/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:31:22,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:31:22,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:31:22,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:31:22,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:31:22,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:31:22,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:31:22,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:31:22,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:31:22,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:31:22,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:31:22,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:31:22,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:31:22,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:31:22,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:31:22,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:31:22,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:31:22,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:31:22,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:31:22,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:31:22,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:31:22,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:31:22,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:31:22,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:31:22,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:31:22,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:31:22,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:31:22,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:31:22,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:31:22,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:31:22,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:31:22,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:31:22,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:31:22,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:31:22,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:31:22,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:31:22,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:31:22,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:31:22,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:31:22,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:31:22,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:31:22,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:31:22,866 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:31:22,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:31:22,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:31:22,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:31:22,868 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:31:22,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:31:22,868 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:31:22,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:31:22,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:31:22,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:31:22,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:31:22,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:31:22,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:31:22,870 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:31:22,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:31:22,870 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:31:22,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:31:22,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:31:22,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:31:22,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:31:22,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:31:22,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:31:22,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:31:22,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:31:22,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:31:22,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:31:22,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:31:22,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:31:22,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:31:23,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:31:23,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:31:23,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:31:23,164 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:31:23,164 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:31:23,166 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c [2019-11-06 21:31:23,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6713b9bb/7d0ee41a206c4cf2b08e44dbb59a5cd5/FLAG2041d008c [2019-11-06 21:31:23,903 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:31:23,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product27.cil.c [2019-11-06 21:31:23,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6713b9bb/7d0ee41a206c4cf2b08e44dbb59a5cd5/FLAG2041d008c [2019-11-06 21:31:24,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6713b9bb/7d0ee41a206c4cf2b08e44dbb59a5cd5 [2019-11-06 21:31:24,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:31:24,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:31:24,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:31:24,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:31:24,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:31:24,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:31:24" (1/1) ... [2019-11-06 21:31:24,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2406b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:24, skipping insertion in model container [2019-11-06 21:31:24,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:31:24" (1/1) ... [2019-11-06 21:31:24,100 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:31:24,188 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:31:24,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:31:24,889 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:31:25,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:31:25,089 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:31:25,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25 WrapperNode [2019-11-06 21:31:25,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:31:25,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:31:25,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:31:25,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:31:25,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25" (1/1) ... [2019-11-06 21:31:25,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25" (1/1) ... [2019-11-06 21:31:25,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25" (1/1) ... [2019-11-06 21:31:25,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25" (1/1) ... [2019-11-06 21:31:25,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25" (1/1) ... [2019-11-06 21:31:25,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25" (1/1) ... [2019-11-06 21:31:25,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25" (1/1) ... [2019-11-06 21:31:25,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:31:25,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:31:25,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:31:25,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:31:25,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:31:25,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:31:25,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:31:25,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:31:25,387 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:31:25,387 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:31:25,388 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:31:25,388 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:31:25,388 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:31:25,388 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:31:25,389 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:31:25,389 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:31:25,389 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:31:25,390 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:31:25,390 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:31:25,391 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:31:25,391 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:31:25,393 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:31:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:31:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:31:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:31:25,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:31:25,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:31:25,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:31:25,395 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:31:25,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:31:25,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:31:25,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:31:25,396 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:31:25,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:31:25,397 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:31:25,397 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:31:25,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:31:25,397 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:31:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:31:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:31:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:31:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:31:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:31:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:31:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:31:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:31:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:31:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:31:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:31:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:31:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:31:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:31:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:31:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:31:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:31:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:31:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:31:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:31:25,402 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:31:25,402 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:31:25,402 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-06 21:31:25,402 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:31:25,402 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:31:25,402 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:31:25,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:31:25,403 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:31:25,403 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:31:25,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:31:25,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:31:25,403 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:31:25,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:31:25,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-06 21:31:25,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:31:25,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:31:25,405 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:31:25,405 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-06 21:31:25,405 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:31:25,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:31:25,406 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:31:25,406 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:31:25,407 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:31:25,407 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:31:25,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-06 21:31:25,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-06 21:31:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:31:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:31:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:31:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:31:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:31:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:31:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:31:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:31:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:31:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:31:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:31:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:31:25,411 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:31:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:31:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:31:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:31:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:31:25,412 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:31:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:31:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:31:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:31:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:31:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:31:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:31:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:31:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:31:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:31:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:31:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:31:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:31:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:31:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:31:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:31:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:31:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:31:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:31:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:31:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:31:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:31:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:31:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:31:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:31:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:31:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:31:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:31:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:31:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:31:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:31:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:31:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:31:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:31:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:31:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:31:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:31:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:31:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:31:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:31:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:31:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:31:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:31:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:31:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:31:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:31:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:31:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:31:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:31:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:31:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:31:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:31:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:31:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:31:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:31:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:31:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-06 21:31:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-06 21:31:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:31:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:31:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-06 21:31:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:31:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:31:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:31:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:31:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:31:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-06 21:31:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:31:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:31:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-06 21:31:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:31:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:31:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:31:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:31:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:31:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:31:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:31:27,735 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:31:27,735 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:31:27,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:31:27 BoogieIcfgContainer [2019-11-06 21:31:27,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:31:27,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:31:27,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:31:27,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:31:27,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:31:24" (1/3) ... [2019-11-06 21:31:27,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acaf25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:31:27, skipping insertion in model container [2019-11-06 21:31:27,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25" (2/3) ... [2019-11-06 21:31:27,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acaf25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:31:27, skipping insertion in model container [2019-11-06 21:31:27,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:31:27" (3/3) ... [2019-11-06 21:31:27,749 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product27.cil.c [2019-11-06 21:31:27,761 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:31:27,772 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:31:27,785 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:31:27,836 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:31:27,837 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:31:27,837 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:31:27,837 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:31:27,837 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:31:27,837 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:31:27,838 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:31:27,838 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:31:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states. [2019-11-06 21:31:27,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-06 21:31:27,923 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:27,924 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:27,927 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:27,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1141636338, now seen corresponding path program 1 times [2019-11-06 21:31:27,944 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:27,944 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083803652] [2019-11-06 21:31:27,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,597 WARN L191 SmtUtils]: Spent 990.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,922 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,149 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:31:30,635 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083803652] [2019-11-06 21:31:30,636 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033254265] [2019-11-06 21:31:30,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-06 21:31:31,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-06 21:31:31,322 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:31,323 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-11-06 21:31:31,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141790457] [2019-11-06 21:31:31,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:31:31,335 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:31,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:31:31,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:31:31,349 INFO L87 Difference]: Start difference. First operand 787 states. Second operand 2 states. [2019-11-06 21:31:31,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:31,431 INFO L93 Difference]: Finished difference Result 670 states and 1061 transitions. [2019-11-06 21:31:31,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:31:31,432 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-11-06 21:31:31,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:31,461 INFO L225 Difference]: With dead ends: 670 [2019-11-06 21:31:31,462 INFO L226 Difference]: Without dead ends: 633 [2019-11-06 21:31:31,467 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:31:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-11-06 21:31:31,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-11-06 21:31:31,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-11-06 21:31:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1006 transitions. [2019-11-06 21:31:31,607 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1006 transitions. Word has length 164 [2019-11-06 21:31:31,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:31,609 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 1006 transitions. [2019-11-06 21:31:31,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:31:31,610 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1006 transitions. [2019-11-06 21:31:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-06 21:31:31,622 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:31,622 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:31,831 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:31,831 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:31,832 INFO L82 PathProgramCache]: Analyzing trace with hash -54443263, now seen corresponding path program 1 times [2019-11-06 21:31:31,832 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:31,832 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205880106] [2019-11-06 21:31:31,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,890 WARN L191 SmtUtils]: Spent 924.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,167 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:31:33,756 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205880106] [2019-11-06 21:31:33,756 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855249186] [2019-11-06 21:31:33,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:34,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:34,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 21:31:34,376 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:34,377 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:31:34,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867362133] [2019-11-06 21:31:34,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:34,379 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:34,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:34,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:34,379 INFO L87 Difference]: Start difference. First operand 633 states and 1006 transitions. Second operand 4 states. [2019-11-06 21:31:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:34,502 INFO L93 Difference]: Finished difference Result 1238 states and 1985 transitions. [2019-11-06 21:31:34,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:34,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2019-11-06 21:31:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:34,521 INFO L225 Difference]: With dead ends: 1238 [2019-11-06 21:31:34,521 INFO L226 Difference]: Without dead ends: 633 [2019-11-06 21:31:34,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:31:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-11-06 21:31:34,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-11-06 21:31:34,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-11-06 21:31:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1005 transitions. [2019-11-06 21:31:34,593 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1005 transitions. Word has length 166 [2019-11-06 21:31:34,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:34,597 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 1005 transitions. [2019-11-06 21:31:34,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:34,597 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1005 transitions. [2019-11-06 21:31:34,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-06 21:31:34,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:34,606 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:34,814 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:34,815 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:34,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:34,816 INFO L82 PathProgramCache]: Analyzing trace with hash 41360599, now seen corresponding path program 1 times [2019-11-06 21:31:34,816 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:34,816 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300248559] [2019-11-06 21:31:34,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,789 WARN L191 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,053 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,217 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:31:36,733 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300248559] [2019-11-06 21:31:36,733 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464569888] [2019-11-06 21:31:36,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:37,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 21:31:37,340 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:37,341 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:31:37,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649380136] [2019-11-06 21:31:37,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:37,342 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:37,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:37,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:37,342 INFO L87 Difference]: Start difference. First operand 633 states and 1005 transitions. Second operand 4 states. [2019-11-06 21:31:37,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:37,456 INFO L93 Difference]: Finished difference Result 1238 states and 1983 transitions. [2019-11-06 21:31:37,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:37,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2019-11-06 21:31:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:37,462 INFO L225 Difference]: With dead ends: 1238 [2019-11-06 21:31:37,462 INFO L226 Difference]: Without dead ends: 633 [2019-11-06 21:31:37,466 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:31:37,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-11-06 21:31:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-11-06 21:31:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-11-06 21:31:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1004 transitions. [2019-11-06 21:31:37,495 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1004 transitions. Word has length 168 [2019-11-06 21:31:37,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:37,496 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 1004 transitions. [2019-11-06 21:31:37,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:37,496 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1004 transitions. [2019-11-06 21:31:37,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-11-06 21:31:37,501 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:37,501 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:37,709 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:37,710 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:37,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1984965257, now seen corresponding path program 1 times [2019-11-06 21:31:37,710 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:37,711 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299029020] [2019-11-06 21:31:37,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,657 WARN L191 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,919 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:31:39,603 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299029020] [2019-11-06 21:31:39,603 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708797003] [2019-11-06 21:31:39,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:40,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 21:31:40,416 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:40,417 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:31:40,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131355560] [2019-11-06 21:31:40,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:40,419 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:40,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:40,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:40,420 INFO L87 Difference]: Start difference. First operand 633 states and 1004 transitions. Second operand 4 states. [2019-11-06 21:31:40,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:40,511 INFO L93 Difference]: Finished difference Result 1245 states and 1990 transitions. [2019-11-06 21:31:40,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:40,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-11-06 21:31:40,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:40,518 INFO L225 Difference]: With dead ends: 1245 [2019-11-06 21:31:40,518 INFO L226 Difference]: Without dead ends: 642 [2019-11-06 21:31:40,522 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:31:40,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-11-06 21:31:40,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-11-06 21:31:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-06 21:31:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1016 transitions. [2019-11-06 21:31:40,557 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1016 transitions. Word has length 170 [2019-11-06 21:31:40,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:40,558 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1016 transitions. [2019-11-06 21:31:40,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1016 transitions. [2019-11-06 21:31:40,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-06 21:31:40,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:40,564 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:40,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:40,773 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:40,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:40,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1663399092, now seen corresponding path program 1 times [2019-11-06 21:31:40,773 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:40,774 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759309475] [2019-11-06 21:31:40,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,661 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,903 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,054 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:31:42,332 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759309475] [2019-11-06 21:31:42,333 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629389069] [2019-11-06 21:31:42,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 3294 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:42,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 21:31:43,045 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:43,045 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:31:43,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715221228] [2019-11-06 21:31:43,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:43,047 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:43,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:43,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:43,047 INFO L87 Difference]: Start difference. First operand 642 states and 1016 transitions. Second operand 4 states. [2019-11-06 21:31:43,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:43,140 INFO L93 Difference]: Finished difference Result 1247 states and 1991 transitions. [2019-11-06 21:31:43,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:43,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-11-06 21:31:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:43,149 INFO L225 Difference]: With dead ends: 1247 [2019-11-06 21:31:43,149 INFO L226 Difference]: Without dead ends: 642 [2019-11-06 21:31:43,154 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:31:43,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-11-06 21:31:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-11-06 21:31:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-06 21:31:43,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1015 transitions. [2019-11-06 21:31:43,193 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1015 transitions. Word has length 171 [2019-11-06 21:31:43,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:43,194 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1015 transitions. [2019-11-06 21:31:43,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1015 transitions. [2019-11-06 21:31:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-06 21:31:43,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:43,202 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:43,420 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:43,420 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:43,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:43,421 INFO L82 PathProgramCache]: Analyzing trace with hash 424078317, now seen corresponding path program 1 times [2019-11-06 21:31:43,421 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:43,422 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438143961] [2019-11-06 21:31:43,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,374 WARN L191 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,635 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,795 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 21:31:45,269 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438143961] [2019-11-06 21:31:45,270 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333625090] [2019-11-06 21:31:45,270 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 [2019-11-06 21:31:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 3295 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:45,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-06 21:31:45,899 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:45,900 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:31:45,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925249097] [2019-11-06 21:31:45,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:45,901 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:45,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:45,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:45,902 INFO L87 Difference]: Start difference. First operand 642 states and 1015 transitions. Second operand 4 states. [2019-11-06 21:31:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:45,986 INFO L93 Difference]: Finished difference Result 1247 states and 1990 transitions. [2019-11-06 21:31:45,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:45,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2019-11-06 21:31:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:45,994 INFO L225 Difference]: With dead ends: 1247 [2019-11-06 21:31:45,994 INFO L226 Difference]: Without dead ends: 642 [2019-11-06 21:31:45,999 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:31:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-11-06 21:31:46,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-11-06 21:31:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-06 21:31:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1014 transitions. [2019-11-06 21:31:46,032 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1014 transitions. Word has length 172 [2019-11-06 21:31:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:46,032 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1014 transitions. [2019-11-06 21:31:46,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:46,033 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1014 transitions. [2019-11-06 21:31:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-06 21:31:46,040 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:46,041 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:46,251 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:46,251 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:46,252 INFO L82 PathProgramCache]: Analyzing trace with hash 799135704, now seen corresponding path program 1 times [2019-11-06 21:31:46,252 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:46,252 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158996750] [2019-11-06 21:31:46,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,271 WARN L191 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,624 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,810 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-06 21:31:48,159 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158996750] [2019-11-06 21:31:48,159 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453003431] [2019-11-06 21:31:48,160 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 [2019-11-06 21:31:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:48,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 21:31:48,822 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:48,822 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-11-06 21:31:48,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585342355] [2019-11-06 21:31:48,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:48,828 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:48,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:48,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:31:48,829 INFO L87 Difference]: Start difference. First operand 642 states and 1014 transitions. Second operand 4 states. [2019-11-06 21:31:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:49,003 INFO L93 Difference]: Finished difference Result 1246 states and 1990 transitions. [2019-11-06 21:31:49,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:49,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2019-11-06 21:31:49,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:49,010 INFO L225 Difference]: With dead ends: 1246 [2019-11-06 21:31:49,010 INFO L226 Difference]: Without dead ends: 642 [2019-11-06 21:31:49,013 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2019-11-06 21:31:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-11-06 21:31:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-11-06 21:31:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-06 21:31:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1009 transitions. [2019-11-06 21:31:49,040 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1009 transitions. Word has length 173 [2019-11-06 21:31:49,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:49,041 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1009 transitions. [2019-11-06 21:31:49,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:49,041 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1009 transitions. [2019-11-06 21:31:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-06 21:31:49,046 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:49,046 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:49,261 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:49,262 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:49,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:49,262 INFO L82 PathProgramCache]: Analyzing trace with hash 524690856, now seen corresponding path program 1 times [2019-11-06 21:31:49,262 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:49,262 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397323838] [2019-11-06 21:31:49,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,190 WARN L191 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,470 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,648 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-06 21:31:51,039 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397323838] [2019-11-06 21:31:51,039 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27054361] [2019-11-06 21:31:51,039 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 [2019-11-06 21:31:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 3298 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:51,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 21:31:51,698 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:51,698 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2019-11-06 21:31:51,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583130591] [2019-11-06 21:31:51,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:51,699 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:51,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:51,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:31:51,700 INFO L87 Difference]: Start difference. First operand 642 states and 1009 transitions. Second operand 4 states. [2019-11-06 21:31:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:51,918 INFO L93 Difference]: Finished difference Result 1246 states and 1980 transitions. [2019-11-06 21:31:51,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:51,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2019-11-06 21:31:51,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:51,926 INFO L225 Difference]: With dead ends: 1246 [2019-11-06 21:31:51,926 INFO L226 Difference]: Without dead ends: 642 [2019-11-06 21:31:51,930 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2019-11-06 21:31:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-11-06 21:31:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-11-06 21:31:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-06 21:31:51,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1004 transitions. [2019-11-06 21:31:51,958 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1004 transitions. Word has length 175 [2019-11-06 21:31:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:51,958 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1004 transitions. [2019-11-06 21:31:51,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:51,958 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1004 transitions. [2019-11-06 21:31:51,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-11-06 21:31:51,964 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:51,965 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:52,172 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:52,172 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:52,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:52,173 INFO L82 PathProgramCache]: Analyzing trace with hash 493279630, now seen corresponding path program 1 times [2019-11-06 21:31:52,173 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:52,173 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842262791] [2019-11-06 21:31:52,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,076 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,342 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,519 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-06 21:31:54,294 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842262791] [2019-11-06 21:31:54,294 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551643366] [2019-11-06 21:31:54,295 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 [2019-11-06 21:31:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 3300 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:54,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 21:31:55,024 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:55,024 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25] total 27 [2019-11-06 21:31:55,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606888885] [2019-11-06 21:31:55,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:55,025 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:55,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:55,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2019-11-06 21:31:55,026 INFO L87 Difference]: Start difference. First operand 642 states and 1004 transitions. Second operand 4 states. [2019-11-06 21:31:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:55,254 INFO L93 Difference]: Finished difference Result 1282 states and 2029 transitions. [2019-11-06 21:31:55,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:55,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-11-06 21:31:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:55,264 INFO L225 Difference]: With dead ends: 1282 [2019-11-06 21:31:55,264 INFO L226 Difference]: Without dead ends: 681 [2019-11-06 21:31:55,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-11-06 21:31:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2019-11-06 21:31:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2019-11-06 21:31:55,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2019-11-06 21:31:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1068 transitions. [2019-11-06 21:31:55,303 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1068 transitions. Word has length 177 [2019-11-06 21:31:55,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:55,305 INFO L462 AbstractCegarLoop]: Abstraction has 681 states and 1068 transitions. [2019-11-06 21:31:55,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:55,306 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1068 transitions. [2019-11-06 21:31:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-11-06 21:31:55,313 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:55,313 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:55,524 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:55,524 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:55,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:55,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1246954601, now seen corresponding path program 1 times [2019-11-06 21:31:55,525 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:55,525 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241967555] [2019-11-06 21:31:55,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,447 WARN L191 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-06 21:31:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,734 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:31:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,901 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-06 21:31:57,656 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241967555] [2019-11-06 21:31:57,657 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718023363] [2019-11-06 21:31:57,657 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 [2019-11-06 21:31:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 3301 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:58,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 21:31:58,363 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:58,363 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25] total 27 [2019-11-06 21:31:58,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265920992] [2019-11-06 21:31:58,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:58,366 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:58,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:58,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2019-11-06 21:31:58,367 INFO L87 Difference]: Start difference. First operand 681 states and 1068 transitions. Second operand 4 states.