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_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 12:28:55,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 12:28:55,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 12:28:55,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 12:28:55,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 12:28:55,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 12:28:55,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 12:28:55,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 12:28:55,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 12:28:55,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 12:28:55,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 12:28:55,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 12:28:55,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 12:28:55,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 12:28:55,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 12:28:55,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 12:28:55,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 12:28:55,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 12:28:55,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 12:28:55,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 12:28:55,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 12:28:55,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 12:28:55,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 12:28:55,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 12:28:55,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 12:28:55,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 12:28:55,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 12:28:55,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 12:28:55,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 12:28:55,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 12:28:55,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 12:28:55,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 12:28:55,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 12:28:55,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 12:28:55,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 12:28:55,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 12:28:55,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 12:28:55,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 12:28:55,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 12:28:55,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 12:28:55,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 12:28:55,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-02 12:28:55,268 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 12:28:55,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 12:28:55,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 12:28:55,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 12:28:55,270 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 12:28:55,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 12:28:55,270 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 12:28:55,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 12:28:55,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 12:28:55,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 12:28:55,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 12:28:55,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 12:28:55,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 12:28:55,271 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 12:28:55,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 12:28:55,272 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 12:28:55,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 12:28:55,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 12:28:55,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 12:28:55,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 12:28:55,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 12:28:55,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 12:28:55,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 12:28:55,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 12:28:55,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 12:28:55,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 12:28:55,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 12:28:55,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 12:28:55,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 12:28:55,314 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 12:28:55,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 12:28:55,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 12:28:55,332 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 12:28:55,332 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 12:28:55,333 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-10-02 12:28:55,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7b8d692/89050e236a444242926119bfb751606b/FLAGb1d4c709c [2019-10-02 12:28:56,131 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 12:28:56,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-10-02 12:28:56,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7b8d692/89050e236a444242926119bfb751606b/FLAGb1d4c709c [2019-10-02 12:28:56,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d7b8d692/89050e236a444242926119bfb751606b [2019-10-02 12:28:56,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 12:28:56,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 12:28:56,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 12:28:56,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 12:28:56,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 12:28:56,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 12:28:56" (1/1) ... [2019-10-02 12:28:56,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc976e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 12:28:56, skipping insertion in model container [2019-10-02 12:28:56,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 12:28:56" (1/1) ... [2019-10-02 12:28:56,302 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 12:28:56,385 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 12:28:57,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 12:28:57,201 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 12:28:57,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 12:28:57,423 INFO L192 MainTranslator]: Completed translation [2019-10-02 12:28:57,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 12:28:57 WrapperNode [2019-10-02 12:28:57,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 12:28:57,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 12:28:57,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 12:28:57,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 12:28:57,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 12:28:57" (1/1) ... [2019-10-02 12:28:57,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 12:28:57" (1/1) ... [2019-10-02 12:28:57,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 12:28:57" (1/1) ... [2019-10-02 12:28:57,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 12:28:57" (1/1) ... [2019-10-02 12:28:57,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 12:28:57" (1/1) ... [2019-10-02 12:28:57,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 12:28:57" (1/1) ... [2019-10-02 12:28:57,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 12:28:57" (1/1) ... [2019-10-02 12:28:57,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 12:28:57,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 12:28:57,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 12:28:57,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 12:28:57,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 12:28:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 12:28:57,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 12:28:57,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 12:28:57,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-02 12:28:57,689 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-02 12:28:57,689 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-02 12:28:57,689 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-02 12:28:57,689 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-02 12:28:57,689 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-02 12:28:57,690 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-02 12:28:57,690 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-02 12:28:57,690 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-02 12:28:57,690 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-02 12:28:57,690 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-02 12:28:57,691 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-02 12:28:57,691 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-02 12:28:57,691 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-02 12:28:57,691 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-02 12:28:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-02 12:28:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-02 12:28:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 12:28:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-02 12:28:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-02 12:28:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-02 12:28:57,693 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-02 12:28:57,693 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-02 12:28:57,693 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-02 12:28:57,693 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-02 12:28:57,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-02 12:28:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-02 12:28:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-02 12:28:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-02 12:28:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-02 12:28:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-02 12:28:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-02 12:28:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-02 12:28:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-02 12:28:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-02 12:28:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-02 12:28:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-02 12:28:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-02 12:28:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-02 12:28:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-02 12:28:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-02 12:28:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-02 12:28:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-02 12:28:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-02 12:28:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-02 12:28:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-02 12:28:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-02 12:28:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-02 12:28:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-02 12:28:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-02 12:28:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-02 12:28:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-02 12:28:57,698 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-02 12:28:57,698 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-02 12:28:57,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-02 12:28:57,698 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-02 12:28:57,698 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-02 12:28:57,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-02 12:28:57,699 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-02 12:28:57,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-02 12:28:57,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-02 12:28:57,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-02 12:28:57,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-02 12:28:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-02 12:28:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-02 12:28:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-02 12:28:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-02 12:28:57,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-02 12:28:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-02 12:28:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-02 12:28:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-02 12:28:57,701 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-02 12:28:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 12:28:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 12:28:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 12:28:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-02 12:28:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-02 12:28:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-02 12:28:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-02 12:28:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-02 12:28:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-02 12:28:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-02 12:28:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-02 12:28:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-02 12:28:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-02 12:28:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-02 12:28:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-02 12:28:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-02 12:28:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-02 12:28:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-02 12:28:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-02 12:28:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-02 12:28:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-02 12:28:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-02 12:28:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-02 12:28:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-02 12:28:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-02 12:28:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-02 12:28:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-02 12:28:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-02 12:28:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-02 12:28:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-02 12:28:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 12:28:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-02 12:28:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-02 12:28:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-02 12:28:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-02 12:28:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-02 12:28:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-02 12:28:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-02 12:28:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-02 12:28:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-02 12:28:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-02 12:28:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-02 12:28:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-02 12:28:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-02 12:28:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-02 12:28:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-02 12:28:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-02 12:28:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-02 12:28:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-02 12:28:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-02 12:28:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-02 12:28:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-02 12:28:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-02 12:28:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-02 12:28:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-02 12:28:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-02 12:28:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-02 12:28:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-02 12:28:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-02 12:28:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-02 12:28:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-02 12:28:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-02 12:28:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-02 12:28:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-02 12:28:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-02 12:28:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 12:28:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-02 12:28:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-02 12:28:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-02 12:28:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-02 12:28:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 12:28:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 12:28:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-02 12:28:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 12:28:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 12:28:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 12:28:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 12:28:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-02 12:28:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 12:28:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-02 12:28:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-02 12:28:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 12:28:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-02 12:28:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-02 12:28:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-02 12:28:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-02 12:28:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 12:28:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-02 12:28:57,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 12:29:00,043 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 12:29:00,043 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-02 12:29:00,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:29:00 BoogieIcfgContainer [2019-10-02 12:29:00,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 12:29:00,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 12:29:00,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 12:29:00,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 12:29:00,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 12:28:56" (1/3) ... [2019-10-02 12:29:00,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e183b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:29:00, skipping insertion in model container [2019-10-02 12:29:00,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 12:28:57" (2/3) ... [2019-10-02 12:29:00,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e183b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:29:00, skipping insertion in model container [2019-10-02 12:29:00,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:29:00" (3/3) ... [2019-10-02 12:29:00,055 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2019-10-02 12:29:00,068 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 12:29:00,084 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 12:29:00,105 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 12:29:00,160 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 12:29:00,161 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 12:29:00,161 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 12:29:00,161 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 12:29:00,162 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 12:29:00,162 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 12:29:00,162 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 12:29:00,162 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 12:29:00,162 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 12:29:00,212 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states. [2019-10-02 12:29:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-02 12:29:00,246 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:00,248 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:00,252 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:00,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:00,259 INFO L82 PathProgramCache]: Analyzing trace with hash -713058684, now seen corresponding path program 1 times [2019-10-02 12:29:00,261 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:00,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:00,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:00,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:00,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 12:29:01,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:29:01,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-02 12:29:01,071 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 12:29:01,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 12:29:01,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-02 12:29:01,089 INFO L87 Difference]: Start difference. First operand 793 states. Second operand 7 states. [2019-10-02 12:29:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:01,362 INFO L93 Difference]: Finished difference Result 1265 states and 2048 transitions. [2019-10-02 12:29:01,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 12:29:01,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2019-10-02 12:29:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:01,401 INFO L225 Difference]: With dead ends: 1265 [2019-10-02 12:29:01,401 INFO L226 Difference]: Without dead ends: 641 [2019-10-02 12:29:01,413 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-02 12:29:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2019-10-02 12:29:01,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 639. [2019-10-02 12:29:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-10-02 12:29:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1019 transitions. [2019-10-02 12:29:01,559 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1019 transitions. Word has length 132 [2019-10-02 12:29:01,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:01,560 INFO L475 AbstractCegarLoop]: Abstraction has 639 states and 1019 transitions. [2019-10-02 12:29:01,560 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 12:29:01,560 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1019 transitions. [2019-10-02 12:29:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-02 12:29:01,566 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:01,567 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:01,567 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:01,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2033776308, now seen corresponding path program 1 times [2019-10-02 12:29:01,568 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:01,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:01,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:01,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:01,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 12:29:01,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:29:01,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 12:29:01,765 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 12:29:01,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 12:29:01,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 12:29:01,766 INFO L87 Difference]: Start difference. First operand 639 states and 1019 transitions. Second operand 4 states. [2019-10-02 12:29:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:01,838 INFO L93 Difference]: Finished difference Result 1244 states and 2003 transitions. [2019-10-02 12:29:01,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 12:29:01,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2019-10-02 12:29:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:01,845 INFO L225 Difference]: With dead ends: 1244 [2019-10-02 12:29:01,846 INFO L226 Difference]: Without dead ends: 621 [2019-10-02 12:29:01,850 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 12:29:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-02 12:29:01,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-10-02 12:29:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-02 12:29:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 986 transitions. [2019-10-02 12:29:01,902 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 986 transitions. Word has length 133 [2019-10-02 12:29:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:01,904 INFO L475 AbstractCegarLoop]: Abstraction has 621 states and 986 transitions. [2019-10-02 12:29:01,905 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 12:29:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 986 transitions. [2019-10-02 12:29:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-02 12:29:01,915 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:01,915 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:01,917 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:01,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:01,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1652657134, now seen corresponding path program 1 times [2019-10-02 12:29:01,918 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:01,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:01,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:01,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:01,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 12:29:02,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:29:02,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-02 12:29:02,247 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 12:29:02,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 12:29:02,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-02 12:29:02,248 INFO L87 Difference]: Start difference. First operand 621 states and 986 transitions. Second operand 7 states. [2019-10-02 12:29:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:02,363 INFO L93 Difference]: Finished difference Result 1213 states and 1945 transitions. [2019-10-02 12:29:02,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 12:29:02,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-10-02 12:29:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:02,370 INFO L225 Difference]: With dead ends: 1213 [2019-10-02 12:29:02,370 INFO L226 Difference]: Without dead ends: 615 [2019-10-02 12:29:02,374 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-02 12:29:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-02 12:29:02,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-02 12:29:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-02 12:29:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 973 transitions. [2019-10-02 12:29:02,421 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 973 transitions. Word has length 133 [2019-10-02 12:29:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:02,423 INFO L475 AbstractCegarLoop]: Abstraction has 615 states and 973 transitions. [2019-10-02 12:29:02,423 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 12:29:02,423 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 973 transitions. [2019-10-02 12:29:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-02 12:29:02,429 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:02,429 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:02,430 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:02,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1402803232, now seen corresponding path program 1 times [2019-10-02 12:29:02,430 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:02,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:02,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:02,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:02,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 12:29:02,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:29:02,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-02 12:29:02,639 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 12:29:02,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 12:29:02,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-02 12:29:02,640 INFO L87 Difference]: Start difference. First operand 615 states and 973 transitions. Second operand 7 states. [2019-10-02 12:29:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:02,730 INFO L93 Difference]: Finished difference Result 1201 states and 1919 transitions. [2019-10-02 12:29:02,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 12:29:02,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-10-02 12:29:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:02,736 INFO L225 Difference]: With dead ends: 1201 [2019-10-02 12:29:02,737 INFO L226 Difference]: Without dead ends: 609 [2019-10-02 12:29:02,742 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-02 12:29:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-10-02 12:29:02,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2019-10-02 12:29:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2019-10-02 12:29:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 960 transitions. [2019-10-02 12:29:02,768 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 960 transitions. Word has length 134 [2019-10-02 12:29:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:02,769 INFO L475 AbstractCegarLoop]: Abstraction has 609 states and 960 transitions. [2019-10-02 12:29:02,769 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 12:29:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 960 transitions. [2019-10-02 12:29:02,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-02 12:29:02,773 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:02,773 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:02,773 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:02,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:02,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1674666634, now seen corresponding path program 1 times [2019-10-02 12:29:02,774 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:02,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:02,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:02,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:02,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 12:29:02,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:29:02,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-02 12:29:02,949 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 12:29:02,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 12:29:02,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-02 12:29:02,950 INFO L87 Difference]: Start difference. First operand 609 states and 960 transitions. Second operand 7 states. [2019-10-02 12:29:03,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:03,081 INFO L93 Difference]: Finished difference Result 1189 states and 1893 transitions. [2019-10-02 12:29:03,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 12:29:03,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-02 12:29:03,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:03,088 INFO L225 Difference]: With dead ends: 1189 [2019-10-02 12:29:03,088 INFO L226 Difference]: Without dead ends: 603 [2019-10-02 12:29:03,093 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-02 12:29:03,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-02 12:29:03,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-02 12:29:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-02 12:29:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 947 transitions. [2019-10-02 12:29:03,196 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 947 transitions. Word has length 135 [2019-10-02 12:29:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:03,197 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 947 transitions. [2019-10-02 12:29:03,197 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 12:29:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 947 transitions. [2019-10-02 12:29:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-02 12:29:03,204 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:03,204 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:03,204 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:03,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:03,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1533378921, now seen corresponding path program 1 times [2019-10-02 12:29:03,205 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:03,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:03,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:03,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:03,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 12:29:03,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:29:03,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-02 12:29:03,400 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 12:29:03,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 12:29:03,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-02 12:29:03,401 INFO L87 Difference]: Start difference. First operand 603 states and 947 transitions. Second operand 7 states. [2019-10-02 12:29:03,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:03,492 INFO L93 Difference]: Finished difference Result 1177 states and 1867 transitions. [2019-10-02 12:29:03,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 12:29:03,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2019-10-02 12:29:03,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:03,506 INFO L225 Difference]: With dead ends: 1177 [2019-10-02 12:29:03,506 INFO L226 Difference]: Without dead ends: 603 [2019-10-02 12:29:03,512 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-02 12:29:03,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-02 12:29:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-02 12:29:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-02 12:29:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 946 transitions. [2019-10-02 12:29:03,549 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 946 transitions. Word has length 135 [2019-10-02 12:29:03,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:03,550 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 946 transitions. [2019-10-02 12:29:03,550 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 12:29:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 946 transitions. [2019-10-02 12:29:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-02 12:29:03,554 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:03,554 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:03,555 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:03,558 INFO L82 PathProgramCache]: Analyzing trace with hash 939897276, now seen corresponding path program 1 times [2019-10-02 12:29:03,558 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:03,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:03,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:03,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:03,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 12:29:03,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:29:03,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 12:29:03,712 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 12:29:03,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 12:29:03,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 12:29:03,713 INFO L87 Difference]: Start difference. First operand 603 states and 946 transitions. Second operand 5 states. [2019-10-02 12:29:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:03,792 INFO L93 Difference]: Finished difference Result 1176 states and 1864 transitions. [2019-10-02 12:29:03,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 12:29:03,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2019-10-02 12:29:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:03,798 INFO L225 Difference]: With dead ends: 1176 [2019-10-02 12:29:03,798 INFO L226 Difference]: Without dead ends: 603 [2019-10-02 12:29:03,802 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 12:29:03,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-02 12:29:03,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-02 12:29:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-02 12:29:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 945 transitions. [2019-10-02 12:29:03,829 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 945 transitions. Word has length 136 [2019-10-02 12:29:03,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:03,829 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 945 transitions. [2019-10-02 12:29:03,829 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 12:29:03,830 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 945 transitions. [2019-10-02 12:29:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-02 12:29:03,837 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:03,837 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:03,838 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:03,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1962554060, now seen corresponding path program 1 times [2019-10-02 12:29:03,838 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:03,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:03,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:03,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:03,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 12:29:04,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:29:04,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 12:29:04,062 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 12:29:04,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 12:29:04,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 12:29:04,063 INFO L87 Difference]: Start difference. First operand 603 states and 945 transitions. Second operand 5 states. [2019-10-02 12:29:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:04,257 INFO L93 Difference]: Finished difference Result 1176 states and 1862 transitions. [2019-10-02 12:29:04,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 12:29:04,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2019-10-02 12:29:04,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:04,265 INFO L225 Difference]: With dead ends: 1176 [2019-10-02 12:29:04,265 INFO L226 Difference]: Without dead ends: 603 [2019-10-02 12:29:04,270 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 12:29:04,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-02 12:29:04,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-02 12:29:04,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-02 12:29:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 944 transitions. [2019-10-02 12:29:04,309 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 944 transitions. Word has length 137 [2019-10-02 12:29:04,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:04,310 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 944 transitions. [2019-10-02 12:29:04,310 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 12:29:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 944 transitions. [2019-10-02 12:29:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-02 12:29:04,316 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:04,317 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:04,317 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:04,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:04,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1062439167, now seen corresponding path program 1 times [2019-10-02 12:29:04,318 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:04,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:04,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:04,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:04,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 12:29:04,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:29:04,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 12:29:04,520 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 12:29:04,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 12:29:04,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 12:29:04,521 INFO L87 Difference]: Start difference. First operand 603 states and 944 transitions. Second operand 5 states. [2019-10-02 12:29:04,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:04,594 INFO L93 Difference]: Finished difference Result 1176 states and 1860 transitions. [2019-10-02 12:29:04,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 12:29:04,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-10-02 12:29:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:04,602 INFO L225 Difference]: With dead ends: 1176 [2019-10-02 12:29:04,603 INFO L226 Difference]: Without dead ends: 603 [2019-10-02 12:29:04,606 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 12:29:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-02 12:29:04,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-02 12:29:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-02 12:29:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 943 transitions. [2019-10-02 12:29:04,645 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 943 transitions. Word has length 138 [2019-10-02 12:29:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:04,645 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 943 transitions. [2019-10-02 12:29:04,645 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 12:29:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 943 transitions. [2019-10-02 12:29:04,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-02 12:29:04,650 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:04,650 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:04,651 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:04,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:04,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1753111833, now seen corresponding path program 1 times [2019-10-02 12:29:04,651 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:04,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:04,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:04,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:04,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 12:29:04,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:29:04,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 12:29:04,805 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 12:29:04,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 12:29:04,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 12:29:04,806 INFO L87 Difference]: Start difference. First operand 603 states and 943 transitions. Second operand 5 states. [2019-10-02 12:29:04,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:04,869 INFO L93 Difference]: Finished difference Result 1176 states and 1858 transitions. [2019-10-02 12:29:04,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 12:29:04,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-10-02 12:29:04,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:04,874 INFO L225 Difference]: With dead ends: 1176 [2019-10-02 12:29:04,875 INFO L226 Difference]: Without dead ends: 603 [2019-10-02 12:29:04,878 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 12:29:04,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-02 12:29:04,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-02 12:29:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-02 12:29:04,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 942 transitions. [2019-10-02 12:29:04,901 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 942 transitions. Word has length 139 [2019-10-02 12:29:04,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:04,901 INFO L475 AbstractCegarLoop]: Abstraction has 603 states and 942 transitions. [2019-10-02 12:29:04,902 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 12:29:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 942 transitions. [2019-10-02 12:29:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-02 12:29:04,906 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:04,906 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:04,907 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:04,907 INFO L82 PathProgramCache]: Analyzing trace with hash -477327290, now seen corresponding path program 1 times [2019-10-02 12:29:04,907 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:04,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:04,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:04,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:04,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-02 12:29:05,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 12:29:05,127 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 12:29:05,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:05,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-02 12:29:05,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 12:29:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-02 12:29:05,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 12:29:05,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2019-10-02 12:29:05,901 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 12:29:05,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 12:29:05,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-02 12:29:05,903 INFO L87 Difference]: Start difference. First operand 603 states and 942 transitions. Second operand 12 states. [2019-10-02 12:29:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:12,159 INFO L93 Difference]: Finished difference Result 3381 states and 5490 transitions. [2019-10-02 12:29:12,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-02 12:29:12,160 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 140 [2019-10-02 12:29:12,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:12,184 INFO L225 Difference]: With dead ends: 3381 [2019-10-02 12:29:12,184 INFO L226 Difference]: Without dead ends: 2812 [2019-10-02 12:29:12,191 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2019-10-02 12:29:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2019-10-02 12:29:12,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 2678. [2019-10-02 12:29:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2678 states. [2019-10-02 12:29:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 4288 transitions. [2019-10-02 12:29:12,365 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 4288 transitions. Word has length 140 [2019-10-02 12:29:12,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:12,368 INFO L475 AbstractCegarLoop]: Abstraction has 2678 states and 4288 transitions. [2019-10-02 12:29:12,368 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 12:29:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 4288 transitions. [2019-10-02 12:29:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-02 12:29:12,378 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:12,378 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:12,378 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:12,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:12,379 INFO L82 PathProgramCache]: Analyzing trace with hash -582772405, now seen corresponding path program 1 times [2019-10-02 12:29:12,379 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:12,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:12,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:12,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:12,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-02 12:29:12,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 12:29:12,616 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 12:29:12,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:13,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 12:29:13,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 12:29:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 12:29:13,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 12:29:13,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-10-02 12:29:13,218 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 12:29:13,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 12:29:13,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-02 12:29:13,219 INFO L87 Difference]: Start difference. First operand 2678 states and 4288 transitions. Second operand 8 states. [2019-10-02 12:29:18,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:18,881 INFO L93 Difference]: Finished difference Result 8132 states and 13522 transitions. [2019-10-02 12:29:18,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-02 12:29:18,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 144 [2019-10-02 12:29:18,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:18,932 INFO L225 Difference]: With dead ends: 8132 [2019-10-02 12:29:18,932 INFO L226 Difference]: Without dead ends: 5488 [2019-10-02 12:29:18,956 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2019-10-02 12:29:18,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2019-10-02 12:29:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 5180. [2019-10-02 12:29:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5180 states. [2019-10-02 12:29:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 8329 transitions. [2019-10-02 12:29:19,290 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 8329 transitions. Word has length 144 [2019-10-02 12:29:19,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:19,291 INFO L475 AbstractCegarLoop]: Abstraction has 5180 states and 8329 transitions. [2019-10-02 12:29:19,291 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 12:29:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 8329 transitions. [2019-10-02 12:29:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-02 12:29:19,302 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:19,303 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:19,303 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:19,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1815707444, now seen corresponding path program 1 times [2019-10-02 12:29:19,304 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:19,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:19,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:19,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:19,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-02 12:29:19,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 12:29:19,590 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 12:29:19,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:20,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-02 12:29:20,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 12:29:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-02 12:29:20,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 12:29:20,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-02 12:29:20,266 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-02 12:29:20,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-02 12:29:20,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-02 12:29:20,268 INFO L87 Difference]: Start difference. First operand 5180 states and 8329 transitions. Second operand 9 states. [2019-10-02 12:29:25,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:25,088 INFO L93 Difference]: Finished difference Result 18538 states and 30259 transitions. [2019-10-02 12:29:25,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-02 12:29:25,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2019-10-02 12:29:25,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:25,231 INFO L225 Difference]: With dead ends: 18538 [2019-10-02 12:29:25,231 INFO L226 Difference]: Without dead ends: 13392 [2019-10-02 12:29:25,281 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2019-10-02 12:29:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13392 states. [2019-10-02 12:29:25,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13392 to 8968. [2019-10-02 12:29:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8968 states. [2019-10-02 12:29:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8968 states to 8968 states and 14246 transitions. [2019-10-02 12:29:25,998 INFO L78 Accepts]: Start accepts. Automaton has 8968 states and 14246 transitions. Word has length 142 [2019-10-02 12:29:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:25,999 INFO L475 AbstractCegarLoop]: Abstraction has 8968 states and 14246 transitions. [2019-10-02 12:29:25,999 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-02 12:29:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 8968 states and 14246 transitions. [2019-10-02 12:29:26,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-02 12:29:26,004 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:26,004 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:26,004 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:26,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:26,005 INFO L82 PathProgramCache]: Analyzing trace with hash 644844244, now seen corresponding path program 1 times [2019-10-02 12:29:26,005 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:26,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:26,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:26,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:26,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-02 12:29:26,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 12:29:26,170 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 12:29:26,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:26,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 3087 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 12:29:26,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 12:29:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 12:29:26,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 12:29:26,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2019-10-02 12:29:26,872 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 12:29:26,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 12:29:26,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 12:29:26,873 INFO L87 Difference]: Start difference. First operand 8968 states and 14246 transitions. Second operand 6 states. [2019-10-02 12:29:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:27,367 INFO L93 Difference]: Finished difference Result 17619 states and 28313 transitions. [2019-10-02 12:29:27,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 12:29:27,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2019-10-02 12:29:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:27,441 INFO L225 Difference]: With dead ends: 17619 [2019-10-02 12:29:27,442 INFO L226 Difference]: Without dead ends: 8669 [2019-10-02 12:29:27,493 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-02 12:29:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2019-10-02 12:29:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 8597. [2019-10-02 12:29:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8597 states. [2019-10-02 12:29:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8597 states to 8597 states and 13648 transitions. [2019-10-02 12:29:28,670 INFO L78 Accepts]: Start accepts. Automaton has 8597 states and 13648 transitions. Word has length 151 [2019-10-02 12:29:28,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:28,671 INFO L475 AbstractCegarLoop]: Abstraction has 8597 states and 13648 transitions. [2019-10-02 12:29:28,671 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 12:29:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand 8597 states and 13648 transitions. [2019-10-02 12:29:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-02 12:29:28,676 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:28,676 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:28,676 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:28,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:28,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1509824304, now seen corresponding path program 1 times [2019-10-02 12:29:28,677 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:28,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:28,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:28,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:28,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-02 12:29:28,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 12:29:28,870 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 12:29:28,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:29,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 3109 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-02 12:29:29,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 12:29:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-02 12:29:29,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 12:29:29,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2019-10-02 12:29:29,665 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-02 12:29:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-02 12:29:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-02 12:29:29,666 INFO L87 Difference]: Start difference. First operand 8597 states and 13648 transitions. Second operand 13 states. [2019-10-02 12:29:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:38,372 INFO L93 Difference]: Finished difference Result 32820 states and 53878 transitions. [2019-10-02 12:29:38,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-10-02 12:29:38,373 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 159 [2019-10-02 12:29:38,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:38,550 INFO L225 Difference]: With dead ends: 32820 [2019-10-02 12:29:38,550 INFO L226 Difference]: Without dead ends: 24173 [2019-10-02 12:29:38,612 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=1430, Unknown=0, NotChecked=0, Total=1640 [2019-10-02 12:29:38,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24173 states. [2019-10-02 12:29:39,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24173 to 23961. [2019-10-02 12:29:39,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23961 states. [2019-10-02 12:29:40,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23961 states to 23961 states and 38088 transitions. [2019-10-02 12:29:40,048 INFO L78 Accepts]: Start accepts. Automaton has 23961 states and 38088 transitions. Word has length 159 [2019-10-02 12:29:40,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:40,048 INFO L475 AbstractCegarLoop]: Abstraction has 23961 states and 38088 transitions. [2019-10-02 12:29:40,048 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-02 12:29:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 23961 states and 38088 transitions. [2019-10-02 12:29:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-02 12:29:40,053 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:40,054 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:40,054 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:40,054 INFO L82 PathProgramCache]: Analyzing trace with hash -836232321, now seen corresponding path program 1 times [2019-10-02 12:29:40,055 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:40,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:40,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:40,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:40,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-02 12:29:40,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 12:29:40,249 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 12:29:40,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:40,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 3113 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-02 12:29:40,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 12:29:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 12:29:40,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 12:29:40,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2019-10-02 12:29:40,843 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 12:29:40,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 12:29:40,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 12:29:40,845 INFO L87 Difference]: Start difference. First operand 23961 states and 38088 transitions. Second operand 6 states. [2019-10-02 12:29:41,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:41,577 INFO L93 Difference]: Finished difference Result 47667 states and 76746 transitions. [2019-10-02 12:29:41,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 12:29:41,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2019-10-02 12:29:41,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:41,777 INFO L225 Difference]: With dead ends: 47667 [2019-10-02 12:29:41,777 INFO L226 Difference]: Without dead ends: 23641 [2019-10-02 12:29:43,121 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-02 12:29:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23641 states. [2019-10-02 12:29:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23641 to 23493. [2019-10-02 12:29:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23493 states. [2019-10-02 12:29:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23493 states to 23493 states and 37264 transitions. [2019-10-02 12:29:44,296 INFO L78 Accepts]: Start accepts. Automaton has 23493 states and 37264 transitions. Word has length 162 [2019-10-02 12:29:44,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:44,296 INFO L475 AbstractCegarLoop]: Abstraction has 23493 states and 37264 transitions. [2019-10-02 12:29:44,296 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 12:29:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand 23493 states and 37264 transitions. [2019-10-02 12:29:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-02 12:29:44,303 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:44,303 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:44,303 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:44,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:44,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1082235655, now seen corresponding path program 1 times [2019-10-02 12:29:44,304 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:44,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:44,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:44,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:44,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-02 12:29:44,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 12:29:44,472 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 12:29:44,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:45,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 3137 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-02 12:29:45,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 12:29:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-02 12:29:45,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 12:29:45,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2019-10-02 12:29:45,317 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-02 12:29:45,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-02 12:29:45,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-02 12:29:45,320 INFO L87 Difference]: Start difference. First operand 23493 states and 37264 transitions. Second operand 13 states. [2019-10-02 12:29:55,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:29:55,147 INFO L93 Difference]: Finished difference Result 70650 states and 115911 transitions. [2019-10-02 12:29:55,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-10-02 12:29:55,148 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 171 [2019-10-02 12:29:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:29:55,580 INFO L225 Difference]: With dead ends: 70650 [2019-10-02 12:29:55,580 INFO L226 Difference]: Without dead ends: 47143 [2019-10-02 12:29:55,754 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2019-10-02 12:29:55,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47143 states. [2019-10-02 12:29:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47143 to 46795. [2019-10-02 12:29:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46795 states. [2019-10-02 12:29:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46795 states to 46795 states and 75356 transitions. [2019-10-02 12:29:59,016 INFO L78 Accepts]: Start accepts. Automaton has 46795 states and 75356 transitions. Word has length 171 [2019-10-02 12:29:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:29:59,017 INFO L475 AbstractCegarLoop]: Abstraction has 46795 states and 75356 transitions. [2019-10-02 12:29:59,017 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-02 12:29:59,017 INFO L276 IsEmpty]: Start isEmpty. Operand 46795 states and 75356 transitions. [2019-10-02 12:29:59,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-02 12:29:59,023 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:29:59,023 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:29:59,023 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:29:59,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:29:59,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1595732362, now seen corresponding path program 1 times [2019-10-02 12:29:59,024 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:29:59,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:29:59,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:59,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:29:59,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:29:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:29:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-02 12:29:59,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:29:59,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 12:29:59,143 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 12:29:59,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 12:29:59,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 12:29:59,144 INFO L87 Difference]: Start difference. First operand 46795 states and 75356 transitions. Second operand 4 states. [2019-10-02 12:30:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:30:01,077 INFO L93 Difference]: Finished difference Result 93273 states and 152724 transitions. [2019-10-02 12:30:01,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 12:30:01,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2019-10-02 12:30:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:30:01,444 INFO L225 Difference]: With dead ends: 93273 [2019-10-02 12:30:01,444 INFO L226 Difference]: Without dead ends: 46500 [2019-10-02 12:30:01,723 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 12:30:01,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46500 states. [2019-10-02 12:30:05,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46500 to 46348. [2019-10-02 12:30:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46348 states. [2019-10-02 12:30:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46348 states to 46348 states and 74512 transitions. [2019-10-02 12:30:05,756 INFO L78 Accepts]: Start accepts. Automaton has 46348 states and 74512 transitions. Word has length 173 [2019-10-02 12:30:05,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:30:05,757 INFO L475 AbstractCegarLoop]: Abstraction has 46348 states and 74512 transitions. [2019-10-02 12:30:05,757 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 12:30:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 46348 states and 74512 transitions. [2019-10-02 12:30:05,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-02 12:30:05,762 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:30:05,763 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:30:05,763 INFO L418 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:30:05,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:30:05,763 INFO L82 PathProgramCache]: Analyzing trace with hash 673914398, now seen corresponding path program 1 times [2019-10-02 12:30:05,763 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:30:05,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:30:05,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:30:05,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:30:05,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:30:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:30:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-02 12:30:05,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:30:05,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-02 12:30:05,922 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 12:30:05,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 12:30:05,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-02 12:30:05,923 INFO L87 Difference]: Start difference. First operand 46348 states and 74512 transitions. Second operand 7 states. [2019-10-02 12:30:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:30:11,070 INFO L93 Difference]: Finished difference Result 139343 states and 232389 transitions. [2019-10-02 12:30:11,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-02 12:30:11,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2019-10-02 12:30:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:30:11,834 INFO L225 Difference]: With dead ends: 139343 [2019-10-02 12:30:11,834 INFO L226 Difference]: Without dead ends: 93029 [2019-10-02 12:30:12,276 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-02 12:30:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93029 states. [2019-10-02 12:30:15,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93029 to 92617. [2019-10-02 12:30:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92617 states. [2019-10-02 12:30:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92617 states to 92617 states and 152768 transitions. [2019-10-02 12:30:20,001 INFO L78 Accepts]: Start accepts. Automaton has 92617 states and 152768 transitions. Word has length 183 [2019-10-02 12:30:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:30:20,001 INFO L475 AbstractCegarLoop]: Abstraction has 92617 states and 152768 transitions. [2019-10-02 12:30:20,002 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 12:30:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 92617 states and 152768 transitions. [2019-10-02 12:30:20,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-02 12:30:20,009 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:30:20,009 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:30:20,010 INFO L418 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:30:20,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:30:20,010 INFO L82 PathProgramCache]: Analyzing trace with hash -901888141, now seen corresponding path program 1 times [2019-10-02 12:30:20,010 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:30:20,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:30:20,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:30:20,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:30:20,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:30:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:30:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-02 12:30:20,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 12:30:20,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 12:30:20,150 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 12:30:20,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 12:30:20,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 12:30:20,151 INFO L87 Difference]: Start difference. First operand 92617 states and 152768 transitions. Second operand 4 states. [2019-10-02 12:30:23,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:30:23,690 INFO L93 Difference]: Finished difference Result 184241 states and 310909 transitions. [2019-10-02 12:30:23,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 12:30:23,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2019-10-02 12:30:23,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:30:24,237 INFO L225 Difference]: With dead ends: 184241 [2019-10-02 12:30:24,237 INFO L226 Difference]: Without dead ends: 91638 [2019-10-02 12:30:24,656 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 12:30:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91638 states. [2019-10-02 12:30:30,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91638 to 91322. [2019-10-02 12:30:30,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91322 states. [2019-10-02 12:30:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91322 states to 91322 states and 150224 transitions. [2019-10-02 12:30:31,657 INFO L78 Accepts]: Start accepts. Automaton has 91322 states and 150224 transitions. Word has length 185 [2019-10-02 12:30:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:30:31,657 INFO L475 AbstractCegarLoop]: Abstraction has 91322 states and 150224 transitions. [2019-10-02 12:30:31,658 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 12:30:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand 91322 states and 150224 transitions. [2019-10-02 12:30:31,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2019-10-02 12:30:31,683 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:30:31,683 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:30:31,684 INFO L418 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:30:31,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:30:31,684 INFO L82 PathProgramCache]: Analyzing trace with hash -713201473, now seen corresponding path program 1 times [2019-10-02 12:30:31,684 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:30:31,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:30:31,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:30:31,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:30:31,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:30:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:30:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-10-02 12:30:31,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 12:30:31,947 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 12:30:32,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:30:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:30:32,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 3621 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-02 12:30:32,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 12:30:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-02 12:30:32,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 12:30:32,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2019-10-02 12:30:32,681 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-02 12:30:32,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-02 12:30:32,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2019-10-02 12:30:32,681 INFO L87 Difference]: Start difference. First operand 91322 states and 150224 transitions. Second operand 15 states. [2019-10-02 12:31:04,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:31:04,405 INFO L93 Difference]: Finished difference Result 326212 states and 606506 transitions. [2019-10-02 12:31:04,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-10-02 12:31:04,405 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 276 [2019-10-02 12:31:04,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:31:05,985 INFO L225 Difference]: With dead ends: 326212 [2019-10-02 12:31:05,985 INFO L226 Difference]: Without dead ends: 234526 [2019-10-02 12:31:07,352 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=336, Invalid=2634, Unknown=0, NotChecked=0, Total=2970 [2019-10-02 12:31:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234526 states. [2019-10-02 12:31:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234526 to 224319. [2019-10-02 12:31:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224319 states. [2019-10-02 12:31:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224319 states to 224319 states and 376060 transitions. [2019-10-02 12:31:17,823 INFO L78 Accepts]: Start accepts. Automaton has 224319 states and 376060 transitions. Word has length 276 [2019-10-02 12:31:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 12:31:17,824 INFO L475 AbstractCegarLoop]: Abstraction has 224319 states and 376060 transitions. [2019-10-02 12:31:17,824 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-02 12:31:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 224319 states and 376060 transitions. [2019-10-02 12:31:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2019-10-02 12:31:17,848 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 12:31:17,849 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 9, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 12:31:17,849 INFO L418 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 12:31:17,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 12:31:17,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1271682637, now seen corresponding path program 1 times [2019-10-02 12:31:17,849 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 12:31:17,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 12:31:17,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:31:17,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:31:17,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 12:31:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:31:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2019-10-02 12:31:24,104 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 12:31:24,104 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 12:31:24,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 12:31:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 12:31:24,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 4487 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-02 12:31:24,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 12:31:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2019-10-02 12:31:25,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 12:31:25,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 26 [2019-10-02 12:31:25,176 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-02 12:31:25,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-02 12:31:25,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2019-10-02 12:31:25,177 INFO L87 Difference]: Start difference. First operand 224319 states and 376060 transitions. Second operand 26 states. [2019-10-02 12:33:49,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 12:33:49,144 INFO L93 Difference]: Finished difference Result 1037260 states and 2162240 transitions. [2019-10-02 12:33:49,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2019-10-02 12:33:49,146 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 435 [2019-10-02 12:33:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 12:33:56,588 INFO L225 Difference]: With dead ends: 1037260 [2019-10-02 12:33:56,588 INFO L226 Difference]: Without dead ends: 811693 [2019-10-02 12:34:02,104 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5844 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1520, Invalid=16302, Unknown=0, NotChecked=0, Total=17822 [2019-10-02 12:34:02,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811693 states.