/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:30:18,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:30:18,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:30:18,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:30:18,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:30:18,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:30:18,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:30:18,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:30:18,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:30:18,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:30:18,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:30:18,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:30:18,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:30:18,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:30:18,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:30:18,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:30:18,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:30:18,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:30:18,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:30:18,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:30:18,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:30:18,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:30:18,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:30:18,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:30:18,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:30:18,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:30:18,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:30:18,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:30:18,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:30:18,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:30:18,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:30:18,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:30:18,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:30:18,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:30:18,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:30:18,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:30:18,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:30:18,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:30:18,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:30:18,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:30:18,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:30:18,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:30:18,275 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:30:18,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:30:18,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:30:18,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:30:18,277 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:30:18,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:30:18,277 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:30:18,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:30:18,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:30:18,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:30:18,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:30:18,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:30:18,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:30:18,279 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:30:18,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:30:18,279 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:30:18,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:30:18,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:30:18,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:30:18,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:30:18,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:30:18,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:30:18,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:30:18,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:30:18,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:30:18,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:30:18,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:30:18,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:30:18,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:30:18,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:30:18,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:30:18,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:30:18,635 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:30:18,635 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:30:18,636 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c [2019-11-06 21:30:18,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f3ac8a6/390e74075c0a4071842b26c59862c93c/FLAG85fd76e9e [2019-11-06 21:30:19,347 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:30:19,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product17.cil.c [2019-11-06 21:30:19,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f3ac8a6/390e74075c0a4071842b26c59862c93c/FLAG85fd76e9e [2019-11-06 21:30:19,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f3ac8a6/390e74075c0a4071842b26c59862c93c [2019-11-06 21:30:19,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:30:19,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:30:19,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:30:19,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:30:19,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:30:19,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:30:19" (1/1) ... [2019-11-06 21:30:19,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115225be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:19, skipping insertion in model container [2019-11-06 21:30:19,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:30:19" (1/1) ... [2019-11-06 21:30:19,568 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:30:19,646 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:30:20,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:30:20,319 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:30:20,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:30:20,545 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:30:20,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:20 WrapperNode [2019-11-06 21:30:20,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:30:20,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:30:20,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:30:20,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:30:20,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:20" (1/1) ... [2019-11-06 21:30:20,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:20" (1/1) ... [2019-11-06 21:30:20,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:20" (1/1) ... [2019-11-06 21:30:20,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:20" (1/1) ... [2019-11-06 21:30:20,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:20" (1/1) ... [2019-11-06 21:30:20,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:20" (1/1) ... [2019-11-06 21:30:20,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:20" (1/1) ... [2019-11-06 21:30:20,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:30:20,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:30:20,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:30:20,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:30:20,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:30:20,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:30:20,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:30:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:30:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:30:20,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:30:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:30:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:30:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:30:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:30:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:30:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:30:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:30:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:30:20,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:30:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:30:20,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:30:20,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:30:20,849 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:30:20,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:30:20,849 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:30:20,849 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:30:20,850 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:30:20,850 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:30:20,850 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:30:20,850 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:30:20,850 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:30:20,851 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:30:20,851 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:30:20,851 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:30:20,851 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:30:20,851 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:30:20,852 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:30:20,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:30:20,852 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:30:20,852 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:30:20,853 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:30:20,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:30:20,853 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:30:20,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:30:20,853 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:30:20,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:30:20,854 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:30:20,854 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:30:20,854 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:30:20,854 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:30:20,855 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:30:20,855 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:30:20,855 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:30:20,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:30:20,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:30:20,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:30:20,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:30:20,856 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:30:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:30:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:30:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:30:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:30:20,857 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:30:20,858 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:30:20,858 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:30:20,859 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:30:20,859 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:30:20,859 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:30:20,859 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:30:20,859 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:30:20,859 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:30:20,860 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:30:20,860 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:30:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:30:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:30:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:30:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:30:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:30:20,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:30:20,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:30:20,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:30:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:30:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:30:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:30:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:30:20,863 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:30:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:30:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:30:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:30:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:30:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:30:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:30:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:30:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:30:20,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:30:20,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:30:20,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:30:20,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:30:20,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:30:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:30:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:30:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:30:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:30:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:30:20,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:30:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:30:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:30:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:30:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:30:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:30:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:30:20,870 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:30:20,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:30:20,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:30:20,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:30:20,870 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:30:20,870 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:30:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:30:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:30:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:30:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:30:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:30:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:30:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:30:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:30:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:30:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:30:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:30:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:30:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:30:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:30:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:30:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:30:20,877 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:30:20,877 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:30:20,877 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:30:20,878 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:30:20,878 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:30:20,878 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:30:20,878 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:30:20,878 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:30:20,878 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:30:20,879 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:30:20,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:30:20,880 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:30:20,883 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:30:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:30:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:30:20,885 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:30:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:30:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:30:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:30:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:30:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:30:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:30:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:30:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:30:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:30:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:30:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:30:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:30:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:30:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:30:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:30:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:30:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:30:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:30:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:30:23,492 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:30:23,492 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:30:23,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:30:23 BoogieIcfgContainer [2019-11-06 21:30:23,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:30:23,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:30:23,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:30:23,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:30:23,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:30:19" (1/3) ... [2019-11-06 21:30:23,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6531f821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:30:23, skipping insertion in model container [2019-11-06 21:30:23,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:30:20" (2/3) ... [2019-11-06 21:30:23,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6531f821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:30:23, skipping insertion in model container [2019-11-06 21:30:23,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:30:23" (3/3) ... [2019-11-06 21:30:23,504 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product17.cil.c [2019-11-06 21:30:23,514 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:30:23,524 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:30:23,535 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:30:23,586 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:30:23,587 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:30:23,587 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:30:23,587 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:30:23,587 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:30:23,587 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:30:23,587 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:30:23,587 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:30:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states. [2019-11-06 21:30:23,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-11-06 21:30:23,665 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:23,666 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:23,669 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:23,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1132113922, now seen corresponding path program 1 times [2019-11-06 21:30:23,683 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:23,684 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492744439] [2019-11-06 21:30:23,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:25,405 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:30:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:25,734 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:30:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,034 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:30:26,474 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492744439] [2019-11-06 21:30:26,475 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10346075] [2019-11-06 21:30:26,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:27,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 3207 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-06 21:30:27,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:30:27,262 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:27,262 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2019-11-06 21:30:27,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101526806] [2019-11-06 21:30:27,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:30:27,273 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:27,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:30:27,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:30:27,288 INFO L87 Difference]: Start difference. First operand 743 states. Second operand 2 states. [2019-11-06 21:30:27,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:27,372 INFO L93 Difference]: Finished difference Result 626 states and 1002 transitions. [2019-11-06 21:30:27,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:30:27,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 138 [2019-11-06 21:30:27,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:27,401 INFO L225 Difference]: With dead ends: 626 [2019-11-06 21:30:27,402 INFO L226 Difference]: Without dead ends: 589 [2019-11-06 21:30:27,409 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:30:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-06 21:30:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-11-06 21:30:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-06 21:30:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 947 transitions. [2019-11-06 21:30:27,532 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 947 transitions. Word has length 138 [2019-11-06 21:30:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:27,535 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 947 transitions. [2019-11-06 21:30:27,535 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:30:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 947 transitions. [2019-11-06 21:30:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-06 21:30:27,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:27,543 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:27,756 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:27,756 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:27,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:27,757 INFO L82 PathProgramCache]: Analyzing trace with hash 296066837, now seen corresponding path program 1 times [2019-11-06 21:30:27,757 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:27,757 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616525866] [2019-11-06 21:30:27,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,060 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:30:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,418 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:30:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,615 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:30:29,947 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616525866] [2019-11-06 21:30:29,947 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092535717] [2019-11-06 21:30:29,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:30,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 3210 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:30:30,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:30:30,746 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:30,747 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:30:30,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298503800] [2019-11-06 21:30:30,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:30:30,749 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:30,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:30:30,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:30:30,749 INFO L87 Difference]: Start difference. First operand 589 states and 947 transitions. Second operand 4 states. [2019-11-06 21:30:30,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:30,907 INFO L93 Difference]: Finished difference Result 1150 states and 1867 transitions. [2019-11-06 21:30:30,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:30:30,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-11-06 21:30:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:30,917 INFO L225 Difference]: With dead ends: 1150 [2019-11-06 21:30:30,917 INFO L226 Difference]: Without dead ends: 589 [2019-11-06 21:30:30,926 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:30:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-06 21:30:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-11-06 21:30:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-06 21:30:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 946 transitions. [2019-11-06 21:30:30,965 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 946 transitions. Word has length 140 [2019-11-06 21:30:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:30,965 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 946 transitions. [2019-11-06 21:30:30,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:30:30,966 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 946 transitions. [2019-11-06 21:30:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-06 21:30:30,970 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:30,971 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:31,177 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:31,178 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:31,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:31,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1619685945, now seen corresponding path program 1 times [2019-11-06 21:30:31,179 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:31,180 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134005977] [2019-11-06 21:30:31,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,323 WARN L191 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:30:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,660 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:30:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,853 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:30:33,241 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134005977] [2019-11-06 21:30:33,241 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286547117] [2019-11-06 21:30:33,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:33,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 3212 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:30:33,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:30:33,975 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:33,975 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:30:33,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44510627] [2019-11-06 21:30:33,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:30:33,977 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:33,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:30:33,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:30:33,979 INFO L87 Difference]: Start difference. First operand 589 states and 946 transitions. Second operand 4 states. [2019-11-06 21:30:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:34,091 INFO L93 Difference]: Finished difference Result 1150 states and 1865 transitions. [2019-11-06 21:30:34,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:30:34,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2019-11-06 21:30:34,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:34,097 INFO L225 Difference]: With dead ends: 1150 [2019-11-06 21:30:34,097 INFO L226 Difference]: Without dead ends: 589 [2019-11-06 21:30:34,102 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:30:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-11-06 21:30:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2019-11-06 21:30:34,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-06 21:30:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 945 transitions. [2019-11-06 21:30:34,145 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 945 transitions. Word has length 142 [2019-11-06 21:30:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:34,149 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 945 transitions. [2019-11-06 21:30:34,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:30:34,150 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 945 transitions. [2019-11-06 21:30:34,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-06 21:30:34,155 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:34,155 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:34,362 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:34,362 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:34,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:34,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1401716195, now seen corresponding path program 1 times [2019-11-06 21:30:34,363 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:34,363 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751921181] [2019-11-06 21:30:34,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:35,613 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:30:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:35,907 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:30:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,088 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:30:36,393 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751921181] [2019-11-06 21:30:36,393 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746943746] [2019-11-06 21:30:36,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:37,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:30:37,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:30:37,229 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:37,229 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:30:37,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122927562] [2019-11-06 21:30:37,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:30:37,230 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:37,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:30:37,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:30:37,231 INFO L87 Difference]: Start difference. First operand 589 states and 945 transitions. Second operand 4 states. [2019-11-06 21:30:37,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:37,324 INFO L93 Difference]: Finished difference Result 1157 states and 1872 transitions. [2019-11-06 21:30:37,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:30:37,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2019-11-06 21:30:37,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:37,330 INFO L225 Difference]: With dead ends: 1157 [2019-11-06 21:30:37,330 INFO L226 Difference]: Without dead ends: 598 [2019-11-06 21:30:37,333 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:30:37,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-06 21:30:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-11-06 21:30:37,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-11-06 21:30:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 957 transitions. [2019-11-06 21:30:37,357 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 957 transitions. Word has length 144 [2019-11-06 21:30:37,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:37,358 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 957 transitions. [2019-11-06 21:30:37,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:30:37,358 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 957 transitions. [2019-11-06 21:30:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-06 21:30:37,362 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:37,362 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:37,569 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:37,570 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:37,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:37,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1990322423, now seen corresponding path program 1 times [2019-11-06 21:30:37,571 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:37,571 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732205814] [2019-11-06 21:30:37,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:38,876 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:30:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,238 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:30:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,423 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:30:39,751 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732205814] [2019-11-06 21:30:39,752 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544413033] [2019-11-06 21:30:39,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:40,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 3215 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:30:40,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:30:40,462 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:40,462 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:30:40,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685961797] [2019-11-06 21:30:40,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:30:40,463 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:40,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:30:40,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:30:40,464 INFO L87 Difference]: Start difference. First operand 598 states and 957 transitions. Second operand 4 states. [2019-11-06 21:30:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:40,551 INFO L93 Difference]: Finished difference Result 1159 states and 1873 transitions. [2019-11-06 21:30:40,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:30:40,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-11-06 21:30:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:40,557 INFO L225 Difference]: With dead ends: 1159 [2019-11-06 21:30:40,557 INFO L226 Difference]: Without dead ends: 598 [2019-11-06 21:30:40,560 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:30:40,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-06 21:30:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-11-06 21:30:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-11-06 21:30:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 956 transitions. [2019-11-06 21:30:40,592 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 956 transitions. Word has length 145 [2019-11-06 21:30:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:40,593 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 956 transitions. [2019-11-06 21:30:40,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:30:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 956 transitions. [2019-11-06 21:30:40,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-06 21:30:40,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:40,601 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:40,819 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:40,819 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:40,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:40,820 INFO L82 PathProgramCache]: Analyzing trace with hash 769578593, now seen corresponding path program 1 times [2019-11-06 21:30:40,820 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:40,821 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544665350] [2019-11-06 21:30:40,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,156 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:30:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,438 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:30:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,632 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:30:43,067 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544665350] [2019-11-06 21:30:43,067 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337955605] [2019-11-06 21:30:43,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:43,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 3216 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:30:43,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:30:44,046 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:44,046 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:30:44,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530678949] [2019-11-06 21:30:44,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:30:44,048 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:44,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:30:44,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:30:44,049 INFO L87 Difference]: Start difference. First operand 598 states and 956 transitions. Second operand 4 states. [2019-11-06 21:30:44,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:44,144 INFO L93 Difference]: Finished difference Result 1159 states and 1872 transitions. [2019-11-06 21:30:44,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:30:44,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-11-06 21:30:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:44,150 INFO L225 Difference]: With dead ends: 1159 [2019-11-06 21:30:44,150 INFO L226 Difference]: Without dead ends: 598 [2019-11-06 21:30:44,154 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:30:44,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2019-11-06 21:30:44,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2019-11-06 21:30:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-11-06 21:30:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 955 transitions. [2019-11-06 21:30:44,182 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 955 transitions. Word has length 146 [2019-11-06 21:30:44,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:44,183 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 955 transitions. [2019-11-06 21:30:44,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:30:44,183 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 955 transitions. [2019-11-06 21:30:44,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 21:30:44,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:44,187 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:44,397 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:44,397 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:44,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:44,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1713500357, now seen corresponding path program 1 times [2019-11-06 21:30:44,398 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:44,398 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135560350] [2019-11-06 21:30:44,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:45,680 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:30:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,016 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:30:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,246 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:30:46,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135560350] [2019-11-06 21:30:46,694 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867334965] [2019-11-06 21:30:46,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:47,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 3217 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:30:47,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:30:47,524 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:47,524 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2019-11-06 21:30:47,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336033192] [2019-11-06 21:30:47,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:30:47,525 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:47,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:30:47,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2019-11-06 21:30:47,526 INFO L87 Difference]: Start difference. First operand 598 states and 955 transitions. Second operand 7 states. [2019-11-06 21:30:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:47,730 INFO L93 Difference]: Finished difference Result 1166 states and 1881 transitions. [2019-11-06 21:30:47,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:30:47,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2019-11-06 21:30:47,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:47,737 INFO L225 Difference]: With dead ends: 1166 [2019-11-06 21:30:47,737 INFO L226 Difference]: Without dead ends: 609 [2019-11-06 21:30:47,741 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:30:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-11-06 21:30:47,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 605. [2019-11-06 21:30:47,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-11-06 21:30:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 965 transitions. [2019-11-06 21:30:47,771 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 965 transitions. Word has length 147 [2019-11-06 21:30:47,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:47,772 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 965 transitions. [2019-11-06 21:30:47,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:30:47,772 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 965 transitions. [2019-11-06 21:30:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 21:30:47,776 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:47,777 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:47,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:47,993 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:47,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:47,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1757785468, now seen corresponding path program 1 times [2019-11-06 21:30:47,994 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:47,994 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341446177] [2019-11-06 21:30:47,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,110 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:30:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,471 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:30:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,659 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:30:49,942 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341446177] [2019-11-06 21:30:49,942 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069919564] [2019-11-06 21:30:49,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:50,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 3216 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:30:50,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:30:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:30:50,677 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:30:50,678 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-06 21:30:50,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844034593] [2019-11-06 21:30:50,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:30:50,679 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:30:50,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:30:50,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:30:50,679 INFO L87 Difference]: Start difference. First operand 605 states and 965 transitions. Second operand 4 states. [2019-11-06 21:30:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:30:50,862 INFO L93 Difference]: Finished difference Result 1171 states and 1892 transitions. [2019-11-06 21:30:50,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:30:50,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-11-06 21:30:50,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:30:50,872 INFO L225 Difference]: With dead ends: 1171 [2019-11-06 21:30:50,872 INFO L226 Difference]: Without dead ends: 605 [2019-11-06 21:30:50,877 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:30:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-11-06 21:30:50,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2019-11-06 21:30:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-11-06 21:30:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 960 transitions. [2019-11-06 21:30:50,916 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 960 transitions. Word has length 147 [2019-11-06 21:30:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:30:50,916 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 960 transitions. [2019-11-06 21:30:50,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:30:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 960 transitions. [2019-11-06 21:30:50,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-06 21:30:50,924 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:30:50,927 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:30:51,139 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:51,139 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:30:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:30:51,140 INFO L82 PathProgramCache]: Analyzing trace with hash -427728476, now seen corresponding path program 1 times [2019-11-06 21:30:51,140 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:30:51,140 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539239543] [2019-11-06 21:30:51,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:30:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,386 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:30:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,743 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-11-06 21:30:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,919 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:30:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:30:53,189 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539239543] [2019-11-06 21:30:53,189 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892987056] [2019-11-06 21:30:53,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:30:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:30:53,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 3218 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:30:53,864 INFO L279 TraceCheckSpWp]: Computing forward predicates...