/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:34:56,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:34:56,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:34:56,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:34:56,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:34:56,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:34:56,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:34:56,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:34:56,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:34:56,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:34:56,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:34:56,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:34:56,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:34:56,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:34:56,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:34:56,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:34:56,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:34:56,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:34:56,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:34:56,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:34:56,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:34:56,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:34:56,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:34:56,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:34:56,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:34:56,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:34:56,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:34:56,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:34:56,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:34:56,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:34:56,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:34:56,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:34:56,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:34:56,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:34:56,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:34:56,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:34:56,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:34:56,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:34:56,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:34:56,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:34:56,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:34:56,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:34:56,175 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:34:56,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:34:56,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:34:56,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:34:56,178 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:34:56,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:34:56,179 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:34:56,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:34:56,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:34:56,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:34:56,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:34:56,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:34:56,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:34:56,180 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:34:56,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:34:56,180 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:34:56,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:34:56,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:34:56,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:34:56,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:34:56,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:34:56,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:34:56,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:34:56,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:34:56,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:34:56,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:34:56,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:34:56,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:34:56,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:34:56,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:34:56,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:34:56,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:34:56,488 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:34:56,488 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:34:56,489 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c [2019-11-06 21:34:56,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efc8bae06/69bd629a44e44dafb9f9249022a2aca6/FLAGb2375f339 [2019-11-06 21:34:57,219 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:34:57,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c [2019-11-06 21:34:57,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efc8bae06/69bd629a44e44dafb9f9249022a2aca6/FLAGb2375f339 [2019-11-06 21:34:57,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efc8bae06/69bd629a44e44dafb9f9249022a2aca6 [2019-11-06 21:34:57,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:34:57,400 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:34:57,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:34:57,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:34:57,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:34:57,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:34:57" (1/1) ... [2019-11-06 21:34:57,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0aaeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:34:57, skipping insertion in model container [2019-11-06 21:34:57,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:34:57" (1/1) ... [2019-11-06 21:34:57,417 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:34:57,480 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:34:58,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:34:58,179 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:34:58,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:34:58,384 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:34:58,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:34:58 WrapperNode [2019-11-06 21:34:58,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:34:58,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:34:58,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:34:58,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:34:58,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:34:58" (1/1) ... [2019-11-06 21:34:58,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:34:58" (1/1) ... [2019-11-06 21:34:58,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:34:58" (1/1) ... [2019-11-06 21:34:58,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:34:58" (1/1) ... [2019-11-06 21:34:58,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:34:58" (1/1) ... [2019-11-06 21:34:58,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:34:58" (1/1) ... [2019-11-06 21:34:58,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:34:58" (1/1) ... [2019-11-06 21:34:58,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:34:58,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:34:58,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:34:58,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:34:58,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:34:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:34:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:34:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:34:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:34:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:34:58,664 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:34:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:34:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:34:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:34:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:34:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:34:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:34:58,667 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:34:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:34:58,668 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:34:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:34:58,669 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:34:58,671 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:34:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:34:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:34:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:34:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:34:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:34:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:34:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:34:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:34:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:34:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:34:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:34:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:34:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-06 21:34:58,674 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:34:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:34:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:34:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:34:58,675 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:34:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:34:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:34:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:34:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:34:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:34:58,676 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:34:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:34:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:34:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:34:58,678 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:34:58,678 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:34:58,678 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2019-11-06 21:34:58,678 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:34:58,679 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__empty [2019-11-06 21:34:58,679 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:34:58,679 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:34:58,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:34:58,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:34:58,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:34:58,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:34:58,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:34:58,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:34:58,680 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:34:58,681 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:34:58,681 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:34:58,681 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:34:58,681 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:34:58,682 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:34:58,682 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:34:58,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:34:58,682 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:34:58,683 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:34:58,683 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:34:58,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:34:58,684 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:34:58,684 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:34:58,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:34:58,685 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:34:58,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-06 21:34:58,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-06 21:34:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:34:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:34:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:34:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:34:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:34:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:34:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:34:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:34:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:34:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:34:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:34:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:34:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:34:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:34:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:34:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:34:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:34:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:34:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:34:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:34:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:34:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:34:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:34:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:34:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:34:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:34:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:34:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:34:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:34:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:34:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:34:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:34:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:34:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:34:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:34:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:34:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:34:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:34:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:34:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:34:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:34:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:34:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:34:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:34:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:34:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:34:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:34:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:34:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:34:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:34:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:34:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-06 21:34:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:34:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:34:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:34:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:34:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:34:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:34:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:34:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:34:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:34:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:34:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2019-11-06 21:34:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-06 21:34:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-06 21:34:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__empty [2019-11-06 21:34:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:34:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:34:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:34:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:34:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:34:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:34:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:34:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:34:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:34:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:34:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:34:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:34:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:34:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:34:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:34:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:34:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:34:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:34:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:34:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:34:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:34:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:34:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:34:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:35:01,167 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:35:01,168 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:35:01,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:35:01 BoogieIcfgContainer [2019-11-06 21:35:01,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:35:01,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:35:01,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:35:01,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:35:01,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:34:57" (1/3) ... [2019-11-06 21:35:01,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396bc87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:35:01, skipping insertion in model container [2019-11-06 21:35:01,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:34:58" (2/3) ... [2019-11-06 21:35:01,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396bc87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:35:01, skipping insertion in model container [2019-11-06 21:35:01,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:35:01" (3/3) ... [2019-11-06 21:35:01,177 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2019-11-06 21:35:01,187 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:35:01,195 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:35:01,207 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:35:01,239 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:35:01,239 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:35:01,239 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:35:01,239 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:35:01,239 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:35:01,239 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:35:01,240 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:35:01,240 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:35:01,275 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states. [2019-11-06 21:35:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-06 21:35:01,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:35:01,289 INFO L410 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] [2019-11-06 21:35:01,292 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:35:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:35:01,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1751841435, now seen corresponding path program 1 times [2019-11-06 21:35:01,308 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:35:01,308 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387319634] [2019-11-06 21:35:01,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:35:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:02,821 WARN L191 SmtUtils]: Spent 939.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:35:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,036 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-06 21:35:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,210 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-06 21:35:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:35:03,440 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387319634] [2019-11-06 21:35:03,441 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:35:03,441 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 21:35:03,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343085155] [2019-11-06 21:35:03,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:35:03,447 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:35:03,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:35:03,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:35:03,464 INFO L87 Difference]: Start difference. First operand 797 states. Second operand 12 states. [2019-11-06 21:35:04,849 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-11-06 21:35:05,944 WARN L191 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:35:06,887 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:35:07,802 WARN L191 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:35:08,821 WARN L191 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:35:09,781 WARN L191 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 390 [2019-11-06 21:35:13,014 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-11-06 21:35:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:35:34,054 INFO L93 Difference]: Finished difference Result 1602 states and 2778 transitions. [2019-11-06 21:35:34,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 21:35:34,056 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2019-11-06 21:35:34,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:35:34,093 INFO L225 Difference]: With dead ends: 1602 [2019-11-06 21:35:34,093 INFO L226 Difference]: Without dead ends: 972 [2019-11-06 21:35:34,107 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2019-11-06 21:35:34,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2019-11-06 21:35:34,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 636. [2019-11-06 21:35:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-11-06 21:35:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1014 transitions. [2019-11-06 21:35:34,407 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1014 transitions. Word has length 93 [2019-11-06 21:35:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:35:34,408 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 1014 transitions. [2019-11-06 21:35:34,408 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:35:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1014 transitions. [2019-11-06 21:35:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-06 21:35:34,424 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:35:34,424 INFO L410 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] [2019-11-06 21:35:34,425 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:35:34,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:35:34,425 INFO L82 PathProgramCache]: Analyzing trace with hash 449544218, now seen corresponding path program 1 times [2019-11-06 21:35:34,426 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:35:34,426 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988551673] [2019-11-06 21:35:34,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:35:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,325 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2019-11-06 21:35:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,510 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-11-06 21:35:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:35:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:35:35,840 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988551673] [2019-11-06 21:35:35,841 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:35:35,841 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:35:35,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604671385] [2019-11-06 21:35:35,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:35:35,843 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:35:35,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:35:35,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:35:35,844 INFO L87 Difference]: Start difference. First operand 636 states and 1014 transitions. Second operand 9 states. [2019-11-06 21:35:37,460 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2019-11-06 21:35:38,248 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 391