/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:31:24,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:31:24,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:31:24,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:31:24,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:31:24,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:31:24,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:31:24,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:31:24,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:31:24,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:31:24,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:31:24,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:31:24,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:31:24,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:31:24,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:31:24,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:31:24,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:31:24,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:31:24,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:31:24,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:31:24,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:31:24,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:31:24,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:31:24,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:31:24,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:31:24,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:31:24,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:31:24,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:31:24,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:31:24,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:31:24,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:31:24,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:31:24,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:31:24,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:31:24,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:31:24,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:31:24,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:31:24,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:31:24,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:31:24,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:31:24,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:31:24,490 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 21:31:24,514 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:31:24,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:31:24,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:31:24,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:31:24,518 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:31:24,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:31:24,519 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:31:24,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:31:24,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:31:24,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:31:24,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:31:24,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:31:24,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:31:24,520 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:31:24,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:31:24,520 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:31:24,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:31:24,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:31:24,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:31:24,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:31:24,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:31:24,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:31:24,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:31:24,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:31:24,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:31:24,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:31:24,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:31:24,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:31:24,525 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:31:24,806 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:31:24,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:31:24,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:31:24,831 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:31:24,832 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:31:24,832 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2019-11-06 21:31:24,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ead30b99/e46933cfe8ea45fdbbd30109ca9fe59e/FLAGe03a1e2ba [2019-11-06 21:31:25,576 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:31:25,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product30.cil.c [2019-11-06 21:31:25,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ead30b99/e46933cfe8ea45fdbbd30109ca9fe59e/FLAGe03a1e2ba [2019-11-06 21:31:25,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ead30b99/e46933cfe8ea45fdbbd30109ca9fe59e [2019-11-06 21:31:25,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:31:25,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:31:25,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:31:25,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:31:25,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:31:25,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:31:25" (1/1) ... [2019-11-06 21:31:25,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c419196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:25, skipping insertion in model container [2019-11-06 21:31:25,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:31:25" (1/1) ... [2019-11-06 21:31:25,773 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:31:25,865 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:31:26,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:31:26,639 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:31:26,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:31:26,908 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:31:26,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:26 WrapperNode [2019-11-06 21:31:26,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:31:26,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:31:26,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:31:26,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:31:26,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:26" (1/1) ... [2019-11-06 21:31:26,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:26" (1/1) ... [2019-11-06 21:31:26,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:26" (1/1) ... [2019-11-06 21:31:26,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:26" (1/1) ... [2019-11-06 21:31:27,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:26" (1/1) ... [2019-11-06 21:31:27,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:26" (1/1) ... [2019-11-06 21:31:27,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:26" (1/1) ... [2019-11-06 21:31:27,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:31:27,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:31:27,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:31:27,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:31:27,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:26" (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 21:31:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:31:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:31:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:31:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:31:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:31:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:31:27,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:31:27,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:31:27,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:31:27,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:31:27,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:31:27,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:31:27,176 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:31:27,176 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:31:27,176 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:31:27,176 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:31:27,177 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:31:27,177 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:31:27,177 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:31:27,177 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:31:27,178 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:31:27,178 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:31:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:31:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:31:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:31:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:31:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:31:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:31:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:31:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:31:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:31:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:31:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:31:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:31:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:31:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:31:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:31:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:31:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:31:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:31:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:31:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:31:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:31:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:31:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:31:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:31:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:31:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:31:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:31:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:31:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:31:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-06 21:31:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:31:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:31:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:31:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:31:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:31:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:31:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:31:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:31:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:31:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:31:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-06 21:31:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:31:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:31:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:31:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-06 21:31:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:31:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:31:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:31:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-11-06 21:31:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:31:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-11-06 21:31:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:31:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:31:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:31:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:31:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:31:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:31:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:31:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:31:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:31:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:31:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:31:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:31:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:31:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:31:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:31:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:31:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:31:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:31:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:31:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:31:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:31:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:31:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:31:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:31:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:31:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:31:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:31:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:31:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:31:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:31:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:31:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:31:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:31:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:31:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:31:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:31:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:31:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:31:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:31:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:31:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:31:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:31:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:31:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:31:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:31:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:31:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:31:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:31:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:31:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:31:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:31:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:31:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:31:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:31:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:31:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:31:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:31:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:31:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-06 21:31:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:31:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:31:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:31:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:31:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:31:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:31:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:31:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:31:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:31:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-06 21:31:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:31:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:31:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:31:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:31:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:31:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:31:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:31:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:31:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:31:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:31:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:31:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-06 21:31:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:31:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:31:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:31:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:31:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:31:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-06 21:31:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:31:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:31:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-06 21:31:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:31:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:31:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:31:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-11-06 21:31:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-06 21:31:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-11-06 21:31:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:31:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:31:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:31:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:31:29,483 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:31:29,483 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:31:29,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:31:29 BoogieIcfgContainer [2019-11-06 21:31:29,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:31:29,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:31:29,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:31:29,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:31:29,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:31:25" (1/3) ... [2019-11-06 21:31:29,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b1d371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:31:29, skipping insertion in model container [2019-11-06 21:31:29,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:31:26" (2/3) ... [2019-11-06 21:31:29,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b1d371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:31:29, skipping insertion in model container [2019-11-06 21:31:29,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:31:29" (3/3) ... [2019-11-06 21:31:29,496 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2019-11-06 21:31:29,506 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:31:29,517 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:31:29,528 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:31:29,575 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:31:29,575 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:31:29,575 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:31:29,575 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:31:29,575 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:31:29,576 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:31:29,576 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:31:29,576 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:31:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states. [2019-11-06 21:31:29,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-11-06 21:31:29,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:29,663 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:29,667 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:29,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:29,674 INFO L82 PathProgramCache]: Analyzing trace with hash -2022384104, now seen corresponding path program 1 times [2019-11-06 21:31:29,685 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:29,685 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028723078] [2019-11-06 21:31:29,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,326 WARN L191 SmtUtils]: Spent 950.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,636 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,874 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:32,168 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028723078] [2019-11-06 21:31:32,168 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062771483] [2019-11-06 21:31:32,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:32,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-06 21:31:32,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:31:32,861 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:32,861 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-11-06 21:31:32,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460027009] [2019-11-06 21:31:32,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:31:32,871 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:32,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:31:32,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:31:32,885 INFO L87 Difference]: Start difference. First operand 806 states. Second operand 2 states. [2019-11-06 21:31:32,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:32,962 INFO L93 Difference]: Finished difference Result 682 states and 1081 transitions. [2019-11-06 21:31:32,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:31:32,963 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 116 [2019-11-06 21:31:32,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:32,991 INFO L225 Difference]: With dead ends: 682 [2019-11-06 21:31:32,991 INFO L226 Difference]: Without dead ends: 645 [2019-11-06 21:31:32,996 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:31:33,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2019-11-06 21:31:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2019-11-06 21:31:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-11-06 21:31:33,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1026 transitions. [2019-11-06 21:31:33,111 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1026 transitions. Word has length 116 [2019-11-06 21:31:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:33,114 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 1026 transitions. [2019-11-06 21:31:33,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:31:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1026 transitions. [2019-11-06 21:31:33,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-06 21:31:33,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:33,125 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:33,329 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:33,336 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:33,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1798333227, now seen corresponding path program 1 times [2019-11-06 21:31:33,336 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:33,337 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006827701] [2019-11-06 21:31:33,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:34,452 WARN L191 SmtUtils]: Spent 920.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:34,774 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,026 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:35,263 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006827701] [2019-11-06 21:31:35,263 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213309806] [2019-11-06 21:31:35,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:35,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 3173 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:35,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:35,924 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:35,924 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:35,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040553031] [2019-11-06 21:31:35,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:35,926 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:35,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:35,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:35,927 INFO L87 Difference]: Start difference. First operand 645 states and 1026 transitions. Second operand 4 states. [2019-11-06 21:31:36,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:36,038 INFO L93 Difference]: Finished difference Result 1262 states and 2025 transitions. [2019-11-06 21:31:36,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:36,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-11-06 21:31:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:36,051 INFO L225 Difference]: With dead ends: 1262 [2019-11-06 21:31:36,051 INFO L226 Difference]: Without dead ends: 645 [2019-11-06 21:31:36,064 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:36,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2019-11-06 21:31:36,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2019-11-06 21:31:36,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-11-06 21:31:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1025 transitions. [2019-11-06 21:31:36,146 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1025 transitions. Word has length 118 [2019-11-06 21:31:36,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:36,147 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 1025 transitions. [2019-11-06 21:31:36,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:36,149 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1025 transitions. [2019-11-06 21:31:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-06 21:31:36,152 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:36,154 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:36,359 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:36,360 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:36,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:36,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2025770863, now seen corresponding path program 1 times [2019-11-06 21:31:36,361 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:36,361 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399546760] [2019-11-06 21:31:36,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,371 WARN L191 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,649 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,837 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:38,110 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399546760] [2019-11-06 21:31:38,111 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925643200] [2019-11-06 21:31:38,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:38,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:38,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:38,762 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:38,762 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:38,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329827476] [2019-11-06 21:31:38,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:38,764 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:38,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:38,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:38,764 INFO L87 Difference]: Start difference. First operand 645 states and 1025 transitions. Second operand 4 states. [2019-11-06 21:31:38,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:38,856 INFO L93 Difference]: Finished difference Result 1262 states and 2023 transitions. [2019-11-06 21:31:38,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:38,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-06 21:31:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:38,863 INFO L225 Difference]: With dead ends: 1262 [2019-11-06 21:31:38,863 INFO L226 Difference]: Without dead ends: 645 [2019-11-06 21:31:38,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:38,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2019-11-06 21:31:38,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 645. [2019-11-06 21:31:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-11-06 21:31:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1024 transitions. [2019-11-06 21:31:38,894 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1024 transitions. Word has length 120 [2019-11-06 21:31:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:38,894 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 1024 transitions. [2019-11-06 21:31:38,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1024 transitions. [2019-11-06 21:31:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-11-06 21:31:38,897 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:38,898 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:39,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:39,105 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:39,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1223604915, now seen corresponding path program 1 times [2019-11-06 21:31:39,105 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:39,106 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994040352] [2019-11-06 21:31:39,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,065 WARN L191 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,361 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,527 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:40,786 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994040352] [2019-11-06 21:31:40,786 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105704538] [2019-11-06 21:31:40,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:41,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 3177 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:41,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:41,385 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:41,386 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:41,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115608914] [2019-11-06 21:31:41,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:41,387 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:41,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:41,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:41,387 INFO L87 Difference]: Start difference. First operand 645 states and 1024 transitions. Second operand 4 states. [2019-11-06 21:31:41,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:41,473 INFO L93 Difference]: Finished difference Result 1269 states and 2030 transitions. [2019-11-06 21:31:41,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:41,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-11-06 21:31:41,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:41,478 INFO L225 Difference]: With dead ends: 1269 [2019-11-06 21:31:41,478 INFO L226 Difference]: Without dead ends: 654 [2019-11-06 21:31:41,482 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:41,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-11-06 21:31:41,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-11-06 21:31:41,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-11-06 21:31:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1036 transitions. [2019-11-06 21:31:41,508 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1036 transitions. Word has length 122 [2019-11-06 21:31:41,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:41,509 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 1036 transitions. [2019-11-06 21:31:41,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1036 transitions. [2019-11-06 21:31:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-11-06 21:31:41,511 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:41,511 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:41,723 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:41,724 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:41,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:41,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1957225257, now seen corresponding path program 1 times [2019-11-06 21:31:41,725 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:41,725 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582269974] [2019-11-06 21:31:41,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,705 WARN L191 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,150 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,385 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:43,652 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582269974] [2019-11-06 21:31:43,652 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839366721] [2019-11-06 21:31:43,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:44,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 3178 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:44,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:44,329 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:44,329 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:44,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065360333] [2019-11-06 21:31:44,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:44,334 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:44,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:44,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:44,335 INFO L87 Difference]: Start difference. First operand 654 states and 1036 transitions. Second operand 4 states. [2019-11-06 21:31:44,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:44,432 INFO L93 Difference]: Finished difference Result 1271 states and 2031 transitions. [2019-11-06 21:31:44,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:44,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2019-11-06 21:31:44,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:44,443 INFO L225 Difference]: With dead ends: 1271 [2019-11-06 21:31:44,443 INFO L226 Difference]: Without dead ends: 654 [2019-11-06 21:31:44,447 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-11-06 21:31:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-11-06 21:31:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-11-06 21:31:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1035 transitions. [2019-11-06 21:31:44,476 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1035 transitions. Word has length 123 [2019-11-06 21:31:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:44,477 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 1035 transitions. [2019-11-06 21:31:44,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1035 transitions. [2019-11-06 21:31:44,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-06 21:31:44,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:44,481 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:44,687 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:44,688 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:44,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:44,688 INFO L82 PathProgramCache]: Analyzing trace with hash 974787383, now seen corresponding path program 1 times [2019-11-06 21:31:44,689 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:44,689 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559800306] [2019-11-06 21:31:44,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,616 WARN L191 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:45,871 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,034 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-06 21:31:46,411 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559800306] [2019-11-06 21:31:46,411 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041253297] [2019-11-06 21:31:46,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:47,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:47,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:47,085 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:31:47,086 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:47,086 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:31:47,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278020892] [2019-11-06 21:31:47,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:47,088 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:47,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:47,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:31:47,089 INFO L87 Difference]: Start difference. First operand 654 states and 1035 transitions. Second operand 4 states. [2019-11-06 21:31:47,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:47,169 INFO L93 Difference]: Finished difference Result 1271 states and 2030 transitions. [2019-11-06 21:31:47,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:47,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-11-06 21:31:47,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:47,176 INFO L225 Difference]: With dead ends: 1271 [2019-11-06 21:31:47,176 INFO L226 Difference]: Without dead ends: 654 [2019-11-06 21:31:47,180 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:31:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-11-06 21:31:47,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-11-06 21:31:47,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-11-06 21:31:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1034 transitions. [2019-11-06 21:31:47,205 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1034 transitions. Word has length 124 [2019-11-06 21:31:47,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:47,207 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 1034 transitions. [2019-11-06 21:31:47,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:47,207 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1034 transitions. [2019-11-06 21:31:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-06 21:31:47,210 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:47,211 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:47,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:47,419 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:47,420 INFO L82 PathProgramCache]: Analyzing trace with hash 131398875, now seen corresponding path program 1 times [2019-11-06 21:31:47,420 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:47,421 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19752281] [2019-11-06 21:31:47,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,496 WARN L191 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:48,809 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,020 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:31:49,332 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19752281] [2019-11-06 21:31:49,332 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273170617] [2019-11-06 21:31:49,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:49,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:49,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:49,932 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:49,932 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-11-06 21:31:49,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648785744] [2019-11-06 21:31:49,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:49,933 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:49,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:49,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:31:49,934 INFO L87 Difference]: Start difference. First operand 654 states and 1034 transitions. Second operand 4 states. [2019-11-06 21:31:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:50,124 INFO L93 Difference]: Finished difference Result 1270 states and 2030 transitions. [2019-11-06 21:31:50,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:50,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2019-11-06 21:31:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:50,132 INFO L225 Difference]: With dead ends: 1270 [2019-11-06 21:31:50,132 INFO L226 Difference]: Without dead ends: 654 [2019-11-06 21:31:50,136 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:31:50,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-11-06 21:31:50,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-11-06 21:31:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-11-06 21:31:50,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1029 transitions. [2019-11-06 21:31:50,164 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1029 transitions. Word has length 125 [2019-11-06 21:31:50,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:50,165 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 1029 transitions. [2019-11-06 21:31:50,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1029 transitions. [2019-11-06 21:31:50,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-11-06 21:31:50,168 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:50,168 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:50,377 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:50,378 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:50,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:50,378 INFO L82 PathProgramCache]: Analyzing trace with hash 2025700873, now seen corresponding path program 1 times [2019-11-06 21:31:50,378 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:50,379 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586038480] [2019-11-06 21:31:50,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,417 WARN L191 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,700 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,884 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:31:52,262 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586038480] [2019-11-06 21:31:52,263 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615935604] [2019-11-06 21:31:52,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:52,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:52,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:52,871 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:52,871 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 19 [2019-11-06 21:31:52,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276014381] [2019-11-06 21:31:52,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:52,876 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:52,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:52,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2019-11-06 21:31:52,878 INFO L87 Difference]: Start difference. First operand 654 states and 1029 transitions. Second operand 4 states. [2019-11-06 21:31:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:53,030 INFO L93 Difference]: Finished difference Result 1270 states and 2020 transitions. [2019-11-06 21:31:53,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:31:53,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-11-06 21:31:53,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:53,035 INFO L225 Difference]: With dead ends: 1270 [2019-11-06 21:31:53,036 INFO L226 Difference]: Without dead ends: 654 [2019-11-06 21:31:53,039 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:31:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-11-06 21:31:53,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-11-06 21:31:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-11-06 21:31:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1024 transitions. [2019-11-06 21:31:53,061 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1024 transitions. Word has length 127 [2019-11-06 21:31:53,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:53,061 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 1024 transitions. [2019-11-06 21:31:53,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:53,061 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1024 transitions. [2019-11-06 21:31:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-06 21:31:53,063 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:53,064 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:53,280 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:53,281 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:53,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1647818991, now seen corresponding path program 1 times [2019-11-06 21:31:53,281 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:53,281 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455219510] [2019-11-06 21:31:53,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,242 WARN L191 SmtUtils]: Spent 856.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,536 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,716 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:31:55,108 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455219510] [2019-11-06 21:31:55,108 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841870417] [2019-11-06 21:31:55,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:55,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:55,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:55,733 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:55,733 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-11-06 21:31:55,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104532669] [2019-11-06 21:31:55,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:55,734 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:55,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:55,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:31:55,735 INFO L87 Difference]: Start difference. First operand 654 states and 1024 transitions. Second operand 4 states. [2019-11-06 21:31:55,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:55,928 INFO L93 Difference]: Finished difference Result 1306 states and 2069 transitions. [2019-11-06 21:31:55,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:55,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-11-06 21:31:55,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:55,933 INFO L225 Difference]: With dead ends: 1306 [2019-11-06 21:31:55,933 INFO L226 Difference]: Without dead ends: 693 [2019-11-06 21:31:55,937 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:31:55,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2019-11-06 21:31:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2019-11-06 21:31:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2019-11-06 21:31:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1088 transitions. [2019-11-06 21:31:55,976 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1088 transitions. Word has length 129 [2019-11-06 21:31:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:55,978 INFO L462 AbstractCegarLoop]: Abstraction has 693 states and 1088 transitions. [2019-11-06 21:31:55,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1088 transitions. [2019-11-06 21:31:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-06 21:31:55,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:55,983 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:31:56,198 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:56,199 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:56,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:56,199 INFO L82 PathProgramCache]: Analyzing trace with hash 999739231, now seen corresponding path program 1 times [2019-11-06 21:31:56,199 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:56,200 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546591992] [2019-11-06 21:31:56,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,342 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 397 [2019-11-06 21:31:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,616 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-11-06 21:31:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,849 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2019-11-06 21:31:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-06 21:31:58,293 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546591992] [2019-11-06 21:31:58,297 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234764768] [2019-11-06 21:31:58,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:31:58,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:31:58,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:31:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:31:58,886 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:31:58,886 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2019-11-06 21:31:58,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025035803] [2019-11-06 21:31:58,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:31:58,887 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:31:58,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:31:58,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:31:58,888 INFO L87 Difference]: Start difference. First operand 693 states and 1088 transitions. Second operand 4 states. [2019-11-06 21:31:59,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:31:59,140 INFO L93 Difference]: Finished difference Result 1309 states and 2072 transitions. [2019-11-06 21:31:59,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:31:59,141 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2019-11-06 21:31:59,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:31:59,149 INFO L225 Difference]: With dead ends: 1309 [2019-11-06 21:31:59,150 INFO L226 Difference]: Without dead ends: 693 [2019-11-06 21:31:59,155 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:31:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2019-11-06 21:31:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2019-11-06 21:31:59,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2019-11-06 21:31:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1083 transitions. [2019-11-06 21:31:59,184 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1083 transitions. Word has length 130 [2019-11-06 21:31:59,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:31:59,186 INFO L462 AbstractCegarLoop]: Abstraction has 693 states and 1083 transitions. [2019-11-06 21:31:59,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:31:59,186 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1083 transitions. [2019-11-06 21:31:59,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-06 21:31:59,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:31:59,190 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:31:59,399 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:31:59,399 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:31:59,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:31:59,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1612034594, now seen corresponding path program 1 times [2019-11-06 21:31:59,401 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:31:59,401 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383715822] [2019-11-06 21:31:59,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:31:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat