/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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:31:22,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:31:22,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:31:22,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:31:22,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:31:22,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:31:22,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:31:22,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:31:22,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:31:22,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:31:22,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:31:22,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:31:22,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:31:22,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:31:22,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:31:22,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:31:22,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:31:22,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:31:22,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:31:22,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:31:22,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:31:22,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:31:22,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:31:22,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:31:22,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:31:22,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:31:22,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:31:22,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:31:22,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:31:22,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:31:22,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:31:22,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:31:22,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:31:23,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:31:23,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:31:23,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:31:23,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:31:23,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:31:23,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:31:23,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:31:23,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:31:23,005 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 21:31:23,018 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:31:23,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:31:23,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:31:23,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:31:23,020 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:31:23,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:31:23,021 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:31:23,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:31:23,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:31:23,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:31:23,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:31:23,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:31:23,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:31:23,023 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:31:23,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:31:23,023 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:31:23,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:31:23,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:31:23,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:31:23,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:31:23,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:31:23,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:31:23,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:31:23,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:31:23,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:31:23,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:31:23,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:31:23,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:31:23,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:31:23,315 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:31:23,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:31:23,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:31:23,339 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:31:23,339 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:31:23,340 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2019-11-06 21:31:23,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e59c56a/8012a73ec0d34834ab034e27fc656bcc/FLAG7dc1b553f [2019-11-06 21:31:24,028 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:31:24,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product28.cil.c [2019-11-06 21:31:24,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e59c56a/8012a73ec0d34834ab034e27fc656bcc/FLAG7dc1b553f [2019-11-06 21:31:24,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e59c56a/8012a73ec0d34834ab034e27fc656bcc [2019-11-06 21:31:24,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:31:24,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:31:24,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:31:24,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:31:24,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:31:24,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:31:24" (1/1) ... [2019-11-06 21:31:24,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155818e8 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 21:31:24,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:31:24" (1/1) ... [2019-11-06 21:31:24,329 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:31:24,412 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:31:25,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:31:25,091 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:31:25,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:31:25,296 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:31:25,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25 WrapperNode [2019-11-06 21:31:25,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:31:25,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:31:25,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:31:25,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:31:25,314 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 21:31:25,315 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 21:31:25,347 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 21:31:25,347 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 21:31:25,421 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 21:31:25,449 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 21:31:25,459 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 21:31:25,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:31:25,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:31:25,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:31:25,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:31:25,504 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 21:31:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:31:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:31:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:31:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:31:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:31:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:31:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:31:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:31:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:31:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:31:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:31:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:31:25,601 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:31:25,601 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:31:25,602 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:31:25,602 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:31:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:31:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:31:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:31:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:31:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:31:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:31:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:31:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:31:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:31:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:31:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:31:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:31:25,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:31:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:31:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:31:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:31:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:31:25,608 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:31:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:31:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:31:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:31:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:31:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:31:25,609 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:31:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:31:25,610 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:31:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:31:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:31:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:31:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:31:25,611 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:31:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-06 21:31:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:31:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:31:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:31:25,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:31:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:31:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:31:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:31:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:31:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:31:25,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:31:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-06 21:31:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:31:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:31:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:31:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-06 21:31:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:31:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:31:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:31:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-06 21:31:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:31:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-06 21:31:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:31:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:31:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-06 21:31:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-06 21:31:25,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:31:25,618 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:31:25,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:31:25,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:31:25,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:31:25,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:31:25,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:31:25,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:31:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:31:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:31:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:31:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:31:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:31:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:31:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:31:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:31:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:31:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:31:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:31:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:31:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:31:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:31:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:31:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:31:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:31:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:31:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:31:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:31:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:31:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:31:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:31:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:31:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:31:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:31:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:31:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:31:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:31:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:31:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:31:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:31:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:31:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:31:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:31:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:31:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:31:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:31:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:31:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:31:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:31:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:31:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:31:25,631 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:31:25,631 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:31:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:31:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:31:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:31:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:31:25,632 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:31:25,633 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:31:25,633 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:31:25,633 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:31:25,633 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:31:25,633 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:31:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:31:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-06 21:31:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-06 21:31:25,635 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:31:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:31:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-06 21:31:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:31:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:31:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:31:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:31:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:31:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-06 21:31:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:31:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:31:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-06 21:31:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:31:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:31:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:31:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-06 21:31:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-06 21:31:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:31:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:31:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:31:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:31:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:31:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:31:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:31:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:31:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:31:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:31:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:31:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:31:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:31:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:31:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:31:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:31:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:31:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:31:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:31:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:31:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:31:27,910 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:31:27,910 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:31:27,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:31:27 BoogieIcfgContainer [2019-11-06 21:31:27,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:31:27,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:31:27,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:31:27,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:31:27,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:31:24" (1/3) ... [2019-11-06 21:31:27,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d87b31 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 21:31:27,918 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 21:31:27,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d87b31 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 21:31:27,919 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 21:31:27,920 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.c [2019-11-06 21:31:27,930 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:31:27,944 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:31:27,957 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:31:28,008 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:31:28,009 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:31:28,009 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:31:28,009 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:31:28,009 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:31:28,009 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:31:28,010 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:31:28,010 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:31:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states. [2019-11-06 21:31:28,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-06 21:31:28,086 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:28,088 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:28,091 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:28,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:28,097 INFO L82 PathProgramCache]: Analyzing trace with hash -837542985, now seen corresponding path program 1 times [2019-11-06 21:31:28,107 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:28,107 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428925935] [2019-11-06 21:31:28,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,753 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,076 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,313 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:30,610 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428925935] [2019-11-06 21:31:30,611 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243480738] [2019-11-06 21:31:30,611 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 21:31:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-06 21:31:31,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:31:31,325 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:31,325 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-11-06 21:31:31,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464665142] [2019-11-06 21:31:31,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:31:31,337 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:31,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:31:31,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:31:31,355 INFO L87 Difference]: Start difference. First operand 803 states. Second operand 2 states. [2019-11-06 21:31:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:31,465 INFO L93 Difference]: Finished difference Result 679 states and 1074 transitions. [2019-11-06 21:31:31,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:31:31,466 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-11-06 21:31:31,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:31,501 INFO L225 Difference]: With dead ends: 679 [2019-11-06 21:31:31,501 INFO L226 Difference]: Without dead ends: 642 [2019-11-06 21:31:31,506 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:31:31,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-11-06 21:31:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-11-06 21:31:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-06 21:31:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1019 transitions. [2019-11-06 21:31:31,635 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1019 transitions. Word has length 116 [2019-11-06 21:31:31,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:31,639 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1019 transitions. [2019-11-06 21:31:31,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:31:31,640 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1019 transitions. [2019-11-06 21:31:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-06 21:31:31,649 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:31,651 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:31,853 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:31,854 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:31,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:31,854 INFO L82 PathProgramCache]: Analyzing trace with hash -709376246, now seen corresponding path program 1 times [2019-11-06 21:31:31,855 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:31,855 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721175365] [2019-11-06 21:31:31,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,924 WARN L191 SmtUtils]: Spent 926.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,222 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,430 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:33,811 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721175365] [2019-11-06 21:31:33,811 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510649772] [2019-11-06 21:31:33,811 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 21:31:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:34,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:34,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:34,467 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:34,467 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:34,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300990608] [2019-11-06 21:31:34,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:34,469 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:34,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:34,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:34,470 INFO L87 Difference]: Start difference. First operand 642 states and 1019 transitions. Second operand 4 states. [2019-11-06 21:31:34,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:34,652 INFO L93 Difference]: Finished difference Result 1256 states and 2011 transitions. [2019-11-06 21:31:34,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:34,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-11-06 21:31:34,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:34,668 INFO L225 Difference]: With dead ends: 1256 [2019-11-06 21:31:34,668 INFO L226 Difference]: Without dead ends: 642 [2019-11-06 21:31:34,688 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-11-06 21:31:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-11-06 21:31:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-06 21:31:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1018 transitions. [2019-11-06 21:31:34,734 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1018 transitions. Word has length 118 [2019-11-06 21:31:34,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:34,735 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1018 transitions. [2019-11-06 21:31:34,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:34,736 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1018 transitions. [2019-11-06 21:31:34,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-06 21:31:34,742 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:34,742 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:34,950 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:34,951 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:34,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:34,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1594115156, now seen corresponding path program 1 times [2019-11-06 21:31:34,951 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:34,952 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645906083] [2019-11-06 21:31:34,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,060 WARN L191 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,375 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,578 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:36,845 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645906083] [2019-11-06 21:31:36,845 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276797478] [2019-11-06 21:31:36,845 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 21:31:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:37,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:37,479 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:37,480 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:37,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443228782] [2019-11-06 21:31:37,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:37,481 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:37,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:37,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:37,482 INFO L87 Difference]: Start difference. First operand 642 states and 1018 transitions. Second operand 4 states. [2019-11-06 21:31:37,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:37,601 INFO L93 Difference]: Finished difference Result 1256 states and 2009 transitions. [2019-11-06 21:31:37,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:37,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-06 21:31:37,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:37,608 INFO L225 Difference]: With dead ends: 1256 [2019-11-06 21:31:37,608 INFO L226 Difference]: Without dead ends: 642 [2019-11-06 21:31:37,612 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2019-11-06 21:31:37,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2019-11-06 21:31:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2019-11-06 21:31:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1017 transitions. [2019-11-06 21:31:37,651 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1017 transitions. Word has length 120 [2019-11-06 21:31:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:37,651 INFO L462 AbstractCegarLoop]: Abstraction has 642 states and 1017 transitions. [2019-11-06 21:31:37,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1017 transitions. [2019-11-06 21:31:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-06 21:31:37,654 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:37,654 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:37,862 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:37,863 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:37,864 INFO L82 PathProgramCache]: Analyzing trace with hash -254884654, now seen corresponding path program 1 times [2019-11-06 21:31:37,864 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:37,864 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329383433] [2019-11-06 21:31:37,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,906 WARN L191 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,166 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,372 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:39,787 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329383433] [2019-11-06 21:31:39,787 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151796188] [2019-11-06 21:31:39,787 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 21:31:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:40,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:40,418 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:40,418 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:40,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547291978] [2019-11-06 21:31:40,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:40,421 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:40,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:40,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:40,422 INFO L87 Difference]: Start difference. First operand 642 states and 1017 transitions. Second operand 4 states. [2019-11-06 21:31:40,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:40,523 INFO L93 Difference]: Finished difference Result 1263 states and 2016 transitions. [2019-11-06 21:31:40,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:40,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-11-06 21:31:40,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:40,530 INFO L225 Difference]: With dead ends: 1263 [2019-11-06 21:31:40,530 INFO L226 Difference]: Without dead ends: 651 [2019-11-06 21:31:40,534 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-11-06 21:31:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-11-06 21:31:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-11-06 21:31:40,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1029 transitions. [2019-11-06 21:31:40,561 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1029 transitions. Word has length 122 [2019-11-06 21:31:40,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:40,561 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1029 transitions. [2019-11-06 21:31:40,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:40,562 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1029 transitions. [2019-11-06 21:31:40,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-06 21:31:40,564 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:40,564 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:40,771 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:40,772 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:40,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1100707264, now seen corresponding path program 1 times [2019-11-06 21:31:40,773 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:40,773 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066704942] [2019-11-06 21:31:40,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,781 WARN L191 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,035 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,240 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:42,539 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066704942] [2019-11-06 21:31:42,539 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482944733] [2019-11-06 21:31:42,539 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 21:31:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:43,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:43,187 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:43,187 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:43,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061939008] [2019-11-06 21:31:43,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:43,191 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:43,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:43,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:43,193 INFO L87 Difference]: Start difference. First operand 651 states and 1029 transitions. Second operand 4 states. [2019-11-06 21:31:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:43,280 INFO L93 Difference]: Finished difference Result 1265 states and 2017 transitions. [2019-11-06 21:31:43,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:43,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-11-06 21:31:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:43,287 INFO L225 Difference]: With dead ends: 1265 [2019-11-06 21:31:43,288 INFO L226 Difference]: Without dead ends: 651 [2019-11-06 21:31:43,291 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-11-06 21:31:43,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-11-06 21:31:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-11-06 21:31:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1028 transitions. [2019-11-06 21:31:43,320 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1028 transitions. Word has length 123 [2019-11-06 21:31:43,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:43,320 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1028 transitions. [2019-11-06 21:31:43,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1028 transitions. [2019-11-06 21:31:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-06 21:31:43,323 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:43,324 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:43,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:43,536 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:43,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:43,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1202095766, now seen corresponding path program 1 times [2019-11-06 21:31:43,537 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:43,537 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27802510] [2019-11-06 21:31:43,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,555 WARN L191 SmtUtils]: Spent 908.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,907 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,151 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:45,454 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27802510] [2019-11-06 21:31:45,454 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970724922] [2019-11-06 21:31:45,454 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 21:31:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:46,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:46,134 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:46,134 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:46,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444801141] [2019-11-06 21:31:46,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:46,135 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:46,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:46,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:46,137 INFO L87 Difference]: Start difference. First operand 651 states and 1028 transitions. Second operand 4 states. [2019-11-06 21:31:46,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:46,237 INFO L93 Difference]: Finished difference Result 1265 states and 2016 transitions. [2019-11-06 21:31:46,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:46,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-11-06 21:31:46,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:46,252 INFO L225 Difference]: With dead ends: 1265 [2019-11-06 21:31:46,252 INFO L226 Difference]: Without dead ends: 651 [2019-11-06 21:31:46,257 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:46,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-11-06 21:31:46,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-11-06 21:31:46,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-11-06 21:31:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1027 transitions. [2019-11-06 21:31:46,296 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1027 transitions. Word has length 124 [2019-11-06 21:31:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:46,297 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1027 transitions. [2019-11-06 21:31:46,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1027 transitions. [2019-11-06 21:31:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-06 21:31:46,301 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:46,302 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:46,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:46,514 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:46,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:46,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1942679045, now seen corresponding path program 1 times [2019-11-06 21:31:46,515 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:46,516 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477779829] [2019-11-06 21:31:46,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,646 WARN L191 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,953 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,171 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:48,425 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477779829] [2019-11-06 21:31:48,425 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234117619] [2019-11-06 21:31:48,425 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 21:31:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:49,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:49,116 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:49,116 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:49,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643668557] [2019-11-06 21:31:49,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:49,117 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:49,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:49,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:49,118 INFO L87 Difference]: Start difference. First operand 651 states and 1027 transitions. Second operand 4 states. [2019-11-06 21:31:49,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:49,311 INFO L93 Difference]: Finished difference Result 1264 states and 2016 transitions. [2019-11-06 21:31:49,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:49,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-11-06 21:31:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:49,319 INFO L225 Difference]: With dead ends: 1264 [2019-11-06 21:31:49,319 INFO L226 Difference]: Without dead ends: 651 [2019-11-06 21:31:49,323 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:49,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-11-06 21:31:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-11-06 21:31:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-11-06 21:31:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1022 transitions. [2019-11-06 21:31:49,349 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1022 transitions. Word has length 125 [2019-11-06 21:31:49,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:49,349 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1022 transitions. [2019-11-06 21:31:49,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:49,350 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1022 transitions. [2019-11-06 21:31:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-06 21:31:49,353 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:49,353 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:49,563 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:49,564 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:49,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2038518113, now seen corresponding path program 1 times [2019-11-06 21:31:49,565 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:49,565 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777690451] [2019-11-06 21:31:49,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,498 WARN L191 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,759 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,915 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,926 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 21:31:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:51,165 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777690451] [2019-11-06 21:31:51,165 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127678047] [2019-11-06 21:31:51,165 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 21:31:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 3187 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:51,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:51,986 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:51,987 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:51,987 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:51,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828514637] [2019-11-06 21:31:51,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:51,990 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:51,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:51,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:51,991 INFO L87 Difference]: Start difference. First operand 651 states and 1022 transitions. Second operand 4 states. [2019-11-06 21:31:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:52,149 INFO L93 Difference]: Finished difference Result 1264 states and 2006 transitions. [2019-11-06 21:31:52,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:52,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-11-06 21:31:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:52,155 INFO L225 Difference]: With dead ends: 1264 [2019-11-06 21:31:52,155 INFO L226 Difference]: Without dead ends: 651 [2019-11-06 21:31:52,158 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:52,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-11-06 21:31:52,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-11-06 21:31:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-11-06 21:31:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1017 transitions. [2019-11-06 21:31:52,188 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1017 transitions. Word has length 127 [2019-11-06 21:31:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:52,188 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1017 transitions. [2019-11-06 21:31:52,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:52,189 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1017 transitions. [2019-11-06 21:31:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-06 21:31:52,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:52,191 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:52,398 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:52,399 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:52,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:52,399 INFO L82 PathProgramCache]: Analyzing trace with hash 686521211, now seen corresponding path program 1 times [2019-11-06 21:31:52,400 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:52,400 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071196848] [2019-11-06 21:31:52,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,410 WARN L191 SmtUtils]: Spent 937.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,665 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,822 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:31:54,181 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071196848] [2019-11-06 21:31:54,181 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824603107] [2019-11-06 21:31:54,181 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 21:31:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 3189 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:54,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:54,839 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:54,839 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-11-06 21:31:54,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620764136] [2019-11-06 21:31:54,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:54,840 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:54,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:54,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:31:54,841 INFO L87 Difference]: Start difference. First operand 651 states and 1017 transitions. Second operand 4 states. [2019-11-06 21:31:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:55,043 INFO L93 Difference]: Finished difference Result 1300 states and 2055 transitions. [2019-11-06 21:31:55,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:55,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-11-06 21:31:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:55,049 INFO L225 Difference]: With dead ends: 1300 [2019-11-06 21:31:55,049 INFO L226 Difference]: Without dead ends: 690 [2019-11-06 21:31:55,053 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2019-11-06 21:31:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-11-06 21:31:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2019-11-06 21:31:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-11-06 21:31:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1081 transitions. [2019-11-06 21:31:55,078 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1081 transitions. Word has length 129 [2019-11-06 21:31:55,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:55,078 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 1081 transitions. [2019-11-06 21:31:55,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1081 transitions. [2019-11-06 21:31:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-06 21:31:55,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:55,081 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:55,288 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:55,289 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash 933168351, now seen corresponding path program 1 times [2019-11-06 21:31:55,290 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:55,290 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427439595] [2019-11-06 21:31:55,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,384 WARN L191 SmtUtils]: Spent 993.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2019-11-06 21:31:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,641 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,799 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:31:57,140 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427439595] [2019-11-06 21:31:57,140 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123300723] [2019-11-06 21:31:57,141 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 21:31:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:57,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:57,894 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:57,894 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2019-11-06 21:31:57,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115280210] [2019-11-06 21:31:57,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:57,900 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:57,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:57,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:31:57,901 INFO L87 Difference]: Start difference. First operand 690 states and 1081 transitions. Second operand 4 states. [2019-11-06 21:31:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:58,125 INFO L93 Difference]: Finished difference Result 1303 states and 2058 transitions. [2019-11-06 21:31:58,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:58,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2019-11-06 21:31:58,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:58,131 INFO L225 Difference]: With dead ends: 1303 [2019-11-06 21:31:58,131 INFO L226 Difference]: Without dead ends: 690 [2019-11-06 21:31:58,134 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2019-11-06 21:31:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-11-06 21:31:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2019-11-06 21:31:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-11-06 21:31:58,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1076 transitions. [2019-11-06 21:31:58,158 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1076 transitions. Word has length 130 [2019-11-06 21:31:58,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:58,158 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 1076 transitions. [2019-11-06 21:31:58,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1076 transitions. [2019-11-06 21:31:58,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-06 21:31:58,160 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:58,160 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:31:58,368 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:58,368 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:58,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:58,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1678605474, now seen corresponding path program 1 times [2019-11-06 21:31:58,369 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:58,370 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905354668] [2019-11-06 21:31:58,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat