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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:19:55,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:19:55,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:19:55,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:19:55,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:19:55,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:19:55,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:19:55,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:19:55,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:19:55,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:19:55,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:19:55,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:19:55,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:19:55,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:19:55,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:19:55,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:19:55,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:19:55,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:19:55,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:19:55,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:19:55,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:19:55,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:19:55,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:19:55,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:19:56,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:19:56,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:19:56,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:19:56,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:19:56,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:19:56,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:19:56,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:19:56,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:19:56,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:19:56,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:19:56,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:19:56,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:19:56,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:19:56,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:19:56,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:19:56,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:19:56,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:19:56,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:19:56,028 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:19:56,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:19:56,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:19:56,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:19:56,030 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:19:56,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:19:56,030 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:19:56,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:19:56,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:19:56,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:19:56,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:19:56,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:19:56,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:19:56,032 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:19:56,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:19:56,032 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:19:56,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:19:56,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:19:56,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:19:56,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:19:56,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:19:56,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:19:56,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:19:56,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:19:56,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:19:56,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:19:56,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:19:56,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:19:56,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:19:56,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:19:56,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:19:56,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:19:56,315 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:19:56,316 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:19:56,317 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c [2019-10-14 23:19:56,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f404021ad/e1e8d002095a428c82b288546571b228/FLAG8be725c5e [2019-10-14 23:19:56,995 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:19:56,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c [2019-10-14 23:19:57,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f404021ad/e1e8d002095a428c82b288546571b228/FLAG8be725c5e [2019-10-14 23:19:57,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f404021ad/e1e8d002095a428c82b288546571b228 [2019-10-14 23:19:57,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:19:57,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:19:57,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:19:57,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:19:57,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:19:57,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:57" (1/1) ... [2019-10-14 23:19:57,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30047e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:57, skipping insertion in model container [2019-10-14 23:19:57,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:57" (1/1) ... [2019-10-14 23:19:57,211 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:19:57,272 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:19:57,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:19:58,002 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:19:58,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:19:58,202 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:19:58,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:58 WrapperNode [2019-10-14 23:19:58,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:19:58,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:19:58,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:19:58,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:19:58,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:58" (1/1) ... [2019-10-14 23:19:58,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:58" (1/1) ... [2019-10-14 23:19:58,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:58" (1/1) ... [2019-10-14 23:19:58,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:58" (1/1) ... [2019-10-14 23:19:58,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:58" (1/1) ... [2019-10-14 23:19:58,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:58" (1/1) ... [2019-10-14 23:19:58,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:58" (1/1) ... [2019-10-14 23:19:58,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:19:58,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:19:58,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:19:58,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:19:58,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:19:58,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:19:58,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:19:58,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:19:58,497 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-14 23:19:58,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-14 23:19:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-14 23:19:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-14 23:19:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-14 23:19:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-14 23:19:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-14 23:19:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-14 23:19:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:19:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:19:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:19:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:19:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:19:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:19:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:19:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:19:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:19:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:19:58,506 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:19:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:19:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-14 23:19:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-14 23:19:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-14 23:19:58,507 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-14 23:19:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-14 23:19:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-14 23:19:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-14 23:19:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-14 23:19:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-14 23:19:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-14 23:19:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-14 23:19:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-14 23:19:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-14 23:19:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-14 23:19:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-14 23:19:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-14 23:19:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-14 23:19:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-14 23:19:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-14 23:19:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-14 23:19:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-14 23:19:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-14 23:19:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:19:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-14 23:19:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-14 23:19:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:19:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:19:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:19:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:19:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-14 23:19:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-14 23:19:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-14 23:19:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-14 23:19:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-14 23:19:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-14 23:19:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-14 23:19:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-14 23:19:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-14 23:19:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-14 23:19:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:19:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-14 23:19:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-14 23:19:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-14 23:19:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:19:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-14 23:19:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:19:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:19:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:19:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-14 23:19:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-14 23:19:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-14 23:19:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:19:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:19:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-14 23:19:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-14 23:19:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-14 23:19:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-14 23:19:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-14 23:19:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-14 23:19:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-14 23:19:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-14 23:19:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-10-14 23:19:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:19:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:19:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:19:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:19:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:19:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:19:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:19:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:19:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:19:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:19:58,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:19:58,527 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:19:58,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:19:58,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:19:58,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:19:58,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:19:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:19:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-14 23:19:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-14 23:19:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:19:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:19:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:19:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:19:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:19:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:19:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:19:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:19:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-14 23:19:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-14 23:19:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-14 23:19:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:19:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-14 23:19:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-14 23:19:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-14 23:19:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-14 23:19:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-14 23:19:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-14 23:19:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-14 23:19:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-14 23:19:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-14 23:19:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-14 23:19:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-14 23:19:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-14 23:19:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-14 23:19:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-14 23:19:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-14 23:19:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-14 23:19:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-14 23:19:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-14 23:19:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-14 23:19:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-14 23:19:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-14 23:19:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-14 23:19:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-10-14 23:19:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-14 23:19:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:19:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-10-14 23:19:58,540 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-14 23:19:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-14 23:19:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-14 23:19:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:19:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-14 23:19:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-14 23:19:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-14 23:19:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-14 23:19:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-14 23:19:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-14 23:19:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-14 23:19:58,549 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-14 23:19:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-14 23:19:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:19:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-14 23:19:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:19:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:19:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:19:58,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:19:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:19:58,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:20:00,765 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:20:00,765 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-14 23:20:00,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:00 BoogieIcfgContainer [2019-10-14 23:20:00,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:20:00,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:20:00,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:20:00,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:20:00,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:19:57" (1/3) ... [2019-10-14 23:20:00,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5420b3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:00, skipping insertion in model container [2019-10-14 23:20:00,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:58" (2/3) ... [2019-10-14 23:20:00,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5420b3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:00, skipping insertion in model container [2019-10-14 23:20:00,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:00" (3/3) ... [2019-10-14 23:20:00,774 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product17.cil.c [2019-10-14 23:20:00,784 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:20:00,793 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:20:00,806 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:20:00,843 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:20:00,844 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:20:00,844 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:20:00,844 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:20:00,844 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:20:00,844 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:20:00,844 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:20:00,844 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:20:00,877 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states. [2019-10-14 23:20:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-14 23:20:00,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:00,907 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:00,909 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:00,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1132113922, now seen corresponding path program 1 times [2019-10-14 23:20:00,929 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:00,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252432646] [2019-10-14 23:20:00,930 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:00,930 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:00,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:02,519 WARN L191 SmtUtils]: Spent 998.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:02,786 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,027 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:03,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252432646] [2019-10-14 23:20:03,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029012287] [2019-10-14 23:20:03,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:04,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 3207 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:20:04,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:20:04,110 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:04,110 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-10-14 23:20:04,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614543385] [2019-10-14 23:20:04,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:20:04,117 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:04,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:20:04,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:20:04,130 INFO L87 Difference]: Start difference. First operand 743 states. Second operand 2 states. [2019-10-14 23:20:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:04,206 INFO L93 Difference]: Finished difference Result 626 states and 1002 transitions. [2019-10-14 23:20:04,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:20:04,207 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 138 [2019-10-14 23:20:04,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:04,241 INFO L225 Difference]: With dead ends: 626 [2019-10-14 23:20:04,241 INFO L226 Difference]: Without dead ends: 589 [2019-10-14 23:20:04,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:20:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-10-14 23:20:04,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-10-14 23:20:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-10-14 23:20:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 947 transitions. [2019-10-14 23:20:04,344 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 947 transitions. Word has length 138 [2019-10-14 23:20:04,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:04,347 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 947 transitions. [2019-10-14 23:20:04,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:20:04,347 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 947 transitions. [2019-10-14 23:20:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-14 23:20:04,357 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:04,358 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:04,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:04,565 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:04,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:04,566 INFO L82 PathProgramCache]: Analyzing trace with hash 296066837, now seen corresponding path program 1 times [2019-10-14 23:20:04,566 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:04,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536277898] [2019-10-14 23:20:04,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:04,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:04,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:05,527 WARN L191 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:05,964 WARN L191 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,116 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:06,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536277898] [2019-10-14 23:20:06,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972819820] [2019-10-14 23:20:06,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:06,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 3210 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:07,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:07,095 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:07,095 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:07,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607333259] [2019-10-14 23:20:07,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:07,099 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:07,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:07,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:07,100 INFO L87 Difference]: Start difference. First operand 589 states and 947 transitions. Second operand 4 states. [2019-10-14 23:20:07,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:07,232 INFO L93 Difference]: Finished difference Result 1150 states and 1867 transitions. [2019-10-14 23:20:07,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:07,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-10-14 23:20:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:07,239 INFO L225 Difference]: With dead ends: 1150 [2019-10-14 23:20:07,239 INFO L226 Difference]: Without dead ends: 589 [2019-10-14 23:20:07,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-10-14 23:20:07,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-10-14 23:20:07,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-10-14 23:20:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 946 transitions. [2019-10-14 23:20:07,279 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 946 transitions. Word has length 140 [2019-10-14 23:20:07,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:07,279 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 946 transitions. [2019-10-14 23:20:07,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 946 transitions. [2019-10-14 23:20:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-14 23:20:07,284 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:07,284 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:07,491 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:07,492 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:07,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:07,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1619685945, now seen corresponding path program 1 times [2019-10-14 23:20:07,493 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:07,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700904097] [2019-10-14 23:20:07,494 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:07,494 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:07,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,387 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,632 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:09,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700904097] [2019-10-14 23:20:09,131 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92672923] [2019-10-14 23:20:09,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:09,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 3212 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:09,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:09,812 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:09,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:09,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774062067] [2019-10-14 23:20:09,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:09,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:09,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:09,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:09,814 INFO L87 Difference]: Start difference. First operand 589 states and 946 transitions. Second operand 4 states. [2019-10-14 23:20:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:09,917 INFO L93 Difference]: Finished difference Result 1150 states and 1865 transitions. [2019-10-14 23:20:09,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:09,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-10-14 23:20:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:09,925 INFO L225 Difference]: With dead ends: 1150 [2019-10-14 23:20:09,925 INFO L226 Difference]: Without dead ends: 589 [2019-10-14 23:20:09,930 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:09,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-10-14 23:20:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-10-14 23:20:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-10-14 23:20:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 945 transitions. [2019-10-14 23:20:09,979 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 945 transitions. Word has length 142 [2019-10-14 23:20:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:09,979 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 945 transitions. [2019-10-14 23:20:09,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:09,980 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 945 transitions. [2019-10-14 23:20:09,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-14 23:20:09,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:09,987 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:10,202 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:10,202 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:10,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:10,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1401716195, now seen corresponding path program 1 times [2019-10-14 23:20:10,204 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:10,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024987557] [2019-10-14 23:20:10,205 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:10,205 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:10,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,126 WARN L191 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,442 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,620 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:11,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024987557] [2019-10-14 23:20:11,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773766432] [2019-10-14 23:20:11,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:12,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:12,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:12,537 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:12,537 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:12,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858735132] [2019-10-14 23:20:12,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:12,539 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:12,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:12,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:12,541 INFO L87 Difference]: Start difference. First operand 589 states and 945 transitions. Second operand 4 states. [2019-10-14 23:20:12,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:12,641 INFO L93 Difference]: Finished difference Result 1157 states and 1872 transitions. [2019-10-14 23:20:12,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:12,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2019-10-14 23:20:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:12,647 INFO L225 Difference]: With dead ends: 1157 [2019-10-14 23:20:12,647 INFO L226 Difference]: Without dead ends: 598 [2019-10-14 23:20:12,650 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:12,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-10-14 23:20:12,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-10-14 23:20:12,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-14 23:20:12,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 957 transitions. [2019-10-14 23:20:12,679 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 957 transitions. Word has length 144 [2019-10-14 23:20:12,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:12,680 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 957 transitions. [2019-10-14 23:20:12,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 957 transitions. [2019-10-14 23:20:12,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-14 23:20:12,685 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:12,686 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:12,900 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:12,900 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:12,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:12,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1990322423, now seen corresponding path program 1 times [2019-10-14 23:20:12,901 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:12,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913738881] [2019-10-14 23:20:12,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:12,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:12,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,823 WARN L191 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,106 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,289 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:14,682 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913738881] [2019-10-14 23:20:14,682 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137525083] [2019-10-14 23:20:14,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:15,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 3215 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:15,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:15,361 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:15,361 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:15,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046284290] [2019-10-14 23:20:15,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:15,363 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:15,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:15,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:15,365 INFO L87 Difference]: Start difference. First operand 598 states and 957 transitions. Second operand 4 states. [2019-10-14 23:20:15,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:15,444 INFO L93 Difference]: Finished difference Result 1159 states and 1873 transitions. [2019-10-14 23:20:15,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:15,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-14 23:20:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:15,450 INFO L225 Difference]: With dead ends: 1159 [2019-10-14 23:20:15,450 INFO L226 Difference]: Without dead ends: 598 [2019-10-14 23:20:15,453 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-10-14 23:20:15,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-10-14 23:20:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-14 23:20:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 956 transitions. [2019-10-14 23:20:15,474 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 956 transitions. Word has length 145 [2019-10-14 23:20:15,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:15,476 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 956 transitions. [2019-10-14 23:20:15,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 956 transitions. [2019-10-14 23:20:15,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-14 23:20:15,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:15,481 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:15,696 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:15,696 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:15,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:15,697 INFO L82 PathProgramCache]: Analyzing trace with hash 769578593, now seen corresponding path program 1 times [2019-10-14 23:20:15,698 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:15,698 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725909334] [2019-10-14 23:20:15,698 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:15,698 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:15,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,771 WARN L191 SmtUtils]: Spent 949.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,022 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,223 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:17,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725909334] [2019-10-14 23:20:17,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297130670] [2019-10-14 23:20:17,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:18,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 3216 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:18,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:20:18,337 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:18,337 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:18,337 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331871990] [2019-10-14 23:20:18,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:18,338 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:18,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:18,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:18,338 INFO L87 Difference]: Start difference. First operand 598 states and 956 transitions. Second operand 4 states. [2019-10-14 23:20:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:18,416 INFO L93 Difference]: Finished difference Result 1159 states and 1872 transitions. [2019-10-14 23:20:18,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:18,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-10-14 23:20:18,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:18,423 INFO L225 Difference]: With dead ends: 1159 [2019-10-14 23:20:18,423 INFO L226 Difference]: Without dead ends: 598 [2019-10-14 23:20:18,427 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:18,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-10-14 23:20:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-10-14 23:20:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-14 23:20:18,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 955 transitions. [2019-10-14 23:20:18,449 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 955 transitions. Word has length 146 [2019-10-14 23:20:18,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:18,449 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 955 transitions. [2019-10-14 23:20:18,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 955 transitions. [2019-10-14 23:20:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-14 23:20:18,454 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:18,455 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:18,670 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:18,671 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:18,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:18,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1713500357, now seen corresponding path program 1 times [2019-10-14 23:20:18,671 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:18,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442783721] [2019-10-14 23:20:18,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:18,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:18,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,668 WARN L191 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:19,993 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,170 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 23:20:20,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442783721] [2019-10-14 23:20:20,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218076164] [2019-10-14 23:20:20,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:21,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 3217 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:20:21,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:21,139 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:21,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2019-10-14 23:20:21,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070845721] [2019-10-14 23:20:21,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:20:21,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:21,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:20:21,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:20:21,142 INFO L87 Difference]: Start difference. First operand 598 states and 955 transitions. Second operand 7 states. [2019-10-14 23:20:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:21,298 INFO L93 Difference]: Finished difference Result 1166 states and 1881 transitions. [2019-10-14 23:20:21,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:20:21,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2019-10-14 23:20:21,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:21,305 INFO L225 Difference]: With dead ends: 1166 [2019-10-14 23:20:21,305 INFO L226 Difference]: Without dead ends: 609 [2019-10-14 23:20:21,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:20:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-10-14 23:20:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 605. [2019-10-14 23:20:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-14 23:20:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 965 transitions. [2019-10-14 23:20:21,334 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 965 transitions. Word has length 147 [2019-10-14 23:20:21,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:21,334 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 965 transitions. [2019-10-14 23:20:21,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:20:21,334 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 965 transitions. [2019-10-14 23:20:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-14 23:20:21,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:21,339 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:21,546 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:21,547 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:21,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1757785468, now seen corresponding path program 1 times [2019-10-14 23:20:21,547 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:21,548 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425306232] [2019-10-14 23:20:21,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:21,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:21,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,529 WARN L191 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,776 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,927 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:23,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425306232] [2019-10-14 23:20:23,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767325285] [2019-10-14 23:20:23,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:23,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 3216 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:23,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:23,784 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:23,784 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:23,785 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133745878] [2019-10-14 23:20:23,788 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:23,788 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:23,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:23,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:23,788 INFO L87 Difference]: Start difference. First operand 605 states and 965 transitions. Second operand 4 states. [2019-10-14 23:20:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:23,940 INFO L93 Difference]: Finished difference Result 1171 states and 1892 transitions. [2019-10-14 23:20:23,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:23,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-14 23:20:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:23,945 INFO L225 Difference]: With dead ends: 1171 [2019-10-14 23:20:23,945 INFO L226 Difference]: Without dead ends: 605 [2019-10-14 23:20:23,948 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:23,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-14 23:20:23,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2019-10-14 23:20:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-14 23:20:23,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 960 transitions. [2019-10-14 23:20:23,975 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 960 transitions. Word has length 147 [2019-10-14 23:20:23,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:23,975 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 960 transitions. [2019-10-14 23:20:23,975 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:23,975 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 960 transitions. [2019-10-14 23:20:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-14 23:20:23,979 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:23,981 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:24,197 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:24,197 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:24,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:24,198 INFO L82 PathProgramCache]: Analyzing trace with hash -427728476, now seen corresponding path program 1 times [2019-10-14 23:20:24,199 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:24,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986570108] [2019-10-14 23:20:24,199 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:24,199 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:24,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,089 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,338 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,500 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:20:25,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986570108] [2019-10-14 23:20:25,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523537463] [2019-10-14 23:20:25,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:26,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 3218 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:26,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:26,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:26,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-10-14 23:20:26,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037577474] [2019-10-14 23:20:26,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:26,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:26,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:26,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:20:26,361 INFO L87 Difference]: Start difference. First operand 605 states and 960 transitions. Second operand 4 states. [2019-10-14 23:20:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:26,507 INFO L93 Difference]: Finished difference Result 1171 states and 1882 transitions. [2019-10-14 23:20:26,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:20:26,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-14 23:20:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:26,513 INFO L225 Difference]: With dead ends: 1171 [2019-10-14 23:20:26,515 INFO L226 Difference]: Without dead ends: 605 [2019-10-14 23:20:26,518 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:20:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-14 23:20:26,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2019-10-14 23:20:26,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-14 23:20:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 955 transitions. [2019-10-14 23:20:26,551 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 955 transitions. Word has length 149 [2019-10-14 23:20:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:26,551 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 955 transitions. [2019-10-14 23:20:26,551 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 955 transitions. [2019-10-14 23:20:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 23:20:26,555 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:26,556 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:26,767 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:26,768 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:26,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:26,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1481059154, now seen corresponding path program 1 times [2019-10-14 23:20:26,769 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:26,770 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602318798] [2019-10-14 23:20:26,770 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:26,770 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:26,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,662 WARN L191 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:27,909 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,078 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-14 23:20:28,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602318798] [2019-10-14 23:20:28,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661652100] [2019-10-14 23:20:28,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:28,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 3222 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:20:28,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:20:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:20:28,992 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:20:28,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2019-10-14 23:20:28,992 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077869115] [2019-10-14 23:20:28,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:20:28,996 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:20:28,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:20:28,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:20:28,997 INFO L87 Difference]: Start difference. First operand 605 states and 955 transitions. Second operand 4 states. [2019-10-14 23:20:29,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:20:29,175 INFO L93 Difference]: Finished difference Result 1207 states and 1930 transitions. [2019-10-14 23:20:29,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:20:29,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-10-14 23:20:29,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:20:29,183 INFO L225 Difference]: With dead ends: 1207 [2019-10-14 23:20:29,184 INFO L226 Difference]: Without dead ends: 647 [2019-10-14 23:20:29,188 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:20:29,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2019-10-14 23:20:29,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 644. [2019-10-14 23:20:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-10-14 23:20:29,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1018 transitions. [2019-10-14 23:20:29,219 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1018 transitions. Word has length 152 [2019-10-14 23:20:29,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:20:29,220 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 1018 transitions. [2019-10-14 23:20:29,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:20:29,221 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1018 transitions. [2019-10-14 23:20:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 23:20:29,227 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:20:29,227 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:20:29,435 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:20:29,436 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:20:29,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:20:29,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2098391086, now seen corresponding path program 1 times [2019-10-14 23:20:29,437 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:20:29,437 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94475663] [2019-10-14 23:20:29,438 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:29,438 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:20:29,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:20:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,329 WARN L191 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-10-14 23:20:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,568 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-14 23:20:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,729 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-10-14 23:20:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:20:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:20:31,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94475663] [2019-10-14 23:20:31,039 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301516536] [2019-10-14 23:20:31,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true