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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:22:56,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:22:56,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:22:56,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:22:56,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:22:56,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:22:56,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:22:56,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:22:56,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:22:56,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:22:56,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:22:56,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:22:56,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:22:56,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:22:56,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:22:56,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:22:56,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:22:56,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:22:56,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:22:56,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:22:56,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:22:56,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:22:56,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:22:56,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:22:56,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:22:56,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:22:56,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:22:56,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:22:56,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:22:56,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:22:56,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:22:56,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:22:56,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:22:56,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:22:56,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:22:56,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:22:56,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:22:56,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:22:56,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:22:56,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:22:56,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:22:56,803 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 14:22:56,818 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:22:56,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:22:56,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:22:56,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:22:56,820 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:22:56,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:22:56,821 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:22:56,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:22:56,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:22:56,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:22:56,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:22:56,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:22:56,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:22:56,822 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:22:56,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:22:56,822 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:22:56,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:22:56,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:22:56,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:22:56,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:22:56,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:22:56,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:22:56,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:22:56,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:22:56,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:22:56,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:22:56,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:22:56,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:22:56,825 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 14:22:57,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:22:57,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:22:57,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:22:57,146 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:22:57,147 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:22:57,148 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_productSimulator.cil.c [2019-10-07 14:22:57,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d980175/da0f19ea9ddf43f5b2ffd5014a45f1f3/FLAG6559fb908 [2019-10-07 14:22:57,860 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:22:57,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_productSimulator.cil.c [2019-10-07 14:22:57,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d980175/da0f19ea9ddf43f5b2ffd5014a45f1f3/FLAG6559fb908 [2019-10-07 14:22:58,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d980175/da0f19ea9ddf43f5b2ffd5014a45f1f3 [2019-10-07 14:22:58,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:22:58,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:22:58,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:22:58,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:22:58,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:22:58,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:22:58" (1/1) ... [2019-10-07 14:22:58,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e54d529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:22:58, skipping insertion in model container [2019-10-07 14:22:58,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:22:58" (1/1) ... [2019-10-07 14:22:58,106 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:22:58,198 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:22:58,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:22:58,901 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:22:59,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:22:59,115 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:22:59,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:22:59 WrapperNode [2019-10-07 14:22:59,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:22:59,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:22:59,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:22:59,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:22:59,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:22:59" (1/1) ... [2019-10-07 14:22:59,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:22:59" (1/1) ... [2019-10-07 14:22:59,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:22:59" (1/1) ... [2019-10-07 14:22:59,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:22:59" (1/1) ... [2019-10-07 14:22:59,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:22:59" (1/1) ... [2019-10-07 14:22:59,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:22:59" (1/1) ... [2019-10-07 14:22:59,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:22:59" (1/1) ... [2019-10-07 14:22:59,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:22:59,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:22:59,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:22:59,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:22:59,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:22:59" (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 14:22:59,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:22:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:22:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:22:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:22:59,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:22:59,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:22:59,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:22:59,407 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:22:59,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:22:59,407 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:22:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:22:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:22:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:22:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:22:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:22:59,409 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:22:59,411 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:22:59,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:22:59,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:22:59,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:22:59,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:22:59,412 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:22:59,413 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:22:59,413 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:22:59,413 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:22:59,413 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:22:59,413 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:22:59,413 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:22:59,414 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:22:59,414 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:22:59,414 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:22:59,414 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:22:59,414 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:22:59,415 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:22:59,415 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:22:59,415 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:22:59,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:22:59,415 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:22:59,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:22:59,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:22:59,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:22:59,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:22:59,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:22:59,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:22:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:22:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:22:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:22:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:22:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:22:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:22:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:22:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-07 14:22:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-07 14:22:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:22:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-07 14:22:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-07 14:22:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:22:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-07 14:22:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-07 14:22:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-07 14:22:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-07 14:22:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:22:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:22:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:22:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:22:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:22:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:22:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:22:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:22:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:22:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:22:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-07 14:22:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-07 14:22:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-07 14:22:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-07 14:22:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:22:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:22:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:22:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-07 14:22:59,424 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-07 14:22:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-07 14:22:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-07 14:22:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:22:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:22:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:22:59,425 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-07 14:22:59,426 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-07 14:22:59,426 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:22:59,427 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-07 14:22:59,427 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-07 14:22:59,427 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:22:59,427 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:22:59,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:22:59,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:22:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:22:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:22:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:22:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:22:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:22:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:22:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:22:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:22:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:22:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:22:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:22:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:22:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:22:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:22:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:22:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:22:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:22:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:22:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:22:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:22:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:22:59,431 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:22:59,431 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:22:59,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:22:59,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:22:59,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:22:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:22:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:22:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:22:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:22:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:22:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:22:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:22:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:22:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:22:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:22:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:22:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:22:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:22:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:22:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:22:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:22:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:22:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:22:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:22:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:22:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:22:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:22:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:22:59,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:22:59,450 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:22:59,450 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:22:59,450 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:22:59,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:22:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:22:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:22:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:22:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:22:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:22:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:22:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:22:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:22:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:22:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:22:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:22:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:22:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:22:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:22:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:22:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:22:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:22:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:22:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:22:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:22:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:22:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-07 14:22:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-07 14:22:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-07 14:22:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-07 14:22:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-07 14:22:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-07 14:22:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-07 14:22:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-07 14:22:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:22:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:22:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:22:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:22:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:22:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-07 14:22:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-07 14:22:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-07 14:22:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-07 14:22:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:22:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:22:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-07 14:22:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-07 14:22:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-07 14:22:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-07 14:22:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:22:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:22:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:22:59,460 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-07 14:22:59,460 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-07 14:22:59,460 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-07 14:22:59,460 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-07 14:22:59,460 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:22:59,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:22:59,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:22:59,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:23:04,725 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:23:04,726 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:23:04,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:23:04 BoogieIcfgContainer [2019-10-07 14:23:04,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:23:04,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:23:04,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:23:04,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:23:04,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:22:58" (1/3) ... [2019-10-07 14:23:04,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b69fa7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:23:04, skipping insertion in model container [2019-10-07 14:23:04,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:22:59" (2/3) ... [2019-10-07 14:23:04,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b69fa7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:23:04, skipping insertion in model container [2019-10-07 14:23:04,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:23:04" (3/3) ... [2019-10-07 14:23:04,747 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_productSimulator.cil.c [2019-10-07 14:23:04,759 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:23:04,770 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:23:04,782 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:23:04,832 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:23:04,833 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:23:04,833 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:23:04,833 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:23:04,833 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:23:04,833 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:23:04,833 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:23:04,834 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:23:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states. [2019-10-07 14:23:04,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-07 14:23:04,886 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:04,887 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:04,890 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:04,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:04,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1787488430, now seen corresponding path program 1 times [2019-10-07 14:23:04,906 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:04,906 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:04,906 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:04,907 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:23:05,586 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:05,587 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:23:05,587 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 14:23:05,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:23:05,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:23:05,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 14:23:05,610 INFO L87 Difference]: Start difference. First operand 705 states. Second operand 6 states. [2019-10-07 14:23:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:05,819 INFO L93 Difference]: Finished difference Result 1115 states and 1628 transitions. [2019-10-07 14:23:05,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:23:05,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-10-07 14:23:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:05,846 INFO L225 Difference]: With dead ends: 1115 [2019-10-07 14:23:05,846 INFO L226 Difference]: Without dead ends: 563 [2019-10-07 14:23:05,857 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:23:05,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2019-10-07 14:23:05,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2019-10-07 14:23:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2019-10-07 14:23:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 812 transitions. [2019-10-07 14:23:05,980 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 812 transitions. Word has length 101 [2019-10-07 14:23:05,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:05,987 INFO L462 AbstractCegarLoop]: Abstraction has 563 states and 812 transitions. [2019-10-07 14:23:05,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:23:05,987 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 812 transitions. [2019-10-07 14:23:06,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-07 14:23:06,004 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:06,004 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:06,005 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:06,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:06,007 INFO L82 PathProgramCache]: Analyzing trace with hash 72093283, now seen corresponding path program 1 times [2019-10-07 14:23:06,008 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:06,008 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:06,008 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:06,008 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:06,408 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:23:06,409 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:06,409 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:23:06,409 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:23:06,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:23:06,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:23:06,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:23:06,412 INFO L87 Difference]: Start difference. First operand 563 states and 812 transitions. Second operand 4 states. [2019-10-07 14:23:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:07,805 INFO L93 Difference]: Finished difference Result 1581 states and 2316 transitions. [2019-10-07 14:23:07,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:23:07,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2019-10-07 14:23:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:07,820 INFO L225 Difference]: With dead ends: 1581 [2019-10-07 14:23:07,821 INFO L226 Difference]: Without dead ends: 1078 [2019-10-07 14:23:07,825 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:23:07,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2019-10-07 14:23:07,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1065. [2019-10-07 14:23:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2019-10-07 14:23:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1543 transitions. [2019-10-07 14:23:07,920 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1543 transitions. Word has length 103 [2019-10-07 14:23:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:07,921 INFO L462 AbstractCegarLoop]: Abstraction has 1065 states and 1543 transitions. [2019-10-07 14:23:07,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:23:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1543 transitions. [2019-10-07 14:23:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-07 14:23:07,927 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:07,927 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:07,927 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:07,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:07,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1256887126, now seen corresponding path program 1 times [2019-10-07 14:23:07,928 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:07,928 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:07,929 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:07,929 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:23:08,182 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:08,183 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:23:08,183 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 14:23:08,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:23:08,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:23:08,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:23:08,184 INFO L87 Difference]: Start difference. First operand 1065 states and 1543 transitions. Second operand 9 states. [2019-10-07 14:23:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:15,697 INFO L93 Difference]: Finished difference Result 2947 states and 4351 transitions. [2019-10-07 14:23:15,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:23:15,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2019-10-07 14:23:15,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:15,715 INFO L225 Difference]: With dead ends: 2947 [2019-10-07 14:23:15,715 INFO L226 Difference]: Without dead ends: 1975 [2019-10-07 14:23:15,722 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:23:15,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2019-10-07 14:23:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1926. [2019-10-07 14:23:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1926 states. [2019-10-07 14:23:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1926 states to 1926 states and 2746 transitions. [2019-10-07 14:23:15,843 INFO L78 Accepts]: Start accepts. Automaton has 1926 states and 2746 transitions. Word has length 104 [2019-10-07 14:23:15,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:15,844 INFO L462 AbstractCegarLoop]: Abstraction has 1926 states and 2746 transitions. [2019-10-07 14:23:15,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:23:15,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1926 states and 2746 transitions. [2019-10-07 14:23:15,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-07 14:23:15,848 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:15,848 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:15,848 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:15,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:15,849 INFO L82 PathProgramCache]: Analyzing trace with hash -263383926, now seen corresponding path program 1 times [2019-10-07 14:23:15,849 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:15,849 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:15,849 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:15,849 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:23:16,052 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:16,053 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:23:16,053 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:23:16,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:23:16,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:23:16,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:23:16,054 INFO L87 Difference]: Start difference. First operand 1926 states and 2746 transitions. Second operand 5 states. [2019-10-07 14:23:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:18,596 INFO L93 Difference]: Finished difference Result 5719 states and 8325 transitions. [2019-10-07 14:23:18,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:18,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2019-10-07 14:23:18,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:18,634 INFO L225 Difference]: With dead ends: 5719 [2019-10-07 14:23:18,634 INFO L226 Difference]: Without dead ends: 3888 [2019-10-07 14:23:18,645 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-07 14:23:18,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2019-10-07 14:23:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3698. [2019-10-07 14:23:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3698 states. [2019-10-07 14:23:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5353 transitions. [2019-10-07 14:23:18,907 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5353 transitions. Word has length 105 [2019-10-07 14:23:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:18,909 INFO L462 AbstractCegarLoop]: Abstraction has 3698 states and 5353 transitions. [2019-10-07 14:23:18,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:23:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5353 transitions. [2019-10-07 14:23:18,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-07 14:23:18,912 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:18,912 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:18,913 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:18,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:18,913 INFO L82 PathProgramCache]: Analyzing trace with hash 423304977, now seen corresponding path program 1 times [2019-10-07 14:23:18,913 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:18,913 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:18,914 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:18,914 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:23:19,101 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:19,101 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:23:19,101 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:23:19,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:23:19,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:23:19,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:23:19,102 INFO L87 Difference]: Start difference. First operand 3698 states and 5353 transitions. Second operand 4 states. [2019-10-07 14:23:21,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:21,921 INFO L93 Difference]: Finished difference Result 10893 states and 15970 transitions. [2019-10-07 14:23:21,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:21,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2019-10-07 14:23:21,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:21,995 INFO L225 Difference]: With dead ends: 10893 [2019-10-07 14:23:21,996 INFO L226 Difference]: Without dead ends: 7292 [2019-10-07 14:23:22,021 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 14:23:22,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7292 states. [2019-10-07 14:23:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7292 to 7061. [2019-10-07 14:23:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7061 states. [2019-10-07 14:23:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 10296 transitions. [2019-10-07 14:23:22,770 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 10296 transitions. Word has length 106 [2019-10-07 14:23:22,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:22,771 INFO L462 AbstractCegarLoop]: Abstraction has 7061 states and 10296 transitions. [2019-10-07 14:23:22,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:23:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 10296 transitions. [2019-10-07 14:23:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-07 14:23:22,778 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:22,778 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:22,778 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:22,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:22,779 INFO L82 PathProgramCache]: Analyzing trace with hash 235828396, now seen corresponding path program 1 times [2019-10-07 14:23:22,780 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:22,780 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:22,780 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:22,780 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:22,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:23:22,984 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:22,984 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:23:22,985 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:23:22,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:23:22,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:23:22,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:23:22,986 INFO L87 Difference]: Start difference. First operand 7061 states and 10296 transitions. Second operand 4 states. [2019-10-07 14:23:25,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:25,716 INFO L93 Difference]: Finished difference Result 21070 states and 31128 transitions. [2019-10-07 14:23:25,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:25,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-10-07 14:23:25,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:25,848 INFO L225 Difference]: With dead ends: 21070 [2019-10-07 14:23:25,848 INFO L226 Difference]: Without dead ends: 14108 [2019-10-07 14:23:25,893 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 14:23:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14108 states. [2019-10-07 14:23:26,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14108 to 13788. [2019-10-07 14:23:26,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13788 states. [2019-10-07 14:23:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13788 states to 13788 states and 20256 transitions. [2019-10-07 14:23:26,799 INFO L78 Accepts]: Start accepts. Automaton has 13788 states and 20256 transitions. Word has length 107 [2019-10-07 14:23:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:26,802 INFO L462 AbstractCegarLoop]: Abstraction has 13788 states and 20256 transitions. [2019-10-07 14:23:26,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:23:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 13788 states and 20256 transitions. [2019-10-07 14:23:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-07 14:23:26,807 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:26,807 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:26,807 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:26,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1280974413, now seen corresponding path program 1 times [2019-10-07 14:23:26,808 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:26,809 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:26,809 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:26,809 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:23:27,023 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:27,023 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:23:27,024 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:23:27,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:23:27,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:23:27,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:23:27,026 INFO L87 Difference]: Start difference. First operand 13788 states and 20256 transitions. Second operand 4 states. [2019-10-07 14:23:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:31,101 INFO L93 Difference]: Finished difference Result 41453 states and 61975 transitions. [2019-10-07 14:23:31,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:31,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-10-07 14:23:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:31,304 INFO L225 Difference]: With dead ends: 41453 [2019-10-07 14:23:31,304 INFO L226 Difference]: Without dead ends: 27764 [2019-10-07 14:23:31,383 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 14:23:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27764 states. [2019-10-07 14:23:32,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27764 to 27267. [2019-10-07 14:23:32,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27267 states. [2019-10-07 14:23:33,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27267 states to 27267 states and 40490 transitions. [2019-10-07 14:23:33,148 INFO L78 Accepts]: Start accepts. Automaton has 27267 states and 40490 transitions. Word has length 108 [2019-10-07 14:23:33,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:33,148 INFO L462 AbstractCegarLoop]: Abstraction has 27267 states and 40490 transitions. [2019-10-07 14:23:33,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:23:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 27267 states and 40490 transitions. [2019-10-07 14:23:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-07 14:23:33,151 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:33,152 INFO L385 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:33,152 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:33,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:33,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1057217330, now seen corresponding path program 1 times [2019-10-07 14:23:33,153 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:33,153 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:33,153 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:33,153 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:23:33,317 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:33,318 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:23:33,318 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:23:33,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:23:33,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:23:33,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:23:33,319 INFO L87 Difference]: Start difference. First operand 27267 states and 40490 transitions. Second operand 4 states. [2019-10-07 14:23:38,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:38,855 INFO L93 Difference]: Finished difference Result 82320 states and 125557 transitions. [2019-10-07 14:23:38,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:38,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2019-10-07 14:23:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:39,251 INFO L225 Difference]: With dead ends: 82320 [2019-10-07 14:23:39,253 INFO L226 Difference]: Without dead ends: 55134 [2019-10-07 14:23:39,351 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 14:23:39,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55134 states. [2019-10-07 14:23:41,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55134 to 54096. [2019-10-07 14:23:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54096 states. [2019-10-07 14:23:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54096 states to 54096 states and 81396 transitions. [2019-10-07 14:23:42,170 INFO L78 Accepts]: Start accepts. Automaton has 54096 states and 81396 transitions. Word has length 109 [2019-10-07 14:23:42,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:42,171 INFO L462 AbstractCegarLoop]: Abstraction has 54096 states and 81396 transitions. [2019-10-07 14:23:42,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:23:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 54096 states and 81396 transitions. [2019-10-07 14:23:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-07 14:23:42,182 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:42,182 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:42,183 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:42,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:42,183 INFO L82 PathProgramCache]: Analyzing trace with hash 854806791, now seen corresponding path program 1 times [2019-10-07 14:23:42,183 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:42,183 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:42,184 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:42,184 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-07 14:23:42,414 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:42,414 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:42,414 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 14:23:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:43,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 3856 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:23:43,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-07 14:23:43,695 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-07 14:23:44,317 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:23:44,317 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 4] total 11 [2019-10-07 14:23:44,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:23:44,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:23:44,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:23:44,319 INFO L87 Difference]: Start difference. First operand 54096 states and 81396 transitions. Second operand 4 states. [2019-10-07 14:23:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:49,331 INFO L93 Difference]: Finished difference Result 113089 states and 175184 transitions. [2019-10-07 14:23:49,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:49,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2019-10-07 14:23:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:23:49,972 INFO L225 Difference]: With dead ends: 113089 [2019-10-07 14:23:49,972 INFO L226 Difference]: Without dead ends: 59088 [2019-10-07 14:23:50,261 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 423 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:23:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59088 states. [2019-10-07 14:23:54,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59088 to 59088. [2019-10-07 14:23:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59088 states. [2019-10-07 14:23:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59088 states to 59088 states and 90740 transitions. [2019-10-07 14:23:54,621 INFO L78 Accepts]: Start accepts. Automaton has 59088 states and 90740 transitions. Word has length 212 [2019-10-07 14:23:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:23:54,621 INFO L462 AbstractCegarLoop]: Abstraction has 59088 states and 90740 transitions. [2019-10-07 14:23:54,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:23:54,622 INFO L276 IsEmpty]: Start isEmpty. Operand 59088 states and 90740 transitions. [2019-10-07 14:23:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-07 14:23:54,636 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:23:54,636 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:23:54,846 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:23:54,847 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:23:54,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:23:54,847 INFO L82 PathProgramCache]: Analyzing trace with hash 276929376, now seen corresponding path program 1 times [2019-10-07 14:23:54,847 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:23:54,848 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:54,848 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:54,848 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:23:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:23:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-07 14:23:55,131 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:23:55,131 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:23:55,131 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 14:23:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:23:55,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 3861 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:23:55,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:23:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-07 14:23:56,435 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:23:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-07 14:23:57,044 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:23:57,045 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:23:57,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:23:57,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:23:57,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:23:57,047 INFO L87 Difference]: Start difference. First operand 59088 states and 90740 transitions. Second operand 4 states. [2019-10-07 14:23:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:23:59,800 INFO L93 Difference]: Finished difference Result 123073 states and 193740 transitions. [2019-10-07 14:23:59,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:23:59,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2019-10-07 14:23:59,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:00,254 INFO L225 Difference]: With dead ends: 123073 [2019-10-07 14:24:00,255 INFO L226 Difference]: Without dead ends: 64080 [2019-10-07 14:24:02,824 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 431 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 14:24:02,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64080 states. [2019-10-07 14:24:05,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64080 to 64080. [2019-10-07 14:24:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64080 states. [2019-10-07 14:24:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64080 states to 64080 states and 100084 transitions. [2019-10-07 14:24:05,625 INFO L78 Accepts]: Start accepts. Automaton has 64080 states and 100084 transitions. Word has length 217 [2019-10-07 14:24:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:05,626 INFO L462 AbstractCegarLoop]: Abstraction has 64080 states and 100084 transitions. [2019-10-07 14:24:05,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:24:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 64080 states and 100084 transitions. [2019-10-07 14:24:05,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-07 14:24:05,640 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:05,640 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:05,858 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:05,858 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:05,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:05,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1121363312, now seen corresponding path program 1 times [2019-10-07 14:24:05,859 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:05,859 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:05,859 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:05,859 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:05,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-10-07 14:24:06,077 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:06,077 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:06,077 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 14:24:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:06,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 3865 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:24:06,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 14:24:06,873 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-10-07 14:24:07,329 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:24:07,329 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:24:07,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:24:07,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:24:07,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:24:07,330 INFO L87 Difference]: Start difference. First operand 64080 states and 100084 transitions. Second operand 4 states. [2019-10-07 14:24:11,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:11,232 INFO L93 Difference]: Finished difference Result 133057 states and 212296 transitions. [2019-10-07 14:24:11,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:24:11,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2019-10-07 14:24:11,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:11,570 INFO L225 Difference]: With dead ends: 133057 [2019-10-07 14:24:11,570 INFO L226 Difference]: Without dead ends: 69072 [2019-10-07 14:24:11,718 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 439 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 14:24:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69072 states. [2019-10-07 14:24:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69072 to 69072. [2019-10-07 14:24:13,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69072 states. [2019-10-07 14:24:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69072 states to 69072 states and 109428 transitions. [2019-10-07 14:24:14,095 INFO L78 Accepts]: Start accepts. Automaton has 69072 states and 109428 transitions. Word has length 221 [2019-10-07 14:24:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:14,095 INFO L462 AbstractCegarLoop]: Abstraction has 69072 states and 109428 transitions. [2019-10-07 14:24:14,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:24:14,096 INFO L276 IsEmpty]: Start isEmpty. Operand 69072 states and 109428 transitions. [2019-10-07 14:24:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-07 14:24:14,108 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:14,109 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:14,318 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:14,318 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:14,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1472758955, now seen corresponding path program 1 times [2019-10-07 14:24:14,319 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:14,319 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:14,319 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:14,319 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-07 14:24:14,512 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:14,513 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:14,513 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 14:24:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:15,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 3868 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:24:15,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-07 14:24:15,316 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-07 14:24:15,928 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:24:15,928 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:24:15,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:24:15,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:24:15,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:24:15,929 INFO L87 Difference]: Start difference. First operand 69072 states and 109428 transitions. Second operand 4 states. [2019-10-07 14:24:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:17,568 INFO L93 Difference]: Finished difference Result 143041 states and 230852 transitions. [2019-10-07 14:24:17,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:24:17,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2019-10-07 14:24:17,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:18,531 INFO L225 Difference]: With dead ends: 143041 [2019-10-07 14:24:18,532 INFO L226 Difference]: Without dead ends: 74064 [2019-10-07 14:24:18,631 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 445 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 14:24:18,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74064 states. [2019-10-07 14:24:20,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74064 to 74064. [2019-10-07 14:24:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74064 states. [2019-10-07 14:24:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74064 states to 74064 states and 118772 transitions. [2019-10-07 14:24:20,519 INFO L78 Accepts]: Start accepts. Automaton has 74064 states and 118772 transitions. Word has length 224 [2019-10-07 14:24:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:20,520 INFO L462 AbstractCegarLoop]: Abstraction has 74064 states and 118772 transitions. [2019-10-07 14:24:20,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:24:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 74064 states and 118772 transitions. [2019-10-07 14:24:20,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-07 14:24:20,530 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:20,531 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:20,739 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:20,739 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:20,740 INFO L82 PathProgramCache]: Analyzing trace with hash -2058724793, now seen corresponding path program 1 times [2019-10-07 14:24:20,740 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:20,740 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:20,740 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:20,740 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-07 14:24:21,046 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:21,046 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:21,046 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 14:24:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:25,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 3864 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 14:24:25,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-10-07 14:24:25,360 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-10-07 14:24:25,963 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:25,964 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [9] total 16 [2019-10-07 14:24:25,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:24:25,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:24:25,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:24:25,967 INFO L87 Difference]: Start difference. First operand 74064 states and 118772 transitions. Second operand 9 states. [2019-10-07 14:24:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:29,137 INFO L93 Difference]: Finished difference Result 75563 states and 122554 transitions. [2019-10-07 14:24:29,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:24:29,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2019-10-07 14:24:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:29,584 INFO L225 Difference]: With dead ends: 75563 [2019-10-07 14:24:29,584 INFO L226 Difference]: Without dead ends: 75220 [2019-10-07 14:24:29,631 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 451 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 14:24:29,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75220 states. [2019-10-07 14:24:31,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75220 to 74334. [2019-10-07 14:24:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74334 states. [2019-10-07 14:24:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74334 states to 74334 states and 119216 transitions. [2019-10-07 14:24:31,856 INFO L78 Accepts]: Start accepts. Automaton has 74334 states and 119216 transitions. Word has length 226 [2019-10-07 14:24:31,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:31,857 INFO L462 AbstractCegarLoop]: Abstraction has 74334 states and 119216 transitions. [2019-10-07 14:24:31,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:24:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 74334 states and 119216 transitions. [2019-10-07 14:24:31,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2019-10-07 14:24:31,866 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:31,866 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:24:32,067 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:32,068 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:32,069 INFO L82 PathProgramCache]: Analyzing trace with hash 266687940, now seen corresponding path program 1 times [2019-10-07 14:24:32,069 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:32,069 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:32,070 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:32,070 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-10-07 14:24:32,337 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:32,338 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:32,338 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 14:24:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:34,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:24:34,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-10-07 14:24:34,143 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2019-10-07 14:24:34,931 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:34,931 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [8] total 10 [2019-10-07 14:24:34,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:24:34,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:24:34,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:34,934 INFO L87 Difference]: Start difference. First operand 74334 states and 119216 transitions. Second operand 4 states. [2019-10-07 14:24:40,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:40,350 INFO L93 Difference]: Finished difference Result 185863 states and 303800 transitions. [2019-10-07 14:24:40,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:24:40,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 351 [2019-10-07 14:24:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:40,841 INFO L225 Difference]: With dead ends: 185863 [2019-10-07 14:24:40,841 INFO L226 Difference]: Without dead ends: 111642 [2019-10-07 14:24:40,988 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:41,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111642 states. [2019-10-07 14:24:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111642 to 111547. [2019-10-07 14:24:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111547 states. [2019-10-07 14:24:44,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111547 states to 111547 states and 179071 transitions. [2019-10-07 14:24:44,436 INFO L78 Accepts]: Start accepts. Automaton has 111547 states and 179071 transitions. Word has length 351 [2019-10-07 14:24:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:44,436 INFO L462 AbstractCegarLoop]: Abstraction has 111547 states and 179071 transitions. [2019-10-07 14:24:44,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:24:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 111547 states and 179071 transitions. [2019-10-07 14:24:44,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2019-10-07 14:24:44,449 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:44,449 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2019-10-07 14:24:45,153 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:45,154 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:45,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:45,154 INFO L82 PathProgramCache]: Analyzing trace with hash 46674937, now seen corresponding path program 1 times [2019-10-07 14:24:45,155 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:45,155 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:45,155 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:45,155 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2019-10-07 14:24:45,445 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:45,445 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:45,446 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 14:24:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:46,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 5351 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-07 14:24:46,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2019-10-07 14:24:46,926 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:47,566 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:47,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:47,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:47,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:47,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2019-10-07 14:24:48,118 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:24:48,153 INFO L162 IcfgInterpreter]: Started Sifa with 230 locations of interest [2019-10-07 14:24:48,153 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:24:48,162 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:24:48,171 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:24:48,171 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:25:35,350 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 791 [2019-10-07 14:25:42,930 WARN L191 SmtUtils]: Spent 5.04 s on a formula simplification. DAG size of input: 430 DAG size of output: 347 [2019-10-07 14:25:43,393 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 884 [2019-10-07 14:25:43,870 WARN L191 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 884 [2019-10-07 14:25:44,133 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 884 [2019-10-07 14:25:44,815 WARN L191 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:25:45,362 WARN L191 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:25:45,915 WARN L191 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:25:46,525 WARN L191 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:25:47,568 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 1094 DAG size of output: 1092 [2019-10-07 14:25:48,113 WARN L191 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:25:48,742 WARN L191 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:25:49,299 WARN L191 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:25:49,833 WARN L191 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:25:50,425 WARN L191 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:25:50,449 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 421 for LOIs [2019-10-07 14:25:50,724 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 759 [2019-10-07 14:25:50,870 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 759 [2019-10-07 14:25:51,303 WARN L191 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 967 [2019-10-07 14:25:51,304 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1148 for LOIs [2019-10-07 14:25:51,821 WARN L191 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:25:52,347 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:25:52,507 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:25:53,410 WARN L191 SmtUtils]: Spent 901.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:25:53,970 WARN L191 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:25:54,495 WARN L191 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 1148 [2019-10-07 14:25:54,841 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:25:55,953 WARN L191 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:25:56,580 WARN L191 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:25:57,123 WARN L191 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:25:57,307 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:25:58,216 WARN L191 SmtUtils]: Spent 907.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:25:59,117 WARN L191 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 1346 DAG size of output: 1150 [2019-10-07 14:25:59,668 WARN L191 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:25:59,845 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:26:00,751 WARN L191 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:26:01,306 WARN L191 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:01,838 WARN L191 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:02,001 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:26:02,904 WARN L191 SmtUtils]: Spent 901.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:26:03,428 WARN L191 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:03,958 WARN L191 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:04,123 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:26:05,022 WARN L191 SmtUtils]: Spent 897.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:26:05,548 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:06,074 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:06,233 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:26:07,130 WARN L191 SmtUtils]: Spent 895.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:26:07,649 WARN L191 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:08,197 WARN L191 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:08,356 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:26:09,273 WARN L191 SmtUtils]: Spent 915.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:26:09,822 WARN L191 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:10,367 WARN L191 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:10,524 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:26:11,431 WARN L191 SmtUtils]: Spent 905.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:26:11,954 WARN L191 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:12,474 WARN L191 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:12,631 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:26:13,519 WARN L191 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:26:14,029 WARN L191 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:14,558 WARN L191 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:14,712 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:26:15,602 WARN L191 SmtUtils]: Spent 888.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:26:16,121 WARN L191 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:16,640 WARN L191 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:16,791 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:26:17,678 WARN L191 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:26:18,211 WARN L191 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:18,727 WARN L191 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 1150 [2019-10-07 14:26:18,885 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 507 [2019-10-07 14:26:19,773 WARN L191 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 1344 [2019-10-07 14:26:20,108 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:20,109 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 select_one 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 select_one 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.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 14:26:20,125 INFO L168 Benchmark]: Toolchain (without parser) took 202024.31 ms. Allocated memory was 143.1 MB in the beginning and 3.5 GB in the end (delta: 3.4 GB). Free memory was 98.0 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2019-10-07 14:26:20,126 INFO L168 Benchmark]: CDTParser took 1.44 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 14:26:20,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1022.43 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 97.8 MB in the beginning and 129.2 MB in the end (delta: -31.3 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. [2019-10-07 14:26:20,134 INFO L168 Benchmark]: Boogie Preprocessor took 199.34 ms. Allocated memory is still 201.3 MB. Free memory was 129.2 MB in the beginning and 119.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-07 14:26:20,135 INFO L168 Benchmark]: RCFGBuilder took 5414.07 ms. Allocated memory was 201.3 MB in the beginning and 316.1 MB in the end (delta: 114.8 MB). Free memory was 118.5 MB in the beginning and 231.4 MB in the end (delta: -112.9 MB). Peak memory consumption was 163.8 MB. Max. memory is 7.1 GB. [2019-10-07 14:26:20,135 INFO L168 Benchmark]: TraceAbstraction took 195383.96 ms. Allocated memory was 316.1 MB in the beginning and 3.5 GB in the end (delta: 3.2 GB). Free memory was 231.4 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2019-10-07 14:26:20,142 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.44 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1022.43 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 97.8 MB in the beginning and 129.2 MB in the end (delta: -31.3 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 199.34 ms. Allocated memory is still 201.3 MB. Free memory was 129.2 MB in the beginning and 119.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5414.07 ms. Allocated memory was 201.3 MB in the beginning and 316.1 MB in the end (delta: 114.8 MB). Free memory was 118.5 MB in the beginning and 231.4 MB in the end (delta: -112.9 MB). Peak memory consumption was 163.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 195383.96 ms. Allocated memory was 316.1 MB in the beginning and 3.5 GB in the end (delta: 3.2 GB). Free memory was 231.4 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.2 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 select_one de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee select_one: 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...