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 -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:20:54,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:20:54,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:20:54,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:20:54,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:20:54,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:20:54,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:20:54,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:20:54,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:20:54,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:20:54,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:20:54,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:20:54,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:20:54,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:20:54,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:20:54,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:20:54,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:20:54,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:20:54,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:20:54,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:20:54,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:20:54,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:20:54,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:20:54,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:20:54,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:20:54,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:20:54,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:20:54,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:20:54,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:20:54,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:20:54,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:20:54,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:20:54,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:20:54,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:20:54,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:20:54,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:20:54,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:20:54,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:20:54,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:20:54,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:20:54,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:20:54,359 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 [2019-10-13 19:20:54,372 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:20:54,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:20:54,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:20:54,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:20:54,374 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:20:54,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:20:54,374 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:20:54,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:20:54,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:20:54,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:20:54,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:20:54,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:20:54,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:20:54,375 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:20:54,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:20:54,376 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:20:54,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:20:54,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:20:54,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:20:54,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:20:54,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:20:54,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:20:54,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:20:54,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:20:54,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:20:54,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:20:54,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:20:54,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:20:54,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:20:54,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:20:54,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:20:54,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:20:54,656 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:20:54,656 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:20:54,657 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c [2019-10-13 19:20:54,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6d116a53/6142db21709e485ea111a5ed4f860f9b/FLAG0dbaf53ca [2019-10-13 19:20:55,323 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:20:55,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c [2019-10-13 19:20:55,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6d116a53/6142db21709e485ea111a5ed4f860f9b/FLAG0dbaf53ca [2019-10-13 19:20:55,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6d116a53/6142db21709e485ea111a5ed4f860f9b [2019-10-13 19:20:55,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:20:55,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:20:55,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:55,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:20:55,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:20:55,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:55" (1/1) ... [2019-10-13 19:20:55,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7183b207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:55, skipping insertion in model container [2019-10-13 19:20:55,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:55" (1/1) ... [2019-10-13 19:20:55,568 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:20:55,652 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:20:56,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:56,430 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:20:56,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:56,663 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:20:56,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:56 WrapperNode [2019-10-13 19:20:56,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:56,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:20:56,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:20:56,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:20:56,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:56" (1/1) ... [2019-10-13 19:20:56,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:56" (1/1) ... [2019-10-13 19:20:56,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:56" (1/1) ... [2019-10-13 19:20:56,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:56" (1/1) ... [2019-10-13 19:20:56,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:56" (1/1) ... [2019-10-13 19:20:56,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:56" (1/1) ... [2019-10-13 19:20:56,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:56" (1/1) ... [2019-10-13 19:20:56,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:20:56,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:20:56,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:20:56,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:20:56,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:56" (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 [2019-10-13 19:20:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:20:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:20:56,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:56,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:20:56,923 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:20:56,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:20:56,924 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:20:56,924 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:20:56,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:20:56,925 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:20:56,925 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:20:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:20:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:20:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:20:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:20:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:56,933 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:20:56,933 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:20:56,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:20:56,933 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:20:56,934 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:20:56,934 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:20:56,934 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:20:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:20:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:20:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:20:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:20:56,935 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:20:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:20:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:20:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:20:56,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:20:56,937 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:20:56,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:20:56,937 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:20:56,938 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:56,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:20:56,938 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:20:56,939 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2019-10-13 19:20:56,939 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:20:56,939 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__weight [2019-10-13 19:20:56,939 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:20:56,939 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:20:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:20:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:20:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:20:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:20:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:20:56,940 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:20:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:20:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:20:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:20:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:20:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:20:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:20:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:20:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:20:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:20:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:20:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:20:56,943 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:20:56,943 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:20:56,944 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:20:56,944 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:20:56,944 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:20:56,944 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:20:56,944 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:20:56,945 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:20:56,946 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:20:56,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:20:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:20:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:20:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:20:56,947 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:20:56,947 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:20:56,947 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:20:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:20:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:20:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:20:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:20:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:20:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:20:56,951 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:20:56,952 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:20:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:20:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:20:56,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:20:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:20:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:20:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:20:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:20:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:20:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:20:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:20:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:20:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:20:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:20:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:20:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:20:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:20:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:20:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:20:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:20:56,958 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:20:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:20:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:20:56,959 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:20:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:20:56,960 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:20:56,961 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:20:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:20:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:20:56,962 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:20:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:20:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:20:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:20:56,963 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:20:56,964 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:20:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:56,968 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:20:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:20:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2019-10-13 19:20:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__weight [2019-10-13 19:20:56,969 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:20:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:20:56,970 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:20:56,974 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:20:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:20:56,975 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:20:56,976 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:20:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:20:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:20:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:20:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:20:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:20:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:20:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:20:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:20:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:20:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:20:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:20:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:20:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:20:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:20:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:20:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:20:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:20:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:20:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:20:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:20:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:20:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:20:56,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:20:59,555 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:20:59,556 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:20:59,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:59 BoogieIcfgContainer [2019-10-13 19:20:59,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:20:59,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:20:59,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:20:59,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:20:59,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:20:55" (1/3) ... [2019-10-13 19:20:59,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c93dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:59, skipping insertion in model container [2019-10-13 19:20:59,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:56" (2/3) ... [2019-10-13 19:20:59,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c93dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:20:59, skipping insertion in model container [2019-10-13 19:20:59,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:20:59" (3/3) ... [2019-10-13 19:20:59,568 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.c [2019-10-13 19:20:59,579 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:20:59,590 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:20:59,602 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:20:59,645 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:20:59,645 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:20:59,645 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:20:59,645 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:20:59,645 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:20:59,645 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:20:59,646 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:20:59,646 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:20:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states. [2019-10-13 19:20:59,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 19:20:59,724 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:59,725 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:20:59,728 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:59,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:59,734 INFO L82 PathProgramCache]: Analyzing trace with hash 126544023, now seen corresponding path program 1 times [2019-10-13 19:20:59,744 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:59,744 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622265478] [2019-10-13 19:20:59,744 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:59,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:59,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,357 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,665 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,908 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:02,260 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622265478] [2019-10-13 19:21:02,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738337675] [2019-10-13 19:21:02,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:02,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:21:02,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:02,931 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:02,931 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-10-13 19:21:02,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330292238] [2019-10-13 19:21:02,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:21:02,940 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:02,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:21:02,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:02,955 INFO L87 Difference]: Start difference. First operand 759 states. Second operand 2 states. [2019-10-13 19:21:03,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:03,073 INFO L93 Difference]: Finished difference Result 635 states and 1015 transitions. [2019-10-13 19:21:03,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:21:03,075 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-10-13 19:21:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:03,114 INFO L225 Difference]: With dead ends: 635 [2019-10-13 19:21:03,114 INFO L226 Difference]: Without dead ends: 598 [2019-10-13 19:21:03,119 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:21:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-10-13 19:21:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-10-13 19:21:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-13 19:21:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 960 transitions. [2019-10-13 19:21:03,231 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 960 transitions. Word has length 116 [2019-10-13 19:21:03,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:03,233 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 960 transitions. [2019-10-13 19:21:03,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:21:03,234 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 960 transitions. [2019-10-13 19:21:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 19:21:03,238 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:03,238 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:03,455 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:03,456 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:03,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:03,457 INFO L82 PathProgramCache]: Analyzing trace with hash 845887242, now seen corresponding path program 1 times [2019-10-13 19:21:03,457 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:03,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852676127] [2019-10-13 19:21:03,458 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:03,458 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:03,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,589 WARN L191 SmtUtils]: Spent 968.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,908 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,077 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:05,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852676127] [2019-10-13 19:21:05,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053050977] [2019-10-13 19:21:05,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 3173 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:05,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:06,040 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:06,040 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:06,040 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056328307] [2019-10-13 19:21:06,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:06,042 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:06,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:06,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:06,043 INFO L87 Difference]: Start difference. First operand 598 states and 960 transitions. Second operand 4 states. [2019-10-13 19:21:06,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:06,187 INFO L93 Difference]: Finished difference Result 1168 states and 1893 transitions. [2019-10-13 19:21:06,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:06,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 19:21:06,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:06,198 INFO L225 Difference]: With dead ends: 1168 [2019-10-13 19:21:06,198 INFO L226 Difference]: Without dead ends: 598 [2019-10-13 19:21:06,208 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:06,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-10-13 19:21:06,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-10-13 19:21:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-13 19:21:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 959 transitions. [2019-10-13 19:21:06,278 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 959 transitions. Word has length 118 [2019-10-13 19:21:06,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:06,279 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 959 transitions. [2019-10-13 19:21:06,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 959 transitions. [2019-10-13 19:21:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 19:21:06,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:06,288 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:06,496 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:06,497 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:06,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:06,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1248298604, now seen corresponding path program 1 times [2019-10-13 19:21:06,498 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:06,498 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261134615] [2019-10-13 19:21:06,499 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:06,499 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:06,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,454 WARN L191 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,738 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,912 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:08,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261134615] [2019-10-13 19:21:08,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404957236] [2019-10-13 19:21:08,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:08,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:08,830 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:08,831 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:08,831 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819577770] [2019-10-13 19:21:08,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:08,833 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:08,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:08,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:08,834 INFO L87 Difference]: Start difference. First operand 598 states and 959 transitions. Second operand 4 states. [2019-10-13 19:21:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:08,933 INFO L93 Difference]: Finished difference Result 1168 states and 1891 transitions. [2019-10-13 19:21:08,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:08,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 19:21:08,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:08,938 INFO L225 Difference]: With dead ends: 1168 [2019-10-13 19:21:08,939 INFO L226 Difference]: Without dead ends: 598 [2019-10-13 19:21:08,943 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-10-13 19:21:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-10-13 19:21:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-13 19:21:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 958 transitions. [2019-10-13 19:21:08,975 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 958 transitions. Word has length 120 [2019-10-13 19:21:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:08,976 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 958 transitions. [2019-10-13 19:21:08,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 958 transitions. [2019-10-13 19:21:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 19:21:08,979 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:08,979 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:09,188 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:09,189 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:09,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:09,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1488778386, now seen corresponding path program 1 times [2019-10-13 19:21:09,190 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:09,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731963748] [2019-10-13 19:21:09,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:09,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:09,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,096 WARN L191 SmtUtils]: Spent 806.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,395 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,548 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:10,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731963748] [2019-10-13 19:21:10,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589656263] [2019-10-13 19:21:10,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 3177 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:11,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:11,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:11,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:11,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675567578] [2019-10-13 19:21:11,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:11,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:11,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:11,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:11,588 INFO L87 Difference]: Start difference. First operand 598 states and 958 transitions. Second operand 4 states. [2019-10-13 19:21:11,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:11,686 INFO L93 Difference]: Finished difference Result 1175 states and 1898 transitions. [2019-10-13 19:21:11,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:11,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-13 19:21:11,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:11,693 INFO L225 Difference]: With dead ends: 1175 [2019-10-13 19:21:11,693 INFO L226 Difference]: Without dead ends: 607 [2019-10-13 19:21:11,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2019-10-13 19:21:11,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2019-10-13 19:21:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-10-13 19:21:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 970 transitions. [2019-10-13 19:21:11,726 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 970 transitions. Word has length 122 [2019-10-13 19:21:11,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:11,727 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 970 transitions. [2019-10-13 19:21:11,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:11,727 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 970 transitions. [2019-10-13 19:21:11,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 19:21:11,729 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:11,730 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:11,937 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:11,938 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:11,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:11,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1725323163, now seen corresponding path program 1 times [2019-10-13 19:21:11,939 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:11,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373084827] [2019-10-13 19:21:11,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:11,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:11,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,927 WARN L191 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,269 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,483 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:13,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373084827] [2019-10-13 19:21:13,768 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196393803] [2019-10-13 19:21:13,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 3178 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:14,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:14,404 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:14,404 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:14,405 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138512008] [2019-10-13 19:21:14,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:14,406 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:14,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:14,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:14,406 INFO L87 Difference]: Start difference. First operand 607 states and 970 transitions. Second operand 4 states. [2019-10-13 19:21:14,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:14,497 INFO L93 Difference]: Finished difference Result 1177 states and 1899 transitions. [2019-10-13 19:21:14,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:14,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-10-13 19:21:14,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:14,503 INFO L225 Difference]: With dead ends: 1177 [2019-10-13 19:21:14,503 INFO L226 Difference]: Without dead ends: 607 [2019-10-13 19:21:14,509 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2019-10-13 19:21:14,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2019-10-13 19:21:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-10-13 19:21:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 969 transitions. [2019-10-13 19:21:14,536 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 969 transitions. Word has length 123 [2019-10-13 19:21:14,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:14,537 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 969 transitions. [2019-10-13 19:21:14,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 969 transitions. [2019-10-13 19:21:14,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 19:21:14,545 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:14,545 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:14,755 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:14,755 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:14,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:14,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1073190474, now seen corresponding path program 1 times [2019-10-13 19:21:14,756 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:14,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800159707] [2019-10-13 19:21:14,757 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:14,757 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:14,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,066 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,321 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:21:16,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800159707] [2019-10-13 19:21:16,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819095688] [2019-10-13 19:21:16,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:17,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 19:21:17,534 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:17,534 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:21:17,535 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245181032] [2019-10-13 19:21:17,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:17,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:17,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:17,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:21:17,536 INFO L87 Difference]: Start difference. First operand 607 states and 969 transitions. Second operand 4 states. [2019-10-13 19:21:17,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:17,620 INFO L93 Difference]: Finished difference Result 1177 states and 1898 transitions. [2019-10-13 19:21:17,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:17,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 19:21:17,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:17,629 INFO L225 Difference]: With dead ends: 1177 [2019-10-13 19:21:17,629 INFO L226 Difference]: Without dead ends: 607 [2019-10-13 19:21:17,633 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:17,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2019-10-13 19:21:17,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2019-10-13 19:21:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-10-13 19:21:17,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 968 transitions. [2019-10-13 19:21:17,657 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 968 transitions. Word has length 124 [2019-10-13 19:21:17,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:17,658 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 968 transitions. [2019-10-13 19:21:17,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:17,658 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 968 transitions. [2019-10-13 19:21:17,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 19:21:17,661 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:17,661 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:17,870 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:17,870 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:17,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:17,871 INFO L82 PathProgramCache]: Analyzing trace with hash 825732863, now seen corresponding path program 1 times [2019-10-13 19:21:17,871 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:17,871 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069290920] [2019-10-13 19:21:17,871 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:17,871 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:17,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,833 WARN L191 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,106 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,333 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:21:19,613 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069290920] [2019-10-13 19:21:19,613 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086141167] [2019-10-13 19:21:19,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:20,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:20,226 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:20,226 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-13 19:21:20,231 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441530087] [2019-10-13 19:21:20,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:20,232 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:20,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:20,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:21:20,233 INFO L87 Difference]: Start difference. First operand 607 states and 968 transitions. Second operand 4 states. [2019-10-13 19:21:20,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:20,413 INFO L93 Difference]: Finished difference Result 1176 states and 1898 transitions. [2019-10-13 19:21:20,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:20,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-10-13 19:21:20,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:20,419 INFO L225 Difference]: With dead ends: 1176 [2019-10-13 19:21:20,419 INFO L226 Difference]: Without dead ends: 607 [2019-10-13 19:21:20,422 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:20,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2019-10-13 19:21:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2019-10-13 19:21:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-10-13 19:21:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 963 transitions. [2019-10-13 19:21:20,447 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 963 transitions. Word has length 125 [2019-10-13 19:21:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:20,447 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 963 transitions. [2019-10-13 19:21:20,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 963 transitions. [2019-10-13 19:21:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 19:21:20,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:20,452 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:20,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:20,663 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:20,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:20,663 INFO L82 PathProgramCache]: Analyzing trace with hash -215123635, now seen corresponding path program 1 times [2019-10-13 19:21:20,663 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:20,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733559027] [2019-10-13 19:21:20,664 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:20,664 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:20,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,822 WARN L191 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,156 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,407 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:21:22,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733559027] [2019-10-13 19:21:22,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368467193] [2019-10-13 19:21:22,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:23,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:23,329 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:23,329 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-13 19:21:23,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389157942] [2019-10-13 19:21:23,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:23,334 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:23,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:23,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:21:23,335 INFO L87 Difference]: Start difference. First operand 607 states and 963 transitions. Second operand 4 states. [2019-10-13 19:21:23,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:23,494 INFO L93 Difference]: Finished difference Result 1176 states and 1888 transitions. [2019-10-13 19:21:23,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:23,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-13 19:21:23,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:23,501 INFO L225 Difference]: With dead ends: 1176 [2019-10-13 19:21:23,501 INFO L226 Difference]: Without dead ends: 607 [2019-10-13 19:21:23,505 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:23,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2019-10-13 19:21:23,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2019-10-13 19:21:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-10-13 19:21:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 958 transitions. [2019-10-13 19:21:23,526 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 958 transitions. Word has length 127 [2019-10-13 19:21:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:23,527 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 958 transitions. [2019-10-13 19:21:23,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:23,527 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 958 transitions. [2019-10-13 19:21:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 19:21:23,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:23,530 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:23,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:23,746 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:23,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:23,746 INFO L82 PathProgramCache]: Analyzing trace with hash -585805579, now seen corresponding path program 1 times [2019-10-13 19:21:23,747 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:23,747 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238052183] [2019-10-13 19:21:23,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:23,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:23,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,707 WARN L191 SmtUtils]: Spent 854.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,043 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,250 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:21:25,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238052183] [2019-10-13 19:21:25,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396924259] [2019-10-13 19:21:25,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:26,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:26,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:21:26,170 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:26,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-10-13 19:21:26,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75387436] [2019-10-13 19:21:26,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:26,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:26,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:26,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:21:26,172 INFO L87 Difference]: Start difference. First operand 607 states and 958 transitions. Second operand 4 states. [2019-10-13 19:21:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:26,415 INFO L93 Difference]: Finished difference Result 1212 states and 1937 transitions. [2019-10-13 19:21:26,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:26,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-10-13 19:21:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:26,424 INFO L225 Difference]: With dead ends: 1212 [2019-10-13 19:21:26,424 INFO L226 Difference]: Without dead ends: 646 [2019-10-13 19:21:26,429 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2019-10-13 19:21:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2019-10-13 19:21:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2019-10-13 19:21:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1022 transitions. [2019-10-13 19:21:26,454 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1022 transitions. Word has length 129 [2019-10-13 19:21:26,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:26,455 INFO L462 AbstractCegarLoop]: Abstraction has 646 states and 1022 transitions. [2019-10-13 19:21:26,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:26,455 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1022 transitions. [2019-10-13 19:21:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 19:21:26,459 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:26,460 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 19:21:26,669 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:26,670 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:26,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:26,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1638975902, now seen corresponding path program 1 times [2019-10-13 19:21:26,671 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:26,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694194508] [2019-10-13 19:21:26,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:26,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:26,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,992 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 397 [2019-10-13 19:21:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,272 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:21:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,442 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat