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_spec13_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:19:41,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:19:41,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:19:41,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:19:41,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:19:41,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:19:41,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:19:41,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:19:41,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:19:41,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:19:41,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:19:41,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:19:41,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:19:41,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:19:41,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:19:41,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:19:41,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:19:41,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:19:41,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:19:41,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:19:41,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:19:41,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:19:41,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:19:41,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:19:41,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:19:41,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:19:41,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:19:41,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:19:41,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:19:41,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:19:41,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:19:41,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:19:41,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:19:41,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:19:41,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:19:41,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:19:41,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:19:41,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:19:41,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:19:41,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:19:41,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:19:41,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:19:41,300 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:19:41,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:19:41,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:19:41,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:19:41,306 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:19:41,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:19:41,306 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:19:41,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:19:41,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:19:41,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:19:41,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:19:41,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:19:41,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:19:41,309 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:19:41,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:19:41,309 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:19:41,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:19:41,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:19:41,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:19:41,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:19:41,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:19:41,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:41,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:19:41,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:19:41,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:19:41,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:19:41,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:19:41,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:19:41,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:19:41,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:19:41,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:19:41,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:19:41,608 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:19:41,609 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:19:41,609 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c [2019-10-13 19:19:41,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28aba3c08/a47cc16bffd344a5b0299e75497945cc/FLAGd3ede6d5a [2019-10-13 19:19:42,346 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:19:42,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product29.cil.c [2019-10-13 19:19:42,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28aba3c08/a47cc16bffd344a5b0299e75497945cc/FLAGd3ede6d5a [2019-10-13 19:19:42,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28aba3c08/a47cc16bffd344a5b0299e75497945cc [2019-10-13 19:19:42,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:19:42,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:19:42,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:42,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:19:42,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:19:42,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:42" (1/1) ... [2019-10-13 19:19:42,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12de4e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:42, skipping insertion in model container [2019-10-13 19:19:42,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:19:42" (1/1) ... [2019-10-13 19:19:42,543 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:19:42,640 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:19:43,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:43,402 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:19:43,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:19:43,608 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:19:43,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43 WrapperNode [2019-10-13 19:19:43,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:19:43,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:19:43,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:19:43,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:19:43,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... [2019-10-13 19:19:43,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:19:43,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:19:43,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:19:43,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:19:43,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:19:43,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:19:43,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:19:43,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:43,884 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 19:19:43,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 19:19:43,885 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 19:19:43,885 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 19:19:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 19:19:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 19:19:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 19:19:43,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 19:19:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:19:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 19:19:43,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 19:19:43,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 19:19:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 19:19:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 19:19:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 19:19:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 19:19:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 19:19:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 19:19:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 19:19:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 19:19:43,892 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 19:19:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 19:19:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 19:19:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 19:19:43,893 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 19:19:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 19:19:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 19:19:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 19:19:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 19:19:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:19:43,894 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 19:19:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 19:19:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 19:19:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:19:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:43,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 19:19:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 19:19:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:19:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 19:19:43,896 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 19:19:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:19:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 19:19:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 19:19:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 19:19:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 19:19:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 19:19:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 19:19:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 19:19:43,898 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 19:19:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 19:19:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 19:19:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:19:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 19:19:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 19:19:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 19:19:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:19:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 19:19:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:19:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:19:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:19:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:19:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:19:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:19:43,901 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:19:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:19:43,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:19:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:19:43,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:19:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:19:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 19:19:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 19:19:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 19:19:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 19:19:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 19:19:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 19:19:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 19:19:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 19:19:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 19:19:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 19:19:43,907 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 19:19:43,907 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 19:19:43,907 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:19:43,907 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:19:43,908 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 19:19:43,908 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 19:19:43,908 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 19:19:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:19:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 19:19:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:19:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 19:19:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 19:19:43,909 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 19:19:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 19:19:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 19:19:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 19:19:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 19:19:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 19:19:43,910 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 19:19:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 19:19:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 19:19:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 19:19:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 19:19:43,911 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 19:19:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 19:19:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 19:19:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 19:19:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 19:19:43,912 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 19:19:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 19:19:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 19:19:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 19:19:43,913 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 19:19:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 19:19:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 19:19:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-13 19:19:43,915 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-13 19:19:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:19:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 19:19:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:19:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 19:19:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 19:19:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:19:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 19:19:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 19:19:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 19:19:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 19:19:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 19:19:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 19:19:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 19:19:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:19:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 19:19:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:19:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:19:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:19:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:19:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:19:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:19:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:19:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:19:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:19:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:19:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:19:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:19:43,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:19:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:19:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:19:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:19:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:19:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:19:43,933 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:19:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:19:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:19:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:19:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:19:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:19:43,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:19:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:19:46,531 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:19:46,531 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:19:46,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:46 BoogieIcfgContainer [2019-10-13 19:19:46,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:19:46,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:19:46,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:19:46,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:19:46,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:19:42" (1/3) ... [2019-10-13 19:19:46,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8d6ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:46, skipping insertion in model container [2019-10-13 19:19:46,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:19:43" (2/3) ... [2019-10-13 19:19:46,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8d6ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:19:46, skipping insertion in model container [2019-10-13 19:19:46,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:19:46" (3/3) ... [2019-10-13 19:19:46,541 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2019-10-13 19:19:46,551 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:19:46,562 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:19:46,573 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:19:46,616 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:19:46,616 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:19:46,616 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:19:46,617 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:19:46,617 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:19:46,617 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:19:46,617 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:19:46,617 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:19:46,660 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states. [2019-10-13 19:19:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:19:46,696 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:46,698 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:46,700 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:46,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:46,706 INFO L82 PathProgramCache]: Analyzing trace with hash -332119901, now seen corresponding path program 1 times [2019-10-13 19:19:46,715 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:46,715 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088373522] [2019-10-13 19:19:46,716 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:46,716 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:46,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,251 WARN L191 SmtUtils]: Spent 891.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:48,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088373522] [2019-10-13 19:19:48,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471344584] [2019-10-13 19:19:48,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:49,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:19:49,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:19:49,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:49,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 12 [2019-10-13 19:19:49,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848817988] [2019-10-13 19:19:49,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:19:49,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:49,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:19:49,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:49,479 INFO L87 Difference]: Start difference. First operand 804 states. Second operand 2 states. [2019-10-13 19:19:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:49,623 INFO L93 Difference]: Finished difference Result 1301 states and 2111 transitions. [2019-10-13 19:19:49,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:19:49,625 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 152 [2019-10-13 19:19:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:49,652 INFO L225 Difference]: With dead ends: 1301 [2019-10-13 19:19:49,653 INFO L226 Difference]: Without dead ends: 658 [2019-10-13 19:19:49,666 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2019-10-13 19:19:49,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2019-10-13 19:19:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2019-10-13 19:19:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1047 transitions. [2019-10-13 19:19:49,823 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1047 transitions. Word has length 152 [2019-10-13 19:19:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:49,826 INFO L462 AbstractCegarLoop]: Abstraction has 658 states and 1047 transitions. [2019-10-13 19:19:49,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:19:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1047 transitions. [2019-10-13 19:19:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:19:49,838 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:49,839 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:50,048 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:50,049 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:50,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:50,050 INFO L82 PathProgramCache]: Analyzing trace with hash 474844739, now seen corresponding path program 1 times [2019-10-13 19:19:50,050 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:50,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313428213] [2019-10-13 19:19:50,051 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:50,051 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:50,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,250 WARN L191 SmtUtils]: Spent 968.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:51,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313428213] [2019-10-13 19:19:51,686 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477341664] [2019-10-13 19:19:51,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:52,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:52,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:19:52,327 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:52,327 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-10-13 19:19:52,328 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674244831] [2019-10-13 19:19:52,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:52,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:52,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:52,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:52,330 INFO L87 Difference]: Start difference. First operand 658 states and 1047 transitions. Second operand 4 states. [2019-10-13 19:19:52,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:52,464 INFO L93 Difference]: Finished difference Result 1299 states and 2084 transitions. [2019-10-13 19:19:52,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:52,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-10-13 19:19:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:52,472 INFO L225 Difference]: With dead ends: 1299 [2019-10-13 19:19:52,472 INFO L226 Difference]: Without dead ends: 667 [2019-10-13 19:19:52,477 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:19:52,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2019-10-13 19:19:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2019-10-13 19:19:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2019-10-13 19:19:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1061 transitions. [2019-10-13 19:19:52,528 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1061 transitions. Word has length 152 [2019-10-13 19:19:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:52,528 INFO L462 AbstractCegarLoop]: Abstraction has 667 states and 1061 transitions. [2019-10-13 19:19:52,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1061 transitions. [2019-10-13 19:19:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 19:19:52,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:52,538 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:52,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:52,754 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:52,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:52,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1998614119, now seen corresponding path program 1 times [2019-10-13 19:19:52,755 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:52,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377618957] [2019-10-13 19:19:52,756 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:52,757 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:52,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,664 WARN L191 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:19:54,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377618957] [2019-10-13 19:19:54,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009319966] [2019-10-13 19:19:54,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:54,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:19:54,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:19:54,920 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:54,921 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-10-13 19:19:54,921 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699904164] [2019-10-13 19:19:54,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:54,924 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:54,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:54,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:19:54,926 INFO L87 Difference]: Start difference. First operand 667 states and 1061 transitions. Second operand 7 states. [2019-10-13 19:19:55,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:55,106 INFO L93 Difference]: Finished difference Result 1317 states and 2109 transitions. [2019-10-13 19:19:55,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:19:55,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2019-10-13 19:19:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:55,116 INFO L225 Difference]: With dead ends: 1317 [2019-10-13 19:19:55,116 INFO L226 Difference]: Without dead ends: 678 [2019-10-13 19:19:55,121 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:19:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2019-10-13 19:19:55,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 674. [2019-10-13 19:19:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2019-10-13 19:19:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1073 transitions. [2019-10-13 19:19:55,173 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1073 transitions. Word has length 154 [2019-10-13 19:19:55,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:55,174 INFO L462 AbstractCegarLoop]: Abstraction has 674 states and 1073 transitions. [2019-10-13 19:19:55,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:19:55,174 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1073 transitions. [2019-10-13 19:19:55,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 19:19:55,181 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:55,182 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:55,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:55,390 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:55,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:55,390 INFO L82 PathProgramCache]: Analyzing trace with hash -118777742, now seen corresponding path program 1 times [2019-10-13 19:19:55,390 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:55,391 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668137360] [2019-10-13 19:19:55,391 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:55,391 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:55,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,339 WARN L191 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:19:56,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668137360] [2019-10-13 19:19:56,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761274507] [2019-10-13 19:19:56,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:57,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:19:57,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:19:57,343 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:57,343 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:19:57,343 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645768965] [2019-10-13 19:19:57,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:19:57,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:57,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:19:57,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:19:57,345 INFO L87 Difference]: Start difference. First operand 674 states and 1073 transitions. Second operand 4 states. [2019-10-13 19:19:57,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:19:57,452 INFO L93 Difference]: Finished difference Result 1333 states and 2134 transitions. [2019-10-13 19:19:57,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:19:57,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-10-13 19:19:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:19:57,460 INFO L225 Difference]: With dead ends: 1333 [2019-10-13 19:19:57,461 INFO L226 Difference]: Without dead ends: 685 [2019-10-13 19:19:57,465 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:19:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2019-10-13 19:19:57,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 683. [2019-10-13 19:19:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2019-10-13 19:19:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1081 transitions. [2019-10-13 19:19:57,498 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1081 transitions. Word has length 155 [2019-10-13 19:19:57,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:19:57,498 INFO L462 AbstractCegarLoop]: Abstraction has 683 states and 1081 transitions. [2019-10-13 19:19:57,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:19:57,499 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1081 transitions. [2019-10-13 19:19:57,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 19:19:57,505 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:19:57,505 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:19:57,713 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:57,714 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:19:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:19:57,714 INFO L82 PathProgramCache]: Analyzing trace with hash 31725172, now seen corresponding path program 1 times [2019-10-13 19:19:57,714 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:19:57,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988225184] [2019-10-13 19:19:57,715 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:57,715 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:19:57,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:19:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,768 WARN L191 SmtUtils]: Spent 959.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:19:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:19:59,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988225184] [2019-10-13 19:19:59,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372680080] [2019-10-13 19:19:59,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:19:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:19:59,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:19:59,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:19:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:19:59,808 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:19:59,808 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2019-10-13 19:19:59,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383042467] [2019-10-13 19:19:59,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:19:59,811 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:19:59,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:19:59,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:19:59,812 INFO L87 Difference]: Start difference. First operand 683 states and 1081 transitions. Second operand 7 states. [2019-10-13 19:20:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:00,026 INFO L93 Difference]: Finished difference Result 1334 states and 2125 transitions. [2019-10-13 19:20:00,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:00,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2019-10-13 19:20:00,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:00,041 INFO L225 Difference]: With dead ends: 1334 [2019-10-13 19:20:00,041 INFO L226 Difference]: Without dead ends: 692 [2019-10-13 19:20:00,048 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:20:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2019-10-13 19:20:00,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 683. [2019-10-13 19:20:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2019-10-13 19:20:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1081 transitions. [2019-10-13 19:20:00,095 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1081 transitions. Word has length 155 [2019-10-13 19:20:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:00,096 INFO L462 AbstractCegarLoop]: Abstraction has 683 states and 1081 transitions. [2019-10-13 19:20:00,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1081 transitions. [2019-10-13 19:20:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 19:20:00,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:00,105 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:00,315 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:00,316 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:00,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:00,316 INFO L82 PathProgramCache]: Analyzing trace with hash -615340944, now seen corresponding path program 1 times [2019-10-13 19:20:00,317 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:00,317 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911138581] [2019-10-13 19:20:00,317 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:00,318 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:00,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,407 WARN L191 SmtUtils]: Spent 944.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:20:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:20:01,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911138581] [2019-10-13 19:20:01,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690750269] [2019-10-13 19:20:01,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:02,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:02,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:20:02,337 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:02,338 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:20:02,338 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074760898] [2019-10-13 19:20:02,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:02,339 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:02,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:02,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:02,340 INFO L87 Difference]: Start difference. First operand 683 states and 1081 transitions. Second operand 4 states. [2019-10-13 19:20:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:02,626 INFO L93 Difference]: Finished difference Result 1367 states and 2195 transitions. [2019-10-13 19:20:02,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:02,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-10-13 19:20:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:02,632 INFO L225 Difference]: With dead ends: 1367 [2019-10-13 19:20:02,632 INFO L226 Difference]: Without dead ends: 725 [2019-10-13 19:20:02,636 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2019-10-13 19:20:02,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 722. [2019-10-13 19:20:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-10-13 19:20:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1154 transitions. [2019-10-13 19:20:02,664 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1154 transitions. Word has length 158 [2019-10-13 19:20:02,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:02,664 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 1154 transitions. [2019-10-13 19:20:02,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1154 transitions. [2019-10-13 19:20:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 19:20:02,670 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:02,670 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:02,877 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:02,877 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:02,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:02,878 INFO L82 PathProgramCache]: Analyzing trace with hash -35711704, now seen corresponding path program 1 times [2019-10-13 19:20:02,878 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:02,878 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175830889] [2019-10-13 19:20:02,878 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:02,879 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:02,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,728 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:20:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:04,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175830889] [2019-10-13 19:20:04,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132140022] [2019-10-13 19:20:04,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:04,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:04,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:20:04,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:04,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:20:04,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820655271] [2019-10-13 19:20:04,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:04,670 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:04,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:04,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:04,671 INFO L87 Difference]: Start difference. First operand 722 states and 1154 transitions. Second operand 4 states. [2019-10-13 19:20:04,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:04,765 INFO L93 Difference]: Finished difference Result 1391 states and 2241 transitions. [2019-10-13 19:20:04,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:04,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-10-13 19:20:04,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:04,772 INFO L225 Difference]: With dead ends: 1391 [2019-10-13 19:20:04,773 INFO L226 Difference]: Without dead ends: 722 [2019-10-13 19:20:04,778 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:04,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2019-10-13 19:20:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2019-10-13 19:20:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-10-13 19:20:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1149 transitions. [2019-10-13 19:20:04,811 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1149 transitions. Word has length 160 [2019-10-13 19:20:04,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:04,812 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 1149 transitions. [2019-10-13 19:20:04,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1149 transitions. [2019-10-13 19:20:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 19:20:04,818 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:04,818 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:05,034 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:05,034 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:05,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:05,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1690094261, now seen corresponding path program 1 times [2019-10-13 19:20:05,035 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:05,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890277906] [2019-10-13 19:20:05,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:05,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:05,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,901 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:20:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:06,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890277906] [2019-10-13 19:20:06,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923965791] [2019-10-13 19:20:06,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:06,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 2989 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:06,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:20:06,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:06,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-10-13 19:20:06,803 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124115975] [2019-10-13 19:20:06,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:06,804 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:06,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:06,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:06,805 INFO L87 Difference]: Start difference. First operand 722 states and 1149 transitions. Second operand 7 states. [2019-10-13 19:20:06,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:06,963 INFO L93 Difference]: Finished difference Result 1359 states and 2173 transitions. [2019-10-13 19:20:06,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:06,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2019-10-13 19:20:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:06,969 INFO L225 Difference]: With dead ends: 1359 [2019-10-13 19:20:06,969 INFO L226 Difference]: Without dead ends: 736 [2019-10-13 19:20:06,973 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:20:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2019-10-13 19:20:06,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 729. [2019-10-13 19:20:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2019-10-13 19:20:07,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1160 transitions. [2019-10-13 19:20:07,000 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1160 transitions. Word has length 161 [2019-10-13 19:20:07,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:07,001 INFO L462 AbstractCegarLoop]: Abstraction has 729 states and 1160 transitions. [2019-10-13 19:20:07,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:07,001 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1160 transitions. [2019-10-13 19:20:07,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 19:20:07,006 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:07,006 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:07,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:07,223 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:07,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:07,224 INFO L82 PathProgramCache]: Analyzing trace with hash -696135748, now seen corresponding path program 1 times [2019-10-13 19:20:07,224 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:07,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631731787] [2019-10-13 19:20:07,225 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:07,225 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:07,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,142 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:20:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:20:08,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631731787] [2019-10-13 19:20:08,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091640878] [2019-10-13 19:20:08,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:08,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 19:20:08,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:20:09,077 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:09,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-10-13 19:20:09,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776097891] [2019-10-13 19:20:09,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:20:09,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:09,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:20:09,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:20:09,078 INFO L87 Difference]: Start difference. First operand 729 states and 1160 transitions. Second operand 7 states. [2019-10-13 19:20:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:09,218 INFO L93 Difference]: Finished difference Result 1359 states and 2172 transitions. [2019-10-13 19:20:09,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:20:09,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2019-10-13 19:20:09,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:09,225 INFO L225 Difference]: With dead ends: 1359 [2019-10-13 19:20:09,225 INFO L226 Difference]: Without dead ends: 736 [2019-10-13 19:20:09,229 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:20:09,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2019-10-13 19:20:09,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 726. [2019-10-13 19:20:09,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2019-10-13 19:20:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1154 transitions. [2019-10-13 19:20:09,257 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1154 transitions. Word has length 162 [2019-10-13 19:20:09,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:09,257 INFO L462 AbstractCegarLoop]: Abstraction has 726 states and 1154 transitions. [2019-10-13 19:20:09,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:20:09,258 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1154 transitions. [2019-10-13 19:20:09,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 19:20:09,263 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:09,263 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:09,471 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:09,472 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:09,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:09,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1199463028, now seen corresponding path program 1 times [2019-10-13 19:20:09,473 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:09,473 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034321662] [2019-10-13 19:20:09,473 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:09,473 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:09,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,326 WARN L191 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:20:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,461 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:20:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:10,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034321662] [2019-10-13 19:20:10,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568504052] [2019-10-13 19:20:10,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:11,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:11,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 19:20:11,218 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:11,218 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:20:11,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204941159] [2019-10-13 19:20:11,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:11,219 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:11,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:11,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:11,220 INFO L87 Difference]: Start difference. First operand 726 states and 1154 transitions. Second operand 4 states. [2019-10-13 19:20:11,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:11,291 INFO L93 Difference]: Finished difference Result 1395 states and 2241 transitions. [2019-10-13 19:20:11,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:20:11,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2019-10-13 19:20:11,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:11,298 INFO L225 Difference]: With dead ends: 1395 [2019-10-13 19:20:11,298 INFO L226 Difference]: Without dead ends: 726 [2019-10-13 19:20:11,303 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:11,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2019-10-13 19:20:11,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2019-10-13 19:20:11,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2019-10-13 19:20:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1151 transitions. [2019-10-13 19:20:11,345 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1151 transitions. Word has length 162 [2019-10-13 19:20:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:11,345 INFO L462 AbstractCegarLoop]: Abstraction has 726 states and 1151 transitions. [2019-10-13 19:20:11,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1151 transitions. [2019-10-13 19:20:11,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 19:20:11,352 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:11,352 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:11,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:11,568 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:11,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:11,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1193684081, now seen corresponding path program 1 times [2019-10-13 19:20:11,569 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:11,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043135949] [2019-10-13 19:20:11,569 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:11,569 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:11,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,549 WARN L191 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:20:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:20:12,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043135949] [2019-10-13 19:20:12,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256627338] [2019-10-13 19:20:12,864 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 [2019-10-13 19:20:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:13,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:20:13,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:20:13,461 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:13,461 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-10-13 19:20:13,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490052286] [2019-10-13 19:20:13,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:13,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:13,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:13,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:20:13,464 INFO L87 Difference]: Start difference. First operand 726 states and 1151 transitions. Second operand 4 states. [2019-10-13 19:20:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:13,670 INFO L93 Difference]: Finished difference Result 1391 states and 2235 transitions. [2019-10-13 19:20:13,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:13,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2019-10-13 19:20:13,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:13,677 INFO L225 Difference]: With dead ends: 1391 [2019-10-13 19:20:13,677 INFO L226 Difference]: Without dead ends: 768 [2019-10-13 19:20:13,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:20:13,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-10-13 19:20:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2019-10-13 19:20:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2019-10-13 19:20:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1228 transitions. [2019-10-13 19:20:13,715 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1228 transitions. Word has length 163 [2019-10-13 19:20:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:13,717 INFO L462 AbstractCegarLoop]: Abstraction has 768 states and 1228 transitions. [2019-10-13 19:20:13,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:13,717 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1228 transitions. [2019-10-13 19:20:13,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 19:20:13,722 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:13,723 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:13,932 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:13,932 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:13,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:13,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1100933032, now seen corresponding path program 1 times [2019-10-13 19:20:13,933 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:13,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496238917] [2019-10-13 19:20:13,934 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:13,934 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:13,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,758 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-10-13 19:20:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,914 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-10-13 19:20:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:20:15,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496238917] [2019-10-13 19:20:15,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866683106] [2019-10-13 19:20:15,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:20:15,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:20:15,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:20:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:20:15,725 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:20:15,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 9 [2019-10-13 19:20:15,725 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479626891] [2019-10-13 19:20:15,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:20:15,726 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:20:15,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:20:15,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:20:15,727 INFO L87 Difference]: Start difference. First operand 768 states and 1228 transitions. Second operand 4 states. [2019-10-13 19:20:15,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:20:15,789 INFO L93 Difference]: Finished difference Result 1495 states and 2412 transitions. [2019-10-13 19:20:15,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:20:15,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2019-10-13 19:20:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:20:15,795 INFO L225 Difference]: With dead ends: 1495 [2019-10-13 19:20:15,795 INFO L226 Difference]: Without dead ends: 745 [2019-10-13 19:20:15,799 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:20:15,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2019-10-13 19:20:15,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2019-10-13 19:20:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2019-10-13 19:20:15,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1185 transitions. [2019-10-13 19:20:15,826 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1185 transitions. Word has length 165 [2019-10-13 19:20:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:20:15,827 INFO L462 AbstractCegarLoop]: Abstraction has 745 states and 1185 transitions. [2019-10-13 19:20:15,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:20:15,827 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1185 transitions. [2019-10-13 19:20:15,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 19:20:15,833 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:20:15,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:20:16,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:20:16,042 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:20:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:20:16,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1009694125, now seen corresponding path program 1 times [2019-10-13 19:20:16,043 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:20:16,043 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109195890] [2019-10-13 19:20:16,043 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:16,043 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:20:16,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:20:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat