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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:20:56,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:20:56,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:20:56,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:20:56,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:20:56,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:20:56,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:20:56,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:20:56,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:20:56,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:20:56,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:20:56,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:20:56,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:20:56,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:20:56,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:20:56,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:20:56,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:20:56,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:20:56,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:20:56,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:20:56,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:20:56,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:20:56,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:20:56,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:20:56,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:20:56,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:20:56,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:20:56,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:20:56,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:20:56,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:20:56,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:20:56,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:20:56,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:20:56,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:20:56,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:20:56,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:20:56,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:20:56,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:20:56,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:20:56,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:20:56,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:20:56,851 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 19:20:56,872 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:20:56,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:20:56,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:20:56,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:20:56,876 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:20:56,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:20:56,876 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:20:56,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:20:56,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:20:56,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:20:56,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:20:56,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:20:56,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:20:56,879 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:20:56,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:20:56,879 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:20:56,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:20:56,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:20:56,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:20:56,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:20:56,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:20:56,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:20:56,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:20:56,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:20:56,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:20:56,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:20:56,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:20:56,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:20:56,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:20:57,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:20:57,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:20:57,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:20:57,203 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:20:57,203 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:20:57,204 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product21.cil.c [2019-10-13 19:20:57,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b358fbb/cea6a520f1a640688cb39ff3a2c732d0/FLAG877c7aad1 [2019-10-13 19:20:57,952 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:20:57,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product21.cil.c [2019-10-13 19:20:57,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b358fbb/cea6a520f1a640688cb39ff3a2c732d0/FLAG877c7aad1 [2019-10-13 19:20:58,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b358fbb/cea6a520f1a640688cb39ff3a2c732d0 [2019-10-13 19:20:58,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:20:58,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:20:58,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:58,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:20:58,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:20:58,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:58" (1/1) ... [2019-10-13 19:20:58,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@437675f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:58, skipping insertion in model container [2019-10-13 19:20:58,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:20:58" (1/1) ... [2019-10-13 19:20:58,122 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:20:58,229 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:20:59,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:59,055 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:20:59,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:20:59,300 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:20:59,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59 WrapperNode [2019-10-13 19:20:59,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:20:59,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:20:59,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:20:59,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:20:59,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59" (1/1) ... [2019-10-13 19:20:59,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59" (1/1) ... [2019-10-13 19:20:59,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59" (1/1) ... [2019-10-13 19:20:59,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59" (1/1) ... [2019-10-13 19:20:59,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59" (1/1) ... [2019-10-13 19:20:59,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59" (1/1) ... [2019-10-13 19:20:59,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59" (1/1) ... [2019-10-13 19:20:59,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:20:59,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:20:59,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:20:59,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:20:59,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:20:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:20:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:20:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:20:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:20:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:20:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:20:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:20:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:20:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:20:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:20:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:20:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:20:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:20:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:20:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:20:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:20:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:20:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:20:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:20:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:20:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:20:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:20:59,622 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:20:59,622 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:20:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:20:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:20:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:20:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:20:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:20:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:20:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:20:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:20:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:20:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:20:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:20:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:20:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:20:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:20:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:20:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:20:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:20:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:20:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:20:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:20:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:20:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:20:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:20:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:20:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:20:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:20:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:20:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:20:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:20:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:20:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:20:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:20:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:20:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:20:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:20:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:20:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:20:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:20:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:20:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:20:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:20:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:20:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:20:59,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:59,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:59,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:59,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:59,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:20:59,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:20:59,634 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:20:59,635 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:20:59,635 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:20:59,635 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:20:59,636 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:20:59,636 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:20:59,637 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:20:59,637 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:20:59,637 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:20:59,638 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:20:59,638 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:20:59,638 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:20:59,638 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:20:59,639 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:20:59,639 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:20:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:20:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:20:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:20:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:20:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:20:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:20:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:20:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:20:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:20:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:20:59,641 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:20:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:20:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:20:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 19:20:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:20:59,642 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:20:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 19:20:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:20:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:20:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:20:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-13 19:20:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:20:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:20:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:20:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:20:59,645 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:20:59,645 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:20:59,645 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:20:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:20:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:20:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:20:59,647 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:20:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:20:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:20:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:20:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:20:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:20:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:20:59,649 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:20:59,649 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:20:59,649 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:20:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:20:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-13 19:20:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:20:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:20:59,650 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:20:59,651 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:20:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:20:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:20:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:20:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:20:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:20:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:20:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:20:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:20:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:20:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:20:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:20:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:20:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:20:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:20:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:20:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:20:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:20:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:20:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:20:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:20:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:20:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:20:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-13 19:20:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:20:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:20:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:20:59,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:21:02,313 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:21:02,313 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:21:02,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:02 BoogieIcfgContainer [2019-10-13 19:21:02,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:21:02,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:21:02,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:21:02,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:21:02,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:20:58" (1/3) ... [2019-10-13 19:21:02,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f9bf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:02, skipping insertion in model container [2019-10-13 19:21:02,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:20:59" (2/3) ... [2019-10-13 19:21:02,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f9bf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:21:02, skipping insertion in model container [2019-10-13 19:21:02,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:21:02" (3/3) ... [2019-10-13 19:21:02,323 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2019-10-13 19:21:02,333 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:21:02,342 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:21:02,354 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:21:02,384 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:21:02,385 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:21:02,385 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:21:02,385 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:21:02,385 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:21:02,385 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:21:02,385 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:21:02,385 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:21:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-13 19:21:02,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 19:21:02,447 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:02,449 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, 1, 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 19:21:02,451 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:02,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:02,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1975081631, now seen corresponding path program 1 times [2019-10-13 19:21:02,467 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:02,467 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796734340] [2019-10-13 19:21:02,467 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:02,468 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:02,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:03,975 WARN L191 SmtUtils]: Spent 932.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:21:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,260 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,531 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:04,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796734340] [2019-10-13 19:21:04,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712847127] [2019-10-13 19:21:04,980 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 19:21:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:05,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 3273 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:21:05,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 19:21:05,627 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:05,627 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-10-13 19:21:05,627 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118551162] [2019-10-13 19:21:05,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:21:05,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:05,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:21:05,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:21:05,652 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 2 states. [2019-10-13 19:21:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:05,742 INFO L93 Difference]: Finished difference Result 657 states and 1045 transitions. [2019-10-13 19:21:05,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:21:05,744 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 155 [2019-10-13 19:21:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:05,783 INFO L225 Difference]: With dead ends: 657 [2019-10-13 19:21:05,783 INFO L226 Difference]: Without dead ends: 620 [2019-10-13 19:21:05,791 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:21:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-13 19:21:05,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-13 19:21:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-13 19:21:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 990 transitions. [2019-10-13 19:21:05,972 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 990 transitions. Word has length 155 [2019-10-13 19:21:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:05,975 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 990 transitions. [2019-10-13 19:21:05,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:21:05,978 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 990 transitions. [2019-10-13 19:21:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 19:21:05,989 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:05,990 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, 1, 1, 1, 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 19:21:06,199 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:06,202 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:06,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1914277300, now seen corresponding path program 1 times [2019-10-13 19:21:06,203 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:06,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87986231] [2019-10-13 19:21:06,206 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:06,206 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:06,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,249 WARN L191 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:21:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,513 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,698 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:08,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87986231] [2019-10-13 19:21:08,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658551182] [2019-10-13 19:21:08,093 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 19:21:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:08,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 3276 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:08,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:08,752 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:08,753 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:08,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:08,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760823825] [2019-10-13 19:21:08,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:08,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:08,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:08,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:08,756 INFO L87 Difference]: Start difference. First operand 620 states and 990 transitions. Second operand 4 states. [2019-10-13 19:21:08,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:08,905 INFO L93 Difference]: Finished difference Result 1212 states and 1953 transitions. [2019-10-13 19:21:08,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:08,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2019-10-13 19:21:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:08,912 INFO L225 Difference]: With dead ends: 1212 [2019-10-13 19:21:08,912 INFO L226 Difference]: Without dead ends: 620 [2019-10-13 19:21:08,920 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:08,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-13 19:21:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-13 19:21:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-13 19:21:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 989 transitions. [2019-10-13 19:21:08,976 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 989 transitions. Word has length 157 [2019-10-13 19:21:08,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:08,978 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 989 transitions. [2019-10-13 19:21:08,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 989 transitions. [2019-10-13 19:21:08,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 19:21:08,989 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:08,990 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, 1, 1, 1, 1, 1, 1, 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 19:21:09,199 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:09,200 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:09,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:09,201 INFO L82 PathProgramCache]: Analyzing trace with hash 511513774, now seen corresponding path program 1 times [2019-10-13 19:21:09,201 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:09,201 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440764131] [2019-10-13 19:21:09,201 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:09,201 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:09,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,429 WARN L191 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:21:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,708 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,893 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:11,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440764131] [2019-10-13 19:21:11,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755999424] [2019-10-13 19:21:11,281 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 19:21:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:11,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 3278 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:11,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:11,896 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:11,896 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:11,896 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708696021] [2019-10-13 19:21:11,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:11,897 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:11,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:11,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:11,898 INFO L87 Difference]: Start difference. First operand 620 states and 989 transitions. Second operand 4 states. [2019-10-13 19:21:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:12,008 INFO L93 Difference]: Finished difference Result 1212 states and 1951 transitions. [2019-10-13 19:21:12,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:12,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2019-10-13 19:21:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:12,015 INFO L225 Difference]: With dead ends: 1212 [2019-10-13 19:21:12,015 INFO L226 Difference]: Without dead ends: 620 [2019-10-13 19:21:12,020 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:12,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-13 19:21:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-13 19:21:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-13 19:21:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 988 transitions. [2019-10-13 19:21:12,057 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 988 transitions. Word has length 159 [2019-10-13 19:21:12,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:12,057 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 988 transitions. [2019-10-13 19:21:12,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:12,058 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 988 transitions. [2019-10-13 19:21:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 19:21:12,063 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:12,063 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:12,271 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:12,271 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:12,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:12,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1781427860, now seen corresponding path program 1 times [2019-10-13 19:21:12,272 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:12,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797871579] [2019-10-13 19:21:12,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:12,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:12,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,185 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:21:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,419 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,580 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:13,599 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 19:21:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:14,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797871579] [2019-10-13 19:21:14,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566156807] [2019-10-13 19:21:14,066 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 19:21:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:14,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 3280 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:14,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:14,681 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:14,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:14,681 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559535999] [2019-10-13 19:21:14,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:14,683 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:14,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:14,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:14,684 INFO L87 Difference]: Start difference. First operand 620 states and 988 transitions. Second operand 4 states. [2019-10-13 19:21:14,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:14,773 INFO L93 Difference]: Finished difference Result 1219 states and 1958 transitions. [2019-10-13 19:21:14,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:14,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-10-13 19:21:14,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:14,780 INFO L225 Difference]: With dead ends: 1219 [2019-10-13 19:21:14,780 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 19:21:14,783 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:14,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 19:21:14,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 19:21:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 19:21:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1000 transitions. [2019-10-13 19:21:14,814 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1000 transitions. Word has length 161 [2019-10-13 19:21:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:14,816 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1000 transitions. [2019-10-13 19:21:14,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:14,816 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1000 transitions. [2019-10-13 19:21:14,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 19:21:14,821 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:14,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:15,032 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:15,032 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:15,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:15,032 INFO L82 PathProgramCache]: Analyzing trace with hash -831391142, now seen corresponding path program 1 times [2019-10-13 19:21:15,033 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:15,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781577408] [2019-10-13 19:21:15,033 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:15,033 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:15,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,970 WARN L191 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:21:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,269 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,465 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,586 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 19:21:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:16,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781577408] [2019-10-13 19:21:16,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66590062] [2019-10-13 19:21:16,823 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 19:21:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:17,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 3281 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:17,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:17,523 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:17,523 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:17,524 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628972513] [2019-10-13 19:21:17,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:17,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:17,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:17,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:17,527 INFO L87 Difference]: Start difference. First operand 629 states and 1000 transitions. Second operand 4 states. [2019-10-13 19:21:17,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:17,639 INFO L93 Difference]: Finished difference Result 1221 states and 1959 transitions. [2019-10-13 19:21:17,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:17,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2019-10-13 19:21:17,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:17,647 INFO L225 Difference]: With dead ends: 1221 [2019-10-13 19:21:17,647 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 19:21:17,652 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:17,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 19:21:17,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 19:21:17,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 19:21:17,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 999 transitions. [2019-10-13 19:21:17,690 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 999 transitions. Word has length 162 [2019-10-13 19:21:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:17,691 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 999 transitions. [2019-10-13 19:21:17,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 999 transitions. [2019-10-13 19:21:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 19:21:17,700 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:17,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:17,923 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:17,923 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:17,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:17,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1680400040, now seen corresponding path program 1 times [2019-10-13 19:21:17,924 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:17,924 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949124962] [2019-10-13 19:21:17,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:17,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:17,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,804 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:21:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,064 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,234 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:19,713 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949124962] [2019-10-13 19:21:19,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886412268] [2019-10-13 19:21:19,714 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 19:21:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:20,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 3282 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:20,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:21:20,311 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:20,312 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-13 19:21:20,312 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742813858] [2019-10-13 19:21:20,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:20,313 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:20,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:20,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:21:20,314 INFO L87 Difference]: Start difference. First operand 629 states and 999 transitions. Second operand 4 states. [2019-10-13 19:21:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:20,401 INFO L93 Difference]: Finished difference Result 1221 states and 1958 transitions. [2019-10-13 19:21:20,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:20,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2019-10-13 19:21:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:20,412 INFO L225 Difference]: With dead ends: 1221 [2019-10-13 19:21:20,412 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 19:21:20,415 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:21:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 19:21:20,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 19:21:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 19:21:20,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 998 transitions. [2019-10-13 19:21:20,442 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 998 transitions. Word has length 163 [2019-10-13 19:21:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:20,444 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 998 transitions. [2019-10-13 19:21:20,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 998 transitions. [2019-10-13 19:21:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 19:21:20,449 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:20,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:20,664 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:20,665 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:20,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:20,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1066972054, now seen corresponding path program 1 times [2019-10-13 19:21:20,665 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:20,666 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109873529] [2019-10-13 19:21:20,666 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:20,666 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:20,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,636 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:21:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:21,937 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,129 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:21:22,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109873529] [2019-10-13 19:21:22,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979329038] [2019-10-13 19:21:22,510 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 19:21:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:23,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 3283 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:21:23,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:23,189 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:21:23,189 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:23,189 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2019-10-13 19:21:23,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739606058] [2019-10-13 19:21:23,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:21:23,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:23,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:21:23,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:21:23,191 INFO L87 Difference]: Start difference. First operand 629 states and 998 transitions. Second operand 7 states. [2019-10-13 19:21:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:23,357 INFO L93 Difference]: Finished difference Result 1228 states and 1967 transitions. [2019-10-13 19:21:23,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:21:23,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2019-10-13 19:21:23,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:23,363 INFO L225 Difference]: With dead ends: 1228 [2019-10-13 19:21:23,363 INFO L226 Difference]: Without dead ends: 640 [2019-10-13 19:21:23,367 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:21:23,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2019-10-13 19:21:23,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 636. [2019-10-13 19:21:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-10-13 19:21:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1008 transitions. [2019-10-13 19:21:23,398 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1008 transitions. Word has length 164 [2019-10-13 19:21:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:23,399 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 1008 transitions. [2019-10-13 19:21:23,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:21:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1008 transitions. [2019-10-13 19:21:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 19:21:23,404 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:23,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:23,622 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:23,622 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:23,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:23,622 INFO L82 PathProgramCache]: Analyzing trace with hash -146369345, now seen corresponding path program 1 times [2019-10-13 19:21:23,623 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:23,623 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503456676] [2019-10-13 19:21:23,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:23,624 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:23,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,571 WARN L191 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:21:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,809 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,972 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 19:21:25,321 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503456676] [2019-10-13 19:21:25,321 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79917689] [2019-10-13 19:21:25,321 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 19:21:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:25,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 3284 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:25,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:21:25,937 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:25,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2019-10-13 19:21:25,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24324730] [2019-10-13 19:21:25,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:25,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:25,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:25,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:21:25,939 INFO L87 Difference]: Start difference. First operand 636 states and 1008 transitions. Second operand 4 states. [2019-10-13 19:21:26,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:26,119 INFO L93 Difference]: Finished difference Result 1233 states and 1978 transitions. [2019-10-13 19:21:26,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:26,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2019-10-13 19:21:26,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:26,126 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 19:21:26,127 INFO L226 Difference]: Without dead ends: 636 [2019-10-13 19:21:26,130 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:21:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2019-10-13 19:21:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 636. [2019-10-13 19:21:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-10-13 19:21:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1003 transitions. [2019-10-13 19:21:26,165 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1003 transitions. Word has length 165 [2019-10-13 19:21:26,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:26,166 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 1003 transitions. [2019-10-13 19:21:26,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1003 transitions. [2019-10-13 19:21:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 19:21:26,174 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:26,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:26,393 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:26,394 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:26,395 INFO L82 PathProgramCache]: Analyzing trace with hash -893831295, now seen corresponding path program 1 times [2019-10-13 19:21:26,395 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:26,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095390004] [2019-10-13 19:21:26,396 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:26,396 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:26,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,492 WARN L191 SmtUtils]: Spent 972.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:21:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,742 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,893 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 19:21:28,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095390004] [2019-10-13 19:21:28,391 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723853213] [2019-10-13 19:21:28,391 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 19:21:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:28,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:28,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:21:29,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:29,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2019-10-13 19:21:29,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658923105] [2019-10-13 19:21:29,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:29,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:29,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:29,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:21:29,016 INFO L87 Difference]: Start difference. First operand 636 states and 1003 transitions. Second operand 4 states. [2019-10-13 19:21:29,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:29,174 INFO L93 Difference]: Finished difference Result 1233 states and 1968 transitions. [2019-10-13 19:21:29,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:21:29,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2019-10-13 19:21:29,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:29,179 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 19:21:29,180 INFO L226 Difference]: Without dead ends: 636 [2019-10-13 19:21:29,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:21:29,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2019-10-13 19:21:29,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 636. [2019-10-13 19:21:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-10-13 19:21:29,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 998 transitions. [2019-10-13 19:21:29,206 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 998 transitions. Word has length 167 [2019-10-13 19:21:29,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:29,208 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 998 transitions. [2019-10-13 19:21:29,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:29,208 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 998 transitions. [2019-10-13 19:21:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-13 19:21:29,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:29,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:29,426 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:29,427 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:29,427 INFO L82 PathProgramCache]: Analyzing trace with hash 241086921, now seen corresponding path program 1 times [2019-10-13 19:21:29,427 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:29,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760656930] [2019-10-13 19:21:29,428 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:29,428 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:29,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,358 WARN L191 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-13 19:21:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,633 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:21:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,809 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-13 19:21:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 19:21:31,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760656930] [2019-10-13 19:21:31,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348446966] [2019-10-13 19:21:31,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:21:31,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 3288 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:21:31,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:21:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:21:31,816 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:21:31,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2019-10-13 19:21:31,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157506886] [2019-10-13 19:21:31,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:21:31,824 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:21:31,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:21:31,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:21:31,825 INFO L87 Difference]: Start difference. First operand 636 states and 998 transitions. Second operand 4 states. [2019-10-13 19:21:32,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:21:32,030 INFO L93 Difference]: Finished difference Result 1269 states and 2016 transitions. [2019-10-13 19:21:32,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:21:32,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2019-10-13 19:21:32,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:21:32,037 INFO L225 Difference]: With dead ends: 1269 [2019-10-13 19:21:32,037 INFO L226 Difference]: Without dead ends: 678 [2019-10-13 19:21:32,041 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:21:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2019-10-13 19:21:32,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 675. [2019-10-13 19:21:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2019-10-13 19:21:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1061 transitions. [2019-10-13 19:21:32,072 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1061 transitions. Word has length 169 [2019-10-13 19:21:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:21:32,073 INFO L462 AbstractCegarLoop]: Abstraction has 675 states and 1061 transitions. [2019-10-13 19:21:32,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:21:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1061 transitions. [2019-10-13 19:21:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-13 19:21:32,077 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:21:32,078 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:21:32,293 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:21:32,294 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:21:32,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:21:32,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1461572905, now seen corresponding path program 1 times [2019-10-13 19:21:32,295 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:21:32,295 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725913731] [2019-10-13 19:21:32,295 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:32,296 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:21:32,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:21:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat