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_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 04:16:43,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 04:16:43,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 04:16:43,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 04:16:43,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 04:16:43,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 04:16:43,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 04:16:43,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 04:16:43,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 04:16:43,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 04:16:43,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 04:16:43,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 04:16:43,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 04:16:43,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 04:16:43,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 04:16:43,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 04:16:43,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 04:16:43,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 04:16:43,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 04:16:43,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 04:16:43,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 04:16:43,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 04:16:43,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 04:16:43,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 04:16:43,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 04:16:43,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 04:16:43,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 04:16:43,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 04:16:43,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 04:16:43,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 04:16:43,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 04:16:43,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 04:16:43,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 04:16:43,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 04:16:43,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 04:16:43,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 04:16:43,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 04:16:43,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 04:16:43,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 04:16:43,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 04:16:43,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 04:16:43,658 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 [2019-09-08 04:16:43,673 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 04:16:43,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 04:16:43,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 04:16:43,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 04:16:43,675 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 04:16:43,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 04:16:43,675 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 04:16:43,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 04:16:43,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 04:16:43,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 04:16:43,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 04:16:43,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 04:16:43,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 04:16:43,677 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 04:16:43,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 04:16:43,677 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 04:16:43,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 04:16:43,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 04:16:43,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 04:16:43,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 04:16:43,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 04:16:43,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 04:16:43,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 04:16:43,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 04:16:43,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 04:16:43,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 04:16:43,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 04:16:43,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 04:16:43,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 04:16:43,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 04:16:43,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 04:16:43,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 04:16:43,746 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 04:16:43,746 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 04:16:43,747 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2019-09-08 04:16:43,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e18a79f8/3d509f60a2bd4b72886b0a12da8eaa85/FLAG967996e5f [2019-09-08 04:16:44,502 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 04:16:44,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2019-09-08 04:16:44,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e18a79f8/3d509f60a2bd4b72886b0a12da8eaa85/FLAG967996e5f [2019-09-08 04:16:44,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e18a79f8/3d509f60a2bd4b72886b0a12da8eaa85 [2019-09-08 04:16:44,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 04:16:44,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 04:16:44,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 04:16:44,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 04:16:44,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 04:16:44,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 04:16:44" (1/1) ... [2019-09-08 04:16:44,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af09ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:16:44, skipping insertion in model container [2019-09-08 04:16:44,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 04:16:44" (1/1) ... [2019-09-08 04:16:44,636 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 04:16:44,735 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 04:16:45,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 04:16:45,652 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 04:16:45,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 04:16:45,894 INFO L192 MainTranslator]: Completed translation [2019-09-08 04:16:45,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:16:45 WrapperNode [2019-09-08 04:16:45,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 04:16:45,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 04:16:45,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 04:16:45,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 04:16:45,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:16:45" (1/1) ... [2019-09-08 04:16:45,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:16:45" (1/1) ... [2019-09-08 04:16:45,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:16:45" (1/1) ... [2019-09-08 04:16:45,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:16:45" (1/1) ... [2019-09-08 04:16:46,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:16:45" (1/1) ... [2019-09-08 04:16:46,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:16:45" (1/1) ... [2019-09-08 04:16:46,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:16:45" (1/1) ... [2019-09-08 04:16:46,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 04:16:46,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 04:16:46,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 04:16:46,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 04:16:46,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:16:45" (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 [2019-09-08 04:16:46,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 04:16:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 04:16:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-08 04:16:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-08 04:16:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-09-08 04:16:46,213 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-09-08 04:16:46,214 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-09-08 04:16:46,214 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-09-08 04:16:46,214 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-09-08 04:16:46,214 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-09-08 04:16:46,214 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-09-08 04:16:46,214 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-09-08 04:16:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-08 04:16:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-09-08 04:16:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-09-08 04:16:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-09-08 04:16:46,216 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-08 04:16:46,216 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-09-08 04:16:46,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-08 04:16:46,217 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-08 04:16:46,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 04:16:46,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-09-08 04:16:46,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-09-08 04:16:46,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-09-08 04:16:46,218 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-09-08 04:16:46,218 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-09-08 04:16:46,219 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-09-08 04:16:46,219 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-09-08 04:16:46,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-09-08 04:16:46,219 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-09-08 04:16:46,219 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-09-08 04:16:46,220 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-09-08 04:16:46,220 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-09-08 04:16:46,220 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-09-08 04:16:46,220 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-09-08 04:16:46,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-09-08 04:16:46,221 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-09-08 04:16:46,221 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-09-08 04:16:46,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-09-08 04:16:46,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-09-08 04:16:46,221 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-09-08 04:16:46,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-09-08 04:16:46,222 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-09-08 04:16:46,222 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-09-08 04:16:46,222 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-09-08 04:16:46,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-09-08 04:16:46,222 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-09-08 04:16:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-09-08 04:16:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-09-08 04:16:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-09-08 04:16:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-09-08 04:16:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-09-08 04:16:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-09-08 04:16:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-08 04:16:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-09-08 04:16:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-09-08 04:16:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-09-08 04:16:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-09-08 04:16:46,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-09-08 04:16:46,225 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-09-08 04:16:46,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-09-08 04:16:46,225 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-09-08 04:16:46,225 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-09-08 04:16:46,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-09-08 04:16:46,226 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-09-08 04:16:46,226 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-09-08 04:16:46,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-09-08 04:16:46,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-08 04:16:46,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-09-08 04:16:46,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-08 04:16:46,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-08 04:16:46,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-08 04:16:46,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-08 04:16:46,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-08 04:16:46,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-08 04:16:46,228 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-08 04:16:46,228 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-08 04:16:46,228 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-08 04:16:46,228 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-08 04:16:46,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-08 04:16:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 04:16:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 04:16:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-09-08 04:16:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-09-08 04:16:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-09-08 04:16:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-08 04:16:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-08 04:16:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-08 04:16:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-09-08 04:16:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-09-08 04:16:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-09-08 04:16:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-09-08 04:16:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-09-08 04:16:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-09-08 04:16:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-09-08 04:16:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-09-08 04:16:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-08 04:16:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-09-08 04:16:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-09-08 04:16:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-09-08 04:16:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-09-08 04:16:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-09-08 04:16:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-09-08 04:16:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-08 04:16:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-09-08 04:16:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-08 04:16:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-08 04:16:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-08 04:16:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-08 04:16:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-08 04:16:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 04:16:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-09-08 04:16:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-09-08 04:16:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-09-08 04:16:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-09-08 04:16:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-09-08 04:16:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-08 04:16:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-09-08 04:16:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-09-08 04:16:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-09-08 04:16:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-09-08 04:16:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-09-08 04:16:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-09-08 04:16:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-09-08 04:16:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-09-08 04:16:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-09-08 04:16:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-09-08 04:16:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-09-08 04:16:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-09-08 04:16:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-09-08 04:16:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-09-08 04:16:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-09-08 04:16:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-09-08 04:16:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-09-08 04:16:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-09-08 04:16:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-09-08 04:16:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-09-08 04:16:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-09-08 04:16:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-09-08 04:16:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-09-08 04:16:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-09-08 04:16:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-09-08 04:16:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-09-08 04:16:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-09-08 04:16:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-09-08 04:16:46,239 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-09-08 04:16:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-09-08 04:16:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-09-08 04:16:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-08 04:16:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-09-08 04:16:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-09-08 04:16:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 04:16:46,240 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-09-08 04:16:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-09-08 04:16:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-08 04:16:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-08 04:16:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 04:16:46,241 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 04:16:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-08 04:16:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 04:16:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 04:16:46,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 04:16:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 04:16:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-08 04:16:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 04:16:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-08 04:16:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-08 04:16:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 04:16:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-08 04:16:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-08 04:16:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-08 04:16:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-08 04:16:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 04:16:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-08 04:16:46,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 04:16:48,908 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 04:16:48,908 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-09-08 04:16:48,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 04:16:48 BoogieIcfgContainer [2019-09-08 04:16:48,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 04:16:48,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 04:16:48,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 04:16:48,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 04:16:48,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 04:16:44" (1/3) ... [2019-09-08 04:16:48,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dbaa80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 04:16:48, skipping insertion in model container [2019-09-08 04:16:48,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 04:16:45" (2/3) ... [2019-09-08 04:16:48,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dbaa80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 04:16:48, skipping insertion in model container [2019-09-08 04:16:48,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 04:16:48" (3/3) ... [2019-09-08 04:16:48,921 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2019-09-08 04:16:48,931 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 04:16:48,942 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 04:16:48,959 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 04:16:49,009 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 04:16:49,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 04:16:49,010 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 04:16:49,010 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 04:16:49,010 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 04:16:49,010 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 04:16:49,010 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 04:16:49,010 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 04:16:49,011 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 04:16:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2019-09-08 04:16:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-09-08 04:16:49,065 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:49,066 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:16:49,070 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:49,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:49,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1561812380, now seen corresponding path program 1 times [2019-09-08 04:16:49,078 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:49,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:49,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:49,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:49,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:16:49,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:16:49,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:16:49,866 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:16:49,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:16:49,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:16:49,890 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 7 states. [2019-09-08 04:16:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:50,233 INFO L93 Difference]: Finished difference Result 1345 states and 2150 transitions. [2019-09-08 04:16:50,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:16:50,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-09-08 04:16:50,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:50,261 INFO L225 Difference]: With dead ends: 1345 [2019-09-08 04:16:50,261 INFO L226 Difference]: Without dead ends: 681 [2019-09-08 04:16:50,273 INFO L628 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 [2019-09-08 04:16:50,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2019-09-08 04:16:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 679. [2019-09-08 04:16:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-09-08 04:16:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1070 transitions. [2019-09-08 04:16:50,389 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1070 transitions. Word has length 93 [2019-09-08 04:16:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:16:50,389 INFO L475 AbstractCegarLoop]: Abstraction has 679 states and 1070 transitions. [2019-09-08 04:16:50,390 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:16:50,390 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1070 transitions. [2019-09-08 04:16:50,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-08 04:16:50,396 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:50,396 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 04:16:50,397 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:50,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:50,397 INFO L82 PathProgramCache]: Analyzing trace with hash 46311185, now seen corresponding path program 1 times [2019-09-08 04:16:50,397 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:50,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:50,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:50,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:50,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:16:50,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:16:50,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:16:50,651 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:16:50,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:16:50,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:16:50,652 INFO L87 Difference]: Start difference. First operand 679 states and 1070 transitions. Second operand 4 states. [2019-09-08 04:16:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:50,762 INFO L93 Difference]: Finished difference Result 1324 states and 2105 transitions. [2019-09-08 04:16:50,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 04:16:50,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-09-08 04:16:50,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:50,771 INFO L225 Difference]: With dead ends: 1324 [2019-09-08 04:16:50,771 INFO L226 Difference]: Without dead ends: 661 [2019-09-08 04:16:50,779 INFO L628 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 [2019-09-08 04:16:50,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2019-09-08 04:16:50,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2019-09-08 04:16:50,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2019-09-08 04:16:50,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1037 transitions. [2019-09-08 04:16:50,845 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1037 transitions. Word has length 94 [2019-09-08 04:16:50,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:16:50,848 INFO L475 AbstractCegarLoop]: Abstraction has 661 states and 1037 transitions. [2019-09-08 04:16:50,848 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:16:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1037 transitions. [2019-09-08 04:16:50,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-09-08 04:16:50,860 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:50,860 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 04:16:50,861 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:50,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1318948269, now seen corresponding path program 1 times [2019-09-08 04:16:50,861 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:50,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:50,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:50,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:50,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:16:51,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:16:51,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:16:51,198 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:16:51,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:16:51,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:16:51,199 INFO L87 Difference]: Start difference. First operand 661 states and 1037 transitions. Second operand 7 states. [2019-09-08 04:16:51,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:51,327 INFO L93 Difference]: Finished difference Result 1293 states and 2047 transitions. [2019-09-08 04:16:51,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:16:51,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-09-08 04:16:51,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:51,338 INFO L225 Difference]: With dead ends: 1293 [2019-09-08 04:16:51,338 INFO L226 Difference]: Without dead ends: 655 [2019-09-08 04:16:51,342 INFO L628 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 [2019-09-08 04:16:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2019-09-08 04:16:51,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2019-09-08 04:16:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2019-09-08 04:16:51,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1024 transitions. [2019-09-08 04:16:51,370 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1024 transitions. Word has length 94 [2019-09-08 04:16:51,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:16:51,371 INFO L475 AbstractCegarLoop]: Abstraction has 655 states and 1024 transitions. [2019-09-08 04:16:51,371 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:16:51,371 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1024 transitions. [2019-09-08 04:16:51,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-09-08 04:16:51,373 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:51,373 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 04:16:51,374 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:51,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:51,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1711940512, now seen corresponding path program 1 times [2019-09-08 04:16:51,374 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:51,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:51,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:51,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:51,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:16:51,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:16:51,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:16:51,562 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:16:51,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:16:51,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:16:51,563 INFO L87 Difference]: Start difference. First operand 655 states and 1024 transitions. Second operand 7 states. [2019-09-08 04:16:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:51,661 INFO L93 Difference]: Finished difference Result 1281 states and 2021 transitions. [2019-09-08 04:16:51,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:16:51,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-09-08 04:16:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:51,667 INFO L225 Difference]: With dead ends: 1281 [2019-09-08 04:16:51,668 INFO L226 Difference]: Without dead ends: 649 [2019-09-08 04:16:51,671 INFO L628 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 [2019-09-08 04:16:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-09-08 04:16:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2019-09-08 04:16:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-09-08 04:16:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1011 transitions. [2019-09-08 04:16:51,698 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1011 transitions. Word has length 95 [2019-09-08 04:16:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:16:51,698 INFO L475 AbstractCegarLoop]: Abstraction has 649 states and 1011 transitions. [2019-09-08 04:16:51,698 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:16:51,698 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1011 transitions. [2019-09-08 04:16:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 04:16:51,700 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:51,700 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:16:51,700 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:51,701 INFO L82 PathProgramCache]: Analyzing trace with hash -974599401, now seen corresponding path program 1 times [2019-09-08 04:16:51,701 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:51,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:51,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:51,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:51,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:16:51,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:16:51,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:16:51,863 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:16:51,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:16:51,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:16:51,864 INFO L87 Difference]: Start difference. First operand 649 states and 1011 transitions. Second operand 7 states. [2019-09-08 04:16:51,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:51,985 INFO L93 Difference]: Finished difference Result 1269 states and 1995 transitions. [2019-09-08 04:16:51,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:16:51,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-09-08 04:16:51,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:51,992 INFO L225 Difference]: With dead ends: 1269 [2019-09-08 04:16:51,993 INFO L226 Difference]: Without dead ends: 643 [2019-09-08 04:16:51,997 INFO L628 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 [2019-09-08 04:16:51,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-09-08 04:16:52,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-09-08 04:16:52,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-09-08 04:16:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 998 transitions. [2019-09-08 04:16:52,084 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 998 transitions. Word has length 96 [2019-09-08 04:16:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:16:52,085 INFO L475 AbstractCegarLoop]: Abstraction has 643 states and 998 transitions. [2019-09-08 04:16:52,085 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:16:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 998 transitions. [2019-09-08 04:16:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-08 04:16:52,087 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:52,088 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:16:52,088 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:52,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:52,089 INFO L82 PathProgramCache]: Analyzing trace with hash 414342424, now seen corresponding path program 1 times [2019-09-08 04:16:52,090 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:52,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:52,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:52,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:52,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:16:52,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:16:52,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:16:52,268 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:16:52,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:16:52,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:16:52,269 INFO L87 Difference]: Start difference. First operand 643 states and 998 transitions. Second operand 7 states. [2019-09-08 04:16:52,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:52,353 INFO L93 Difference]: Finished difference Result 1257 states and 1969 transitions. [2019-09-08 04:16:52,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:16:52,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-09-08 04:16:52,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:52,360 INFO L225 Difference]: With dead ends: 1257 [2019-09-08 04:16:52,360 INFO L226 Difference]: Without dead ends: 643 [2019-09-08 04:16:52,364 INFO L628 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 [2019-09-08 04:16:52,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-09-08 04:16:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-09-08 04:16:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-09-08 04:16:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 997 transitions. [2019-09-08 04:16:52,390 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 997 transitions. Word has length 96 [2019-09-08 04:16:52,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:16:52,391 INFO L475 AbstractCegarLoop]: Abstraction has 643 states and 997 transitions. [2019-09-08 04:16:52,392 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:16:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 997 transitions. [2019-09-08 04:16:52,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-08 04:16:52,395 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:52,395 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 04:16:52,395 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:52,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:52,396 INFO L82 PathProgramCache]: Analyzing trace with hash -512802396, now seen corresponding path program 1 times [2019-09-08 04:16:52,396 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:52,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:52,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:52,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:52,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:16:52,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:16:52,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:16:52,534 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:16:52,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:16:52,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:16:52,536 INFO L87 Difference]: Start difference. First operand 643 states and 997 transitions. Second operand 5 states. [2019-09-08 04:16:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:52,637 INFO L93 Difference]: Finished difference Result 1256 states and 1966 transitions. [2019-09-08 04:16:52,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:16:52,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-09-08 04:16:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:52,645 INFO L225 Difference]: With dead ends: 1256 [2019-09-08 04:16:52,645 INFO L226 Difference]: Without dead ends: 643 [2019-09-08 04:16:52,653 INFO L628 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 [2019-09-08 04:16:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-09-08 04:16:52,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-09-08 04:16:52,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-09-08 04:16:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 996 transitions. [2019-09-08 04:16:52,687 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 996 transitions. Word has length 97 [2019-09-08 04:16:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:16:52,688 INFO L475 AbstractCegarLoop]: Abstraction has 643 states and 996 transitions. [2019-09-08 04:16:52,688 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:16:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 996 transitions. [2019-09-08 04:16:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-08 04:16:52,696 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:52,697 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 04:16:52,697 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:52,698 INFO L82 PathProgramCache]: Analyzing trace with hash -288681029, now seen corresponding path program 1 times [2019-09-08 04:16:52,698 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:52,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:52,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:52,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:52,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:16:52,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:16:52,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:16:52,891 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:16:52,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:16:52,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:16:52,892 INFO L87 Difference]: Start difference. First operand 643 states and 996 transitions. Second operand 5 states. [2019-09-08 04:16:53,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:53,067 INFO L93 Difference]: Finished difference Result 1256 states and 1964 transitions. [2019-09-08 04:16:53,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:16:53,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-09-08 04:16:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:53,076 INFO L225 Difference]: With dead ends: 1256 [2019-09-08 04:16:53,076 INFO L226 Difference]: Without dead ends: 643 [2019-09-08 04:16:53,081 INFO L628 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 [2019-09-08 04:16:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-09-08 04:16:53,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-09-08 04:16:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-09-08 04:16:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 995 transitions. [2019-09-08 04:16:53,113 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 995 transitions. Word has length 98 [2019-09-08 04:16:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:16:53,114 INFO L475 AbstractCegarLoop]: Abstraction has 643 states and 995 transitions. [2019-09-08 04:16:53,114 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:16:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 995 transitions. [2019-09-08 04:16:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-08 04:16:53,116 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:53,116 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 04:16:53,116 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:53,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:53,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1377915425, now seen corresponding path program 1 times [2019-09-08 04:16:53,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:53,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:53,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:53,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:53,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:16:53,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:16:53,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:16:53,265 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:16:53,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:16:53,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:16:53,266 INFO L87 Difference]: Start difference. First operand 643 states and 995 transitions. Second operand 5 states. [2019-09-08 04:16:53,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:53,343 INFO L93 Difference]: Finished difference Result 1256 states and 1962 transitions. [2019-09-08 04:16:53,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:16:53,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-09-08 04:16:53,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:53,349 INFO L225 Difference]: With dead ends: 1256 [2019-09-08 04:16:53,349 INFO L226 Difference]: Without dead ends: 643 [2019-09-08 04:16:53,357 INFO L628 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 [2019-09-08 04:16:53,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-09-08 04:16:53,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-09-08 04:16:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-09-08 04:16:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 994 transitions. [2019-09-08 04:16:53,398 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 994 transitions. Word has length 99 [2019-09-08 04:16:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:16:53,398 INFO L475 AbstractCegarLoop]: Abstraction has 643 states and 994 transitions. [2019-09-08 04:16:53,398 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:16:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 994 transitions. [2019-09-08 04:16:53,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-08 04:16:53,400 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:53,400 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 04:16:53,401 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:53,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:53,402 INFO L82 PathProgramCache]: Analyzing trace with hash -231505514, now seen corresponding path program 1 times [2019-09-08 04:16:53,402 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:53,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:53,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:53,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:53,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:16:53,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:16:53,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 04:16:53,552 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 04:16:53,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 04:16:53,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 04:16:53,553 INFO L87 Difference]: Start difference. First operand 643 states and 994 transitions. Second operand 5 states. [2019-09-08 04:16:53,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:53,633 INFO L93 Difference]: Finished difference Result 1256 states and 1960 transitions. [2019-09-08 04:16:53,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:16:53,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-09-08 04:16:53,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:53,639 INFO L225 Difference]: With dead ends: 1256 [2019-09-08 04:16:53,639 INFO L226 Difference]: Without dead ends: 643 [2019-09-08 04:16:53,643 INFO L628 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 [2019-09-08 04:16:53,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-09-08 04:16:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-09-08 04:16:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-09-08 04:16:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 993 transitions. [2019-09-08 04:16:53,679 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 993 transitions. Word has length 100 [2019-09-08 04:16:53,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:16:53,679 INFO L475 AbstractCegarLoop]: Abstraction has 643 states and 993 transitions. [2019-09-08 04:16:53,679 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 04:16:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 993 transitions. [2019-09-08 04:16:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-08 04:16:53,681 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:53,681 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 04:16:53,681 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:53,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:53,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1500401178, now seen corresponding path program 1 times [2019-09-08 04:16:53,682 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:53,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:53,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:53,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:53,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:16:53,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:16:53,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 04:16:53,909 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 04:16:53,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 04:16:53,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 04:16:53,910 INFO L87 Difference]: Start difference. First operand 643 states and 993 transitions. Second operand 8 states. [2019-09-08 04:16:57,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:16:57,799 INFO L93 Difference]: Finished difference Result 2359 states and 3709 transitions. [2019-09-08 04:16:57,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 04:16:57,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2019-09-08 04:16:57,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:16:57,819 INFO L225 Difference]: With dead ends: 2359 [2019-09-08 04:16:57,819 INFO L226 Difference]: Without dead ends: 1750 [2019-09-08 04:16:57,826 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 04:16:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2019-09-08 04:16:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1738. [2019-09-08 04:16:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2019-09-08 04:16:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2690 transitions. [2019-09-08 04:16:57,950 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2690 transitions. Word has length 101 [2019-09-08 04:16:57,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:16:57,950 INFO L475 AbstractCegarLoop]: Abstraction has 1738 states and 2690 transitions. [2019-09-08 04:16:57,950 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 04:16:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2690 transitions. [2019-09-08 04:16:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-08 04:16:57,952 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:16:57,952 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 04:16:57,953 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:16:57,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:16:57,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2018217190, now seen corresponding path program 1 times [2019-09-08 04:16:57,953 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:16:57,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:16:57,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:57,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:57,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:16:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 04:16:58,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:16:58,149 INFO L223 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 [2019-09-08 04:16:58,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:16:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:16:58,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 04:16:58,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:16:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 04:16:58,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:16:58,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2019-09-08 04:16:58,802 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 04:16:58,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 04:16:58,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-09-08 04:16:58,803 INFO L87 Difference]: Start difference. First operand 1738 states and 2690 transitions. Second operand 12 states. [2019-09-08 04:17:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:06,585 INFO L93 Difference]: Finished difference Result 8531 states and 13802 transitions. [2019-09-08 04:17:06,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-08 04:17:06,594 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2019-09-08 04:17:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:06,662 INFO L225 Difference]: With dead ends: 8531 [2019-09-08 04:17:06,662 INFO L226 Difference]: Without dead ends: 6827 [2019-09-08 04:17:06,677 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2019-09-08 04:17:06,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6827 states. [2019-09-08 04:17:06,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6827 to 4415. [2019-09-08 04:17:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4415 states. [2019-09-08 04:17:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 6914 transitions. [2019-09-08 04:17:06,963 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 6914 transitions. Word has length 101 [2019-09-08 04:17:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:06,963 INFO L475 AbstractCegarLoop]: Abstraction has 4415 states and 6914 transitions. [2019-09-08 04:17:06,964 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 04:17:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 6914 transitions. [2019-09-08 04:17:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-08 04:17:06,966 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:06,967 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 04:17:06,967 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:06,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2076925205, now seen corresponding path program 1 times [2019-09-08 04:17:06,968 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:06,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:06,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:06,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:06,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:17:07,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:07,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:17:07,175 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:17:07,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:17:07,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:17:07,177 INFO L87 Difference]: Start difference. First operand 4415 states and 6914 transitions. Second operand 7 states. [2019-09-08 04:17:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:10,283 INFO L93 Difference]: Finished difference Result 13055 states and 21016 transitions. [2019-09-08 04:17:10,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:17:10,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2019-09-08 04:17:10,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:10,347 INFO L225 Difference]: With dead ends: 13055 [2019-09-08 04:17:10,347 INFO L226 Difference]: Without dead ends: 8674 [2019-09-08 04:17:10,378 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-08 04:17:10,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8674 states. [2019-09-08 04:17:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8674 to 8586. [2019-09-08 04:17:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8586 states. [2019-09-08 04:17:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8586 states to 8586 states and 13540 transitions. [2019-09-08 04:17:10,778 INFO L78 Accepts]: Start accepts. Automaton has 8586 states and 13540 transitions. Word has length 104 [2019-09-08 04:17:10,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:10,779 INFO L475 AbstractCegarLoop]: Abstraction has 8586 states and 13540 transitions. [2019-09-08 04:17:10,779 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:17:10,779 INFO L276 IsEmpty]: Start isEmpty. Operand 8586 states and 13540 transitions. [2019-09-08 04:17:10,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 04:17:10,780 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:10,780 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 04:17:10,781 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:10,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:10,781 INFO L82 PathProgramCache]: Analyzing trace with hash -921011962, now seen corresponding path program 1 times [2019-09-08 04:17:10,781 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:10,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:10,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:10,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:10,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-08 04:17:10,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:10,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:17:10,901 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:17:10,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:17:10,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:17:10,902 INFO L87 Difference]: Start difference. First operand 8586 states and 13540 transitions. Second operand 4 states. [2019-09-08 04:17:11,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:11,379 INFO L93 Difference]: Finished difference Result 16715 states and 26653 transitions. [2019-09-08 04:17:11,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:17:11,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-09-08 04:17:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:11,485 INFO L225 Difference]: With dead ends: 16715 [2019-09-08 04:17:11,485 INFO L226 Difference]: Without dead ends: 8151 [2019-09-08 04:17:11,545 INFO L628 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 [2019-09-08 04:17:11,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8151 states. [2019-09-08 04:17:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8151 to 8129. [2019-09-08 04:17:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8129 states. [2019-09-08 04:17:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8129 states to 8129 states and 12808 transitions. [2019-09-08 04:17:11,972 INFO L78 Accepts]: Start accepts. Automaton has 8129 states and 12808 transitions. Word has length 105 [2019-09-08 04:17:11,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:11,973 INFO L475 AbstractCegarLoop]: Abstraction has 8129 states and 12808 transitions. [2019-09-08 04:17:11,973 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:17:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8129 states and 12808 transitions. [2019-09-08 04:17:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-08 04:17:11,974 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:11,974 INFO L399 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] [2019-09-08 04:17:11,975 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:11,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:11,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1506393718, now seen corresponding path program 1 times [2019-09-08 04:17:11,975 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:11,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:11,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:11,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:11,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 04:17:12,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:12,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:17:12,156 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:17:12,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:17:12,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:17:12,157 INFO L87 Difference]: Start difference. First operand 8129 states and 12808 transitions. Second operand 7 states. [2019-09-08 04:17:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:15,768 INFO L93 Difference]: Finished difference Result 24287 states and 39480 transitions. [2019-09-08 04:17:15,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:17:15,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-09-08 04:17:15,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:15,907 INFO L225 Difference]: With dead ends: 24287 [2019-09-08 04:17:15,907 INFO L226 Difference]: Without dead ends: 16192 [2019-09-08 04:17:15,954 INFO L628 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 [2019-09-08 04:17:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16192 states. [2019-09-08 04:17:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16192 to 16068. [2019-09-08 04:17:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16068 states. [2019-09-08 04:17:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16068 states to 16068 states and 25687 transitions. [2019-09-08 04:17:16,775 INFO L78 Accepts]: Start accepts. Automaton has 16068 states and 25687 transitions. Word has length 113 [2019-09-08 04:17:16,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:16,776 INFO L475 AbstractCegarLoop]: Abstraction has 16068 states and 25687 transitions. [2019-09-08 04:17:16,776 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:17:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 16068 states and 25687 transitions. [2019-09-08 04:17:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-08 04:17:16,778 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:16,779 INFO L399 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] [2019-09-08 04:17:16,779 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:16,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:16,779 INFO L82 PathProgramCache]: Analyzing trace with hash -105867251, now seen corresponding path program 1 times [2019-09-08 04:17:16,780 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:16,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:16,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:16,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:16,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 04:17:16,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:16,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:17:16,950 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:17:16,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:17:16,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:17:16,950 INFO L87 Difference]: Start difference. First operand 16068 states and 25687 transitions. Second operand 4 states. [2019-09-08 04:17:17,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:17,535 INFO L93 Difference]: Finished difference Result 31727 states and 51309 transitions. [2019-09-08 04:17:17,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:17:17,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-09-08 04:17:17,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:17,657 INFO L225 Difference]: With dead ends: 31727 [2019-09-08 04:17:17,658 INFO L226 Difference]: Without dead ends: 15681 [2019-09-08 04:17:17,738 INFO L628 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 [2019-09-08 04:17:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15681 states. [2019-09-08 04:17:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15681 to 15641. [2019-09-08 04:17:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15641 states. [2019-09-08 04:17:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15641 states to 15641 states and 24972 transitions. [2019-09-08 04:17:18,815 INFO L78 Accepts]: Start accepts. Automaton has 15641 states and 24972 transitions. Word has length 114 [2019-09-08 04:17:18,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:18,815 INFO L475 AbstractCegarLoop]: Abstraction has 15641 states and 24972 transitions. [2019-09-08 04:17:18,815 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:17:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 15641 states and 24972 transitions. [2019-09-08 04:17:18,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-09-08 04:17:18,817 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:18,817 INFO L399 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] [2019-09-08 04:17:18,817 INFO L418 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:18,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:18,818 INFO L82 PathProgramCache]: Analyzing trace with hash 11760676, now seen corresponding path program 1 times [2019-09-08 04:17:18,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:18,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:18,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:18,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:18,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-08 04:17:18,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:18,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:17:18,980 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:17:18,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:17:18,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:17:18,981 INFO L87 Difference]: Start difference. First operand 15641 states and 24972 transitions. Second operand 7 states. [2019-09-08 04:17:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:23,262 INFO L93 Difference]: Finished difference Result 46947 states and 77811 transitions. [2019-09-08 04:17:23,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:17:23,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-09-08 04:17:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:23,456 INFO L225 Difference]: With dead ends: 46947 [2019-09-08 04:17:23,457 INFO L226 Difference]: Without dead ends: 31340 [2019-09-08 04:17:23,547 INFO L628 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 [2019-09-08 04:17:23,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31340 states. [2019-09-08 04:17:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31340 to 31156. [2019-09-08 04:17:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31156 states. [2019-09-08 04:17:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31156 states to 31156 states and 50948 transitions. [2019-09-08 04:17:25,014 INFO L78 Accepts]: Start accepts. Automaton has 31156 states and 50948 transitions. Word has length 123 [2019-09-08 04:17:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:25,015 INFO L475 AbstractCegarLoop]: Abstraction has 31156 states and 50948 transitions. [2019-09-08 04:17:25,015 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:17:25,015 INFO L276 IsEmpty]: Start isEmpty. Operand 31156 states and 50948 transitions. [2019-09-08 04:17:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-08 04:17:25,017 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:25,017 INFO L399 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] [2019-09-08 04:17:25,017 INFO L418 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:25,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:25,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2126900327, now seen corresponding path program 1 times [2019-09-08 04:17:25,018 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:25,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:25,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:25,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:25,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 04:17:25,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:25,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:17:25,125 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:17:25,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:17:25,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:17:25,126 INFO L87 Difference]: Start difference. First operand 31156 states and 50948 transitions. Second operand 4 states. [2019-09-08 04:17:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:26,152 INFO L93 Difference]: Finished difference Result 61951 states and 102733 transitions. [2019-09-08 04:17:26,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:17:26,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-09-08 04:17:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:26,304 INFO L225 Difference]: With dead ends: 61951 [2019-09-08 04:17:26,304 INFO L226 Difference]: Without dead ends: 30817 [2019-09-08 04:17:26,424 INFO L628 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 [2019-09-08 04:17:26,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30817 states. [2019-09-08 04:17:29,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30817 to 30741. [2019-09-08 04:17:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30741 states. [2019-09-08 04:17:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30741 states to 30741 states and 50200 transitions. [2019-09-08 04:17:29,498 INFO L78 Accepts]: Start accepts. Automaton has 30741 states and 50200 transitions. Word has length 124 [2019-09-08 04:17:29,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:29,499 INFO L475 AbstractCegarLoop]: Abstraction has 30741 states and 50200 transitions. [2019-09-08 04:17:29,499 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:17:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 30741 states and 50200 transitions. [2019-09-08 04:17:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-08 04:17:29,501 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:29,501 INFO L399 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] [2019-09-08 04:17:29,501 INFO L418 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:29,502 INFO L82 PathProgramCache]: Analyzing trace with hash 923573511, now seen corresponding path program 1 times [2019-09-08 04:17:29,502 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:29,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:29,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:29,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:29,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-09-08 04:17:29,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:29,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:17:29,692 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:17:29,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:17:29,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:17:29,693 INFO L87 Difference]: Start difference. First operand 30741 states and 50200 transitions. Second operand 7 states. [2019-09-08 04:17:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:33,858 INFO L93 Difference]: Finished difference Result 92427 states and 158306 transitions. [2019-09-08 04:17:33,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 04:17:33,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-09-08 04:17:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:34,226 INFO L225 Difference]: With dead ends: 92427 [2019-09-08 04:17:34,227 INFO L226 Difference]: Without dead ends: 61720 [2019-09-08 04:17:34,390 INFO L628 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 [2019-09-08 04:17:34,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61720 states. [2019-09-08 04:17:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61720 to 61436. [2019-09-08 04:17:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61436 states. [2019-09-08 04:17:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61436 states to 61436 states and 104155 transitions. [2019-09-08 04:17:39,581 INFO L78 Accepts]: Start accepts. Automaton has 61436 states and 104155 transitions. Word has length 134 [2019-09-08 04:17:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:39,582 INFO L475 AbstractCegarLoop]: Abstraction has 61436 states and 104155 transitions. [2019-09-08 04:17:39,582 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:17:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 61436 states and 104155 transitions. [2019-09-08 04:17:39,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-09-08 04:17:39,583 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:39,584 INFO L399 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] [2019-09-08 04:17:39,584 INFO L418 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:39,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:39,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1650078764, now seen corresponding path program 1 times [2019-09-08 04:17:39,584 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:39,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:39,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:39,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:39,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-08 04:17:39,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:39,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 04:17:39,698 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 04:17:39,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 04:17:39,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 04:17:39,698 INFO L87 Difference]: Start difference. First operand 61436 states and 104155 transitions. Second operand 4 states. [2019-09-08 04:17:41,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:41,739 INFO L93 Difference]: Finished difference Result 121758 states and 210173 transitions. [2019-09-08 04:17:41,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 04:17:41,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2019-09-08 04:17:41,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:42,049 INFO L225 Difference]: With dead ends: 121758 [2019-09-08 04:17:42,049 INFO L226 Difference]: Without dead ends: 60338 [2019-09-08 04:17:42,228 INFO L628 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 [2019-09-08 04:17:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60338 states. [2019-09-08 04:17:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60338 to 60194. [2019-09-08 04:17:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60194 states. [2019-09-08 04:17:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60194 states to 60194 states and 101718 transitions. [2019-09-08 04:17:46,657 INFO L78 Accepts]: Start accepts. Automaton has 60194 states and 101718 transitions. Word has length 135 [2019-09-08 04:17:46,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:46,658 INFO L475 AbstractCegarLoop]: Abstraction has 60194 states and 101718 transitions. [2019-09-08 04:17:46,658 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 04:17:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 60194 states and 101718 transitions. [2019-09-08 04:17:46,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-08 04:17:46,659 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:46,659 INFO L399 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] [2019-09-08 04:17:46,659 INFO L418 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:46,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:46,660 INFO L82 PathProgramCache]: Analyzing trace with hash -904937108, now seen corresponding path program 1 times [2019-09-08 04:17:46,660 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:46,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:46,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:46,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:46,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-09-08 04:17:46,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 04:17:46,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 04:17:46,780 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 04:17:46,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 04:17:46,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-08 04:17:46,780 INFO L87 Difference]: Start difference. First operand 60194 states and 101718 transitions. Second operand 7 states. [2019-09-08 04:17:50,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:17:50,076 INFO L93 Difference]: Finished difference Result 137563 states and 250549 transitions. [2019-09-08 04:17:50,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 04:17:50,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2019-09-08 04:17:50,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:17:50,612 INFO L225 Difference]: With dead ends: 137563 [2019-09-08 04:17:50,612 INFO L226 Difference]: Without dead ends: 77403 [2019-09-08 04:17:50,950 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-08 04:17:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77403 states. [2019-09-08 04:17:53,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77403 to 68541. [2019-09-08 04:17:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68541 states. [2019-09-08 04:17:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68541 states to 68541 states and 115835 transitions. [2019-09-08 04:17:53,952 INFO L78 Accepts]: Start accepts. Automaton has 68541 states and 115835 transitions. Word has length 136 [2019-09-08 04:17:53,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:17:53,952 INFO L475 AbstractCegarLoop]: Abstraction has 68541 states and 115835 transitions. [2019-09-08 04:17:53,952 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 04:17:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand 68541 states and 115835 transitions. [2019-09-08 04:17:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-09-08 04:17:53,964 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:17:53,964 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:17:53,965 INFO L418 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:17:53,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:17:53,965 INFO L82 PathProgramCache]: Analyzing trace with hash -813354633, now seen corresponding path program 1 times [2019-09-08 04:17:53,965 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:17:53,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:17:53,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:53,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:17:53,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:17:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-09-08 04:17:54,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:17:54,191 INFO L223 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) [2019-09-08 04:17:54,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:17:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:17:57,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 3740 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 04:17:57,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:17:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-09-08 04:17:57,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:17:57,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-09-08 04:17:57,825 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 04:17:57,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 04:17:57,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-09-08 04:17:57,827 INFO L87 Difference]: Start difference. First operand 68541 states and 115835 transitions. Second operand 15 states. [2019-09-08 04:18:01,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:18:01,650 INFO L93 Difference]: Finished difference Result 137496 states and 245081 transitions. [2019-09-08 04:18:01,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 04:18:01,654 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 240 [2019-09-08 04:18:01,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:18:01,999 INFO L225 Difference]: With dead ends: 137496 [2019-09-08 04:18:01,999 INFO L226 Difference]: Without dead ends: 68989 [2019-09-08 04:18:02,255 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2019-09-08 04:18:02,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68989 states. [2019-09-08 04:18:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68989 to 68989. [2019-09-08 04:18:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68989 states. [2019-09-08 04:18:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68989 states to 68989 states and 116091 transitions. [2019-09-08 04:18:04,992 INFO L78 Accepts]: Start accepts. Automaton has 68989 states and 116091 transitions. Word has length 240 [2019-09-08 04:18:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:18:04,993 INFO L475 AbstractCegarLoop]: Abstraction has 68989 states and 116091 transitions. [2019-09-08 04:18:04,993 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 04:18:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 68989 states and 116091 transitions. [2019-09-08 04:18:05,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-09-08 04:18:05,005 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:18:05,006 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:18:05,006 INFO L418 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:18:05,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:18:05,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1773840437, now seen corresponding path program 1 times [2019-09-08 04:18:05,007 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:18:05,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:18:05,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:05,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:18:05,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-09-08 04:18:05,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:18:05,243 INFO L223 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) [2019-09-08 04:18:05,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:18:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:05,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 3742 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 04:18:05,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:18:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Stream closed [2019-09-08 04:18:06,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:18:06,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2019-09-08 04:18:06,036 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-08 04:18:06,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-08 04:18:06,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2019-09-08 04:18:06,037 INFO L87 Difference]: Start difference. First operand 68989 states and 116091 transitions. Second operand 18 states. [2019-09-08 04:18:30,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:18:30,486 INFO L93 Difference]: Finished difference Result 219447 states and 405453 transitions. [2019-09-08 04:18:30,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-09-08 04:18:30,486 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 241 [2019-09-08 04:18:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:18:31,331 INFO L225 Difference]: With dead ends: 219447 [2019-09-08 04:18:31,332 INFO L226 Difference]: Without dead ends: 150489 [2019-09-08 04:18:31,743 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2019-09-08 04:18:31,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150489 states. [2019-09-08 04:18:42,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150489 to 147789. [2019-09-08 04:18:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147789 states. [2019-09-08 04:18:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147789 states to 147789 states and 255458 transitions. [2019-09-08 04:18:44,560 INFO L78 Accepts]: Start accepts. Automaton has 147789 states and 255458 transitions. Word has length 241 [2019-09-08 04:18:44,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:18:44,560 INFO L475 AbstractCegarLoop]: Abstraction has 147789 states and 255458 transitions. [2019-09-08 04:18:44,560 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-08 04:18:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand 147789 states and 255458 transitions. [2019-09-08 04:18:44,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-09-08 04:18:44,573 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:18:44,574 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:18:44,574 INFO L418 AbstractCegarLoop]: === Iteration 24 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:18:44,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:18:44,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1656250651, now seen corresponding path program 1 times [2019-09-08 04:18:44,574 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:18:44,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:18:44,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:44,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:18:44,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:18:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-09-08 04:18:44,798 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:18:44,798 INFO L223 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) [2019-09-08 04:18:44,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:18:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:18:45,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 3742 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 04:18:45,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:18:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-09-08 04:18:45,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:18:45,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-09-08 04:18:45,462 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 04:18:45,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 04:18:45,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-09-08 04:18:45,463 INFO L87 Difference]: Start difference. First operand 147789 states and 255458 transitions. Second operand 15 states. [2019-09-08 04:18:59,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:18:59,420 INFO L93 Difference]: Finished difference Result 297539 states and 560341 transitions. [2019-09-08 04:18:59,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 04:18:59,420 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 242 [2019-09-08 04:18:59,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:00,718 INFO L225 Difference]: With dead ends: 297539 [2019-09-08 04:19:00,718 INFO L226 Difference]: Without dead ends: 149784 [2019-09-08 04:19:01,775 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2019-09-08 04:19:01,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149784 states. [2019-09-08 04:19:12,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149784 to 149784. [2019-09-08 04:19:12,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149784 states. [2019-09-08 04:19:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149784 states to 149784 states and 257078 transitions. [2019-09-08 04:19:14,040 INFO L78 Accepts]: Start accepts. Automaton has 149784 states and 257078 transitions. Word has length 242 [2019-09-08 04:19:14,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:19:14,041 INFO L475 AbstractCegarLoop]: Abstraction has 149784 states and 257078 transitions. [2019-09-08 04:19:14,041 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 04:19:14,041 INFO L276 IsEmpty]: Start isEmpty. Operand 149784 states and 257078 transitions. [2019-09-08 04:19:14,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2019-09-08 04:19:14,052 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:19:14,053 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 6, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 04:19:14,053 INFO L418 AbstractCegarLoop]: === Iteration 25 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:19:14,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:19:14,053 INFO L82 PathProgramCache]: Analyzing trace with hash 896289790, now seen corresponding path program 1 times [2019-09-08 04:19:14,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:19:14,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:19:14,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:14,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:14,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:19:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2019-09-08 04:19:14,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:19:14,304 INFO L223 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 [2019-09-08 04:19:14,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:19:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:19:14,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 4117 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-08 04:19:14,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:19:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-09-08 04:19:15,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:19:15,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2019-09-08 04:19:15,193 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 04:19:15,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 04:19:15,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2019-09-08 04:19:15,194 INFO L87 Difference]: Start difference. First operand 149784 states and 257078 transitions. Second operand 17 states. [2019-09-08 04:19:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:19:44,881 INFO L93 Difference]: Finished difference Result 356454 states and 716229 transitions. [2019-09-08 04:19:44,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-08 04:19:44,881 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 315 [2019-09-08 04:19:44,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:19:46,048 INFO L225 Difference]: With dead ends: 356454 [2019-09-08 04:19:46,048 INFO L226 Difference]: Without dead ends: 206508 [2019-09-08 04:19:47,417 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=394, Invalid=1768, Unknown=0, NotChecked=0, Total=2162 [2019-09-08 04:19:47,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206508 states. [2019-09-08 04:20:06,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206508 to 184839. [2019-09-08 04:20:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184839 states. [2019-09-08 04:20:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184839 states to 184839 states and 313433 transitions. [2019-09-08 04:20:08,550 INFO L78 Accepts]: Start accepts. Automaton has 184839 states and 313433 transitions. Word has length 315 [2019-09-08 04:20:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:20:08,551 INFO L475 AbstractCegarLoop]: Abstraction has 184839 states and 313433 transitions. [2019-09-08 04:20:08,551 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 04:20:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 184839 states and 313433 transitions. [2019-09-08 04:20:08,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2019-09-08 04:20:08,592 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:20:08,593 INFO L399 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 9, 6, 5, 5, 4, 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, 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, 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] [2019-09-08 04:20:08,593 INFO L418 AbstractCegarLoop]: === Iteration 26 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:20:08,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:20:08,594 INFO L82 PathProgramCache]: Analyzing trace with hash 902126382, now seen corresponding path program 1 times [2019-09-08 04:20:08,594 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:20:08,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:20:08,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:08,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:08,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2019-09-08 04:20:09,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:20:09,745 INFO L223 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 [2019-09-08 04:20:09,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:10,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 5555 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 04:20:10,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:20:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2019-09-08 04:20:10,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 04:20:10,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-09-08 04:20:10,790 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-08 04:20:10,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-08 04:20:10,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-09-08 04:20:10,791 INFO L87 Difference]: Start difference. First operand 184839 states and 313433 transitions. Second operand 15 states. [2019-09-08 04:20:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:20:27,285 INFO L93 Difference]: Finished difference Result 372397 states and 683653 transitions. [2019-09-08 04:20:27,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 04:20:27,285 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 504 [2019-09-08 04:20:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 04:20:28,147 INFO L225 Difference]: With dead ends: 372397 [2019-09-08 04:20:28,148 INFO L226 Difference]: Without dead ends: 187592 [2019-09-08 04:20:30,602 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 505 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2019-09-08 04:20:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187592 states. [2019-09-08 04:20:47,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187592 to 187424. [2019-09-08 04:20:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187424 states. [2019-09-08 04:20:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187424 states to 187424 states and 315780 transitions. [2019-09-08 04:20:49,744 INFO L78 Accepts]: Start accepts. Automaton has 187424 states and 315780 transitions. Word has length 504 [2019-09-08 04:20:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 04:20:49,745 INFO L475 AbstractCegarLoop]: Abstraction has 187424 states and 315780 transitions. [2019-09-08 04:20:49,745 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-08 04:20:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 187424 states and 315780 transitions. [2019-09-08 04:20:49,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2019-09-08 04:20:49,770 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 04:20:49,771 INFO L399 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 9, 6, 5, 5, 4, 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, 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, 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] [2019-09-08 04:20:49,771 INFO L418 AbstractCegarLoop]: === Iteration 27 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 04:20:49,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 04:20:49,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2092115876, now seen corresponding path program 1 times [2019-09-08 04:20:49,772 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 04:20:49,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 04:20:49,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:49,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 04:20:49,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 04:20:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2019-09-08 04:20:50,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 04:20:50,128 INFO L223 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) [2019-09-08 04:20:50,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 04:20:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 04:20:51,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 5557 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 04:20:51,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 04:20:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 438 proven. 20 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2019-09-08 04:20:52,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 04:20:52,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-09-08 04:20:52,085 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-08 04:20:52,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-08 04:20:52,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2019-09-08 04:20:52,086 INFO L87 Difference]: Start difference. First operand 187424 states and 315780 transitions. Second operand 19 states. [2019-09-08 04:23:38,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 04:23:38,570 INFO L93 Difference]: Finished difference Result 1129165 states and 2865123 transitions. [2019-09-08 04:23:38,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2019-09-08 04:23:38,570 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 506 [2019-09-08 04:23:38,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted.