3391 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:21:57,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:21:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 14:21:57,658 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:21:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:21:58,105 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:21:58,105 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-07 14:21:58,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:58,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:58,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:21:58,107 INFO L87 Difference]: Start difference. First operand 141592 states and 241397 transitions. Second operand 4 states. [2019-10-07 14:22:09,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:09,955 INFO L93 Difference]: Finished difference Result 294373 states and 518297 transitions. [2019-10-07 14:22:09,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:22:09,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2019-10-07 14:22:09,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:11,187 INFO L225 Difference]: With dead ends: 294373 [2019-10-07 14:22:11,188 INFO L226 Difference]: Without dead ends: 152824 [2019-10-07 14:22:11,717 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 351 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:22:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152824 states. [2019-10-07 14:22:26,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152824 to 152824. [2019-10-07 14:22:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152824 states. [2019-10-07 14:22:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152824 states to 152824 states and 262421 transitions. [2019-10-07 14:22:27,337 INFO L78 Accepts]: Start accepts. Automaton has 152824 states and 262421 transitions. Word has length 176 [2019-10-07 14:22:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:27,338 INFO L462 AbstractCegarLoop]: Abstraction has 152824 states and 262421 transitions. [2019-10-07 14:22:27,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:22:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 152824 states and 262421 transitions. [2019-10-07 14:22:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-07 14:22:27,351 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:27,352 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:22:27,561 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:22:27,562 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:27,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:27,562 INFO L82 PathProgramCache]: Analyzing trace with hash -157026114, now seen corresponding path program 1 times [2019-10-07 14:22:27,562 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:27,563 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:27,563 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:27,563 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:22:27,743 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:27,743 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:22:27,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:22:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:28,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 3396 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:22:28,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:22:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-07 14:22:28,408 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:22:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:22:28,797 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:22:28,798 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:22:28,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:22:28,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:22:28,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:22:28,799 INFO L87 Difference]: Start difference. First operand 152824 states and 262421 transitions. Second operand 4 states. [2019-10-07 14:22:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:35,916 INFO L93 Difference]: Finished difference Result 316837 states and 560051 transitions. [2019-10-07 14:22:35,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:22:35,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2019-10-07 14:22:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:36,891 INFO L225 Difference]: With dead ends: 316837 [2019-10-07 14:22:36,891 INFO L226 Difference]: Without dead ends: 164056 [2019-10-07 14:22:37,233 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 359 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:22:37,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164056 states. [2019-10-07 14:22:48,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164056 to 164056. [2019-10-07 14:22:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164056 states. [2019-10-07 14:22:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164056 states to 164056 states and 283445 transitions. [2019-10-07 14:22:49,942 INFO L78 Accepts]: Start accepts. Automaton has 164056 states and 283445 transitions. Word has length 181 [2019-10-07 14:22:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:49,942 INFO L462 AbstractCegarLoop]: Abstraction has 164056 states and 283445 transitions. [2019-10-07 14:22:49,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:22:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 164056 states and 283445 transitions. [2019-10-07 14:22:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-07 14:22:49,952 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:49,952 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:22:50,162 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:22:50,162 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:50,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:50,163 INFO L82 PathProgramCache]: Analyzing trace with hash -245194194, now seen corresponding path program 1 times [2019-10-07 14:22:50,163 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:50,163 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:50,163 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:50,163 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-07 14:22:50,334 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:50,334 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:22:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:22:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:50,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 3400 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:22:51,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:22:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-07 14:22:51,033 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:22:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-07 14:22:51,486 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:22:51,486 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:22:51,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:22:51,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:22:51,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:22:51,488 INFO L87 Difference]: Start difference. First operand 164056 states and 283445 transitions. Second operand 4 states. [2019-10-07 14:23:03,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:03,579 INFO L93 Difference]: Finished difference Result 339301 states and 601805 transitions. [2019-10-07 14:23:03,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:03,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2019-10-07 14:23:03,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:04,440 INFO L225 Difference]: With dead ends: 339301 [2019-10-07 14:23:04,440 INFO L226 Difference]: Without dead ends: 175288 [2019-10-07 14:23:05,220 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 367 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:23:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175288 states. [2019-10-07 14:23:11,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175288 to 175288. [2019-10-07 14:23:11,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175288 states. [2019-10-07 14:23:12,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175288 states to 175288 states and 304469 transitions. [2019-10-07 14:23:12,515 INFO L78 Accepts]: Start accepts. Automaton has 175288 states and 304469 transitions. Word has length 185 [2019-10-07 14:23:12,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:12,515 INFO L462 AbstractCegarLoop]: Abstraction has 175288 states and 304469 transitions. [2019-10-07 14:23:12,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:23:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand 175288 states and 304469 transitions. [2019-10-07 14:23:12,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-07 14:23:12,526 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:12,526 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:12,729 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:12,730 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:12,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:12,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1320723531, now seen corresponding path program 1 times [2019-10-07 14:23:12,731 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:12,731 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:12,731 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:12,731 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:12,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:23:12,904 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:12,904 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:13,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 3403 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:23:13,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:23:13,942 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:23:14,353 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:23:14,353 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:23:14,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:23:14,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:23:14,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:23:14,362 INFO L87 Difference]: Start difference. First operand 175288 states and 304469 transitions. Second operand 4 states. [2019-10-07 14:23:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:24,261 INFO L93 Difference]: Finished difference Result 361765 states and 643559 transitions. [2019-10-07 14:23:24,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:24,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 188 [2019-10-07 14:23:24,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:25,011 INFO L225 Difference]: With dead ends: 361765 [2019-10-07 14:23:25,012 INFO L226 Difference]: Without dead ends: 186520 [2019-10-07 14:23:25,368 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 373 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:23:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186520 states. [2019-10-07 14:23:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186520 to 186520. [2019-10-07 14:23:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186520 states. [2019-10-07 14:23:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186520 states to 186520 states and 325493 transitions. [2019-10-07 14:23:34,252 INFO L78 Accepts]: Start accepts. Automaton has 186520 states and 325493 transitions. Word has length 188 [2019-10-07 14:23:34,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:34,253 INFO L462 AbstractCegarLoop]: Abstraction has 186520 states and 325493 transitions. [2019-10-07 14:23:34,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:23:34,253 INFO L276 IsEmpty]: Start isEmpty. Operand 186520 states and 325493 transitions. [2019-10-07 14:23:34,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-07 14:23:34,257 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:34,258 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:34,459 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:34,460 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:34,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:34,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1648160711, now seen corresponding path program 1 times [2019-10-07 14:23:34,461 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:34,461 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:34,462 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:34,462 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:23:34,695 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:34,695 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:40,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 14:23:40,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:23:41,071 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:23:41,483 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:23:41,483 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [9] total 16 [2019-10-07 14:23:41,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:23:41,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:23:41,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:23:41,484 INFO L87 Difference]: Start difference. First operand 186520 states and 325493 transitions. Second operand 9 states. [2019-10-07 14:23:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:47,156 INFO L93 Difference]: Finished difference Result 189382 states and 347564 transitions. [2019-10-07 14:23:47,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:23:47,157 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 190 [2019-10-07 14:23:47,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:48,067 INFO L225 Difference]: With dead ends: 189382 [2019-10-07 14:23:48,067 INFO L226 Difference]: Without dead ends: 189163 [2019-10-07 14:23:48,175 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 377 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2019-10-07 14:23:48,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189163 states. [2019-10-07 14:23:55,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189163 to 187480. [2019-10-07 14:23:55,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187480 states. [2019-10-07 14:23:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187480 states to 187480 states and 332703 transitions. [2019-10-07 14:23:56,042 INFO L78 Accepts]: Start accepts. Automaton has 187480 states and 332703 transitions. Word has length 190 [2019-10-07 14:23:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:56,042 INFO L462 AbstractCegarLoop]: Abstraction has 187480 states and 332703 transitions. [2019-10-07 14:23:56,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:23:56,042 INFO L276 IsEmpty]: Start isEmpty. Operand 187480 states and 332703 transitions. [2019-10-07 14:23:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-07 14:23:56,048 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:56,048 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:56,249 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:56,249 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:56,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:56,250 INFO L82 PathProgramCache]: Analyzing trace with hash -906244746, now seen corresponding path program 1 times [2019-10-07 14:23:56,250 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:56,251 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:56,251 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:56,251 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:56,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:24:01,868 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:01,868 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:02,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 3414 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:24:02,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:24:02,700 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:24:03,164 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:03,165 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [9] total 12 [2019-10-07 14:24:03,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:24:03,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:24:03,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:24:03,168 INFO L87 Difference]: Start difference. First operand 187480 states and 332703 transitions. Second operand 5 states. [2019-10-07 14:24:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:07,248 INFO L93 Difference]: Finished difference Result 187699 states and 332947 transitions. [2019-10-07 14:24:07,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:24:07,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2019-10-07 14:24:07,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:08,358 INFO L225 Difference]: With dead ends: 187699 [2019-10-07 14:24:08,358 INFO L226 Difference]: Without dead ends: 187480 [2019-10-07 14:24:08,434 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 391 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:24:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187480 states. [2019-10-07 14:24:15,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187480 to 187480. [2019-10-07 14:24:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187480 states. [2019-10-07 14:24:16,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187480 states to 187480 states and 332424 transitions. [2019-10-07 14:24:16,354 INFO L78 Accepts]: Start accepts. Automaton has 187480 states and 332424 transitions. Word has length 195 [2019-10-07 14:24:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:16,355 INFO L462 AbstractCegarLoop]: Abstraction has 187480 states and 332424 transitions. [2019-10-07 14:24:16,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:24:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 187480 states and 332424 transitions. [2019-10-07 14:24:16,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-07 14:24:16,363 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:16,363 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:16,571 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:16,572 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:16,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:16,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1043190268, now seen corresponding path program 1 times [2019-10-07 14:24:16,574 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:16,574 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:16,574 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:16,574 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:16,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:24:16,790 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:16,790 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:18,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 3457 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-07 14:24:18,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-07 14:24:18,621 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:19,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:19,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:19,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:19,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:24:19,352 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:24:19,398 INFO L162 IcfgInterpreter]: Started Sifa with 176 locations of interest [2019-10-07 14:24:19,398 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:24:19,406 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:24:19,415 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:24:19,416 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:24:57,406 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 762 [2019-10-07 14:25:07,510 WARN L191 SmtUtils]: Spent 7.25 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:25:07,910 WARN L191 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 848 [2019-10-07 14:25:08,512 WARN L191 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 848 [2019-10-07 14:25:09,056 WARN L191 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 848 [2019-10-07 14:25:09,184 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2019-10-07 14:25:09,797 WARN L191 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:25:10,336 WARN L191 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:25:10,814 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:25:11,338 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:25:12,239 WARN L191 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 1038 DAG size of output: 1036 [2019-10-07 14:25:12,716 WARN L191 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:25:13,246 WARN L191 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:25:13,712 WARN L191 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:25:14,179 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:25:14,696 WARN L191 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 1036 [2019-10-07 14:25:14,713 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 388 for LOIs [2019-10-07 14:25:14,907 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 731 [2019-10-07 14:25:15,037 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 731 [2019-10-07 14:25:15,387 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 919 [2019-10-07 14:25:15,389 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1086 for LOIs [2019-10-07 14:25:15,831 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:16,276 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:16,418 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:17,196 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:17,667 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:18,125 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:18,389 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:19,190 WARN L191 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:19,718 WARN L191 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:20,179 WARN L191 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:20,309 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:21,082 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:21,945 WARN L191 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 1258 DAG size of output: 1086 [2019-10-07 14:25:22,412 WARN L191 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:22,552 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:23,347 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:23,820 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:24,273 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:24,399 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:25,179 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:25,628 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:26,078 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:26,201 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:26,976 WARN L191 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:27,435 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:27,896 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:28,017 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:28,797 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:29,246 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:29,692 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:29,819 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:30,584 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:31,041 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:31,485 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:31,608 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:32,375 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:32,826 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:33,288 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:33,412 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:34,181 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:34,637 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:35,080 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:35,200 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:35,961 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:36,417 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:36,871 WARN L191 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:36,995 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:37,763 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:38,212 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:38,669 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1086 [2019-10-07 14:25:38,790 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:39,570 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:40,410 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:41,206 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:41,357 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:42,126 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:44,442 WARN L191 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:25:45,237 WARN L191 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:45,381 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:46,145 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:46,922 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:47,704 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:47,828 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:25:48,605 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:25:50,284 WARN L191 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:51,066 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:51,191 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:25:51,951 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:53,367 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:25:54,133 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:54,266 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:25:55,032 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:56,416 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:25:57,175 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:57,297 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:25:58,058 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:58,816 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:25:59,578 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:25:59,702 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:26:00,460 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:01,214 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:01,977 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:02,105 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:26:02,865 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:26:03,663 WARN L191 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:04,421 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:04,550 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:26:05,317 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:26:06,919 WARN L191 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:26:07,683 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:07,819 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:26:08,591 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:26:09,439 WARN L191 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:10,225 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:10,350 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:26:11,134 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:26:12,538 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:26:13,313 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:13,450 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:26:14,211 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:15,610 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:26:16,379 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:16,514 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:26:17,284 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:18,066 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:18,853 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:18,975 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:26:19,749 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:21,163 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:26:21,935 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:22,067 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:26:22,823 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:24,160 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:26:24,939 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:26:25,070 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:26:25,852 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:27,256 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:26:28,028 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:26:28,153 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:26:28,944 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:30,275 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1267 DAG size of output: 1260 [2019-10-07 14:26:31,063 WARN L191 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:31,194 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:26:31,980 WARN L191 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:33,328 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1269 DAG size of output: 1262 [2019-10-07 14:26:34,105 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:26:34,237 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:26:35,028 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:26:36,463 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:26:37,238 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:37,365 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:26:38,143 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:39,533 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:26:40,307 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:40,440 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:26:41,204 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:41,987 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:42,762 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:42,883 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:26:43,653 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:45,102 WARN L191 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:26:45,902 WARN L191 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:46,037 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:26:46,823 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:48,255 WARN L191 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:26:49,041 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:49,171 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:26:49,948 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:51,408 WARN L191 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:26:52,187 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:52,343 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:26:53,118 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:54,531 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:26:55,338 WARN L191 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:55,471 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:26:56,256 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:57,036 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:57,813 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:26:57,938 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:26:58,725 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:00,160 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:27:00,955 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:01,095 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:27:01,879 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:03,197 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:27:03,979 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:27:04,108 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:27:04,888 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:06,277 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:27:07,059 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:27:07,183 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:27:07,964 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:09,296 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:27:10,074 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:27:10,203 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:27:10,992 WARN L191 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:12,395 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:27:13,180 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:13,312 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:27:14,093 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:27:15,703 WARN L191 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:27:16,478 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:16,614 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:27:17,389 WARN L191 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:18,794 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:27:19,564 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:19,720 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:27:20,496 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:21,280 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:22,057 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:22,178 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:27:22,956 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:23,754 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:24,537 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:24,679 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:27:25,453 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:26,918 WARN L191 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:27:27,698 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:27,827 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:27:28,604 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:30,007 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:27:30,778 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:30,905 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:27:31,691 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:33,132 WARN L191 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:27:33,910 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:34,040 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:27:34,825 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:35,605 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:36,392 WARN L191 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:36,515 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:27:37,319 WARN L191 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:38,690 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:27:39,504 WARN L191 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:27:39,634 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:27:40,418 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:41,783 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:27:42,565 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:27:42,705 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:27:43,488 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:44,272 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:27:45,060 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:27:45,185 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:27:45,969 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:47,306 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:27:48,086 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:27:48,214 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:27:49,008 WARN L191 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:50,590 WARN L191 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:27:51,374 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:51,502 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:27:52,282 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:53,705 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:27:54,488 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:54,626 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:27:55,436 WARN L191 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:56,231 WARN L191 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:57,023 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:57,147 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:27:57,943 WARN L191 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:27:59,312 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:28:00,114 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:28:00,244 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:28:01,046 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:28:02,508 WARN L191 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:28:03,298 WARN L191 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:28:03,435 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:28:04,241 WARN L191 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:28:05,667 WARN L191 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:28:06,465 WARN L191 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:28:06,592 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:28:07,407 WARN L191 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:28:08,779 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:28:09,584 WARN L191 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:28:09,725 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:28:10,520 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:28:11,983 WARN L191 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:28:12,789 WARN L191 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:28:12,920 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:28:13,722 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:28:15,172 WARN L191 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:28:15,973 WARN L191 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:28:16,102 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:28:16,905 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:28:18,343 WARN L191 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:28:19,139 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:28:19,281 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-10-07 14:28:20,077 WARN L191 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:28:20,084 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1110 for LOIs [2019-10-07 14:28:20,584 WARN L191 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:28:21,098 WARN L191 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 1110 [2019-10-07 14:28:21,234 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:28:22,020 WARN L191 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:28:22,586 WARN L191 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:28:23,116 WARN L191 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:28:23,243 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:28:24,029 WARN L191 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:28:24,992 WARN L191 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 1258 DAG size of output: 1120 [2019-10-07 14:28:25,516 WARN L191 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:28:25,652 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:28:26,436 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:28:26,982 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:28:27,516 WARN L191 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:28:27,641 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:28:28,434 WARN L191 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:28:28,963 WARN L191 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:28:29,485 WARN L191 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:28:29,609 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:28:30,393 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:28:30,909 WARN L191 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:28:31,428 WARN L191 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 1120 [2019-10-07 14:28:31,552 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 452 [2019-10-07 14:28:32,348 WARN L191 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:28:32,629 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:32,631 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 14:28:32,637 INFO L168 Benchmark]: Toolchain (without parser) took 471260.90 ms. Allocated memory was 138.9 MB in the beginning and 3.7 GB in the end (delta: 3.5 GB). Free memory was 99.4 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2019-10-07 14:28:32,637 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 14:28:32,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1221.40 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 140.9 MB in the end (delta: -41.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:28:32,638 INFO L168 Benchmark]: Boogie Preprocessor took 254.85 ms. Allocated memory is still 202.4 MB. Free memory was 140.9 MB in the beginning and 131.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-10-07 14:28:32,638 INFO L168 Benchmark]: RCFGBuilder took 4919.11 ms. Allocated memory was 202.4 MB in the beginning and 298.3 MB in the end (delta: 95.9 MB). Free memory was 131.9 MB in the beginning and 209.1 MB in the end (delta: -77.2 MB). Peak memory consumption was 152.4 MB. Max. memory is 7.1 GB. [2019-10-07 14:28:32,639 INFO L168 Benchmark]: TraceAbstraction took 464861.05 ms. Allocated memory was 298.3 MB in the beginning and 3.7 GB in the end (delta: 3.4 GB). Free memory was 209.1 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2019-10-07 14:28:32,640 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1221.40 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 140.9 MB in the end (delta: -41.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 254.85 ms. Allocated memory is still 202.4 MB. Free memory was 140.9 MB in the beginning and 131.9 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4919.11 ms. Allocated memory was 202.4 MB in the beginning and 298.3 MB in the end (delta: 95.9 MB). Free memory was 131.9 MB in the beginning and 209.1 MB in the end (delta: -77.2 MB). Peak memory consumption was 152.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 464861.05 ms. Allocated memory was 298.3 MB in the beginning and 3.7 GB in the end (delta: 3.4 GB). Free memory was 209.1 MB in the beginning and 1.9 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...