/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_spec13_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:28:05,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:28:05,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:28:05,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:28:05,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:28:05,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:28:05,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:28:05,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:28:05,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:28:05,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:28:05,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:28:05,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:28:05,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:28:05,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:28:05,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:28:05,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:28:05,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:28:05,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:28:05,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:28:05,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:28:05,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:28:05,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:28:05,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:28:05,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:28:05,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:28:05,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:28:05,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:28:05,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:28:05,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:28:05,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:28:05,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:28:05,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:28:05,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:28:05,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:28:05,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:28:05,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:28:05,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:28:05,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:28:05,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:28:05,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:28:05,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:28:05,887 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 21:28:05,901 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:28:05,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:28:05,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:28:05,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:28:05,903 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:28:05,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:28:05,904 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:28:05,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:28:05,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:28:05,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:28:05,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:28:05,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:28:05,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:28:05,905 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:28:05,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:28:05,905 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:28:05,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:28:05,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:28:05,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:28:05,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:28:05,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:28:05,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:28:05,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:28:05,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:28:05,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:28:05,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:28:05,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:28:05,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:28:05,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:28:06,174 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:28:06,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:28:06,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:28:06,194 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:28:06,195 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:28:06,196 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2019-11-06 21:28:06,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3fb6b74/a82df9ca97a0400a8820895da1bc8254/FLAGd6270bab0 [2019-11-06 21:28:06,841 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:28:06,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product21.cil.c [2019-11-06 21:28:06,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3fb6b74/a82df9ca97a0400a8820895da1bc8254/FLAGd6270bab0 [2019-11-06 21:28:07,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea3fb6b74/a82df9ca97a0400a8820895da1bc8254 [2019-11-06 21:28:07,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:28:07,127 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:28:07,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:28:07,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:28:07,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:28:07,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:28:07" (1/1) ... [2019-11-06 21:28:07,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7c87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:07, skipping insertion in model container [2019-11-06 21:28:07,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:28:07" (1/1) ... [2019-11-06 21:28:07,146 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:28:07,232 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:28:07,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:28:07,990 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:28:08,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:28:08,167 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:28:08,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:08 WrapperNode [2019-11-06 21:28:08,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:28:08,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:28:08,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:28:08,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:28:08,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:08" (1/1) ... [2019-11-06 21:28:08,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:08" (1/1) ... [2019-11-06 21:28:08,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:08" (1/1) ... [2019-11-06 21:28:08,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:08" (1/1) ... [2019-11-06 21:28:08,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:08" (1/1) ... [2019-11-06 21:28:08,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:08" (1/1) ... [2019-11-06 21:28:08,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:08" (1/1) ... [2019-11-06 21:28:08,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:28:08,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:28:08,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:28:08,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:28:08,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:08" (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 21:28:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:28:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:28:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:28:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-06 21:28:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-06 21:28:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-06 21:28:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-06 21:28:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-06 21:28:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-06 21:28:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-06 21:28:08,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-06 21:28:08,474 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:28:08,474 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:28:08,475 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:28:08,476 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:28:08,476 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-06 21:28:08,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-06 21:28:08,478 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-06 21:28:08,479 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-06 21:28:08,479 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-06 21:28:08,479 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-06 21:28:08,479 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-06 21:28:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-06 21:28:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-06 21:28:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-06 21:28:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-06 21:28:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:28:08,481 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-06 21:28:08,481 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-06 21:28:08,481 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-06 21:28:08,481 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:28:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-06 21:28:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:28:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:28:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:28:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-06 21:28:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-06 21:28:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-06 21:28:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-06 21:28:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-06 21:28:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-06 21:28:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-06 21:28:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-06 21:28:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-06 21:28:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-06 21:28:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-06 21:28:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-06 21:28:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-06 21:28:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-06 21:28:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-06 21:28:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-06 21:28:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-06 21:28:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-06 21:28:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-06 21:28:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-06 21:28:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-06 21:28:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-06 21:28:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-06 21:28:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-06 21:28:08,488 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:28:08,488 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-06 21:28:08,488 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-06 21:28:08,488 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-06 21:28:08,489 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-06 21:28:08,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:28:08,489 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:28:08,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-11-06 21:28:08,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-11-06 21:28:08,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:28:08,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:28:08,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:28:08,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:28:08,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:28:08,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:28:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:28:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:28:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-06 21:28:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-06 21:28:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-06 21:28:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-06 21:28:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-06 21:28:08,493 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-06 21:28:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-06 21:28:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-06 21:28:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:28:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:28:08,494 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:28:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:28:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-06 21:28:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-06 21:28:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-06 21:28:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:28:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-06 21:28:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-06 21:28:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-06 21:28:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-06 21:28:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-06 21:28:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-06 21:28:08,498 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-06 21:28:08,498 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:28:08,498 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-06 21:28:08,498 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-06 21:28:08,498 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-06 21:28:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:28:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-06 21:28:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-06 21:28:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-06 21:28:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-06 21:28:08,499 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-06 21:28:08,500 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:28:08,500 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-06 21:28:08,500 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:28:08,500 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:28:08,500 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:28:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:28:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:28:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-06 21:28:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-06 21:28:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-06 21:28:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-06 21:28:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-06 21:28:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-06 21:28:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-06 21:28:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-06 21:28:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-06 21:28:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-06 21:28:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-06 21:28:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-06 21:28:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-06 21:28:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-06 21:28:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-06 21:28:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-06 21:28:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-06 21:28:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-06 21:28:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-06 21:28:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-06 21:28:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-06 21:28:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-11-06 21:28:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-11-06 21:28:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:28:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-06 21:28:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-06 21:28:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-06 21:28:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:28:08,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:28:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:28:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:28:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:28:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:28:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:28:08,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:28:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:28:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:28:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:28:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:28:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:28:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:28:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:28:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:28:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:28:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:28:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:28:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:28:10,939 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:28:10,940 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 21:28:10,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:28:10 BoogieIcfgContainer [2019-11-06 21:28:10,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:28:10,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:28:10,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:28:10,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:28:10,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:28:07" (1/3) ... [2019-11-06 21:28:10,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150eeb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:28:10, skipping insertion in model container [2019-11-06 21:28:10,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:28:08" (2/3) ... [2019-11-06 21:28:10,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150eeb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:28:10, skipping insertion in model container [2019-11-06 21:28:10,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:28:10" (3/3) ... [2019-11-06 21:28:10,951 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2019-11-06 21:28:10,962 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:28:10,973 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:28:10,987 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:28:11,022 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:28:11,022 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:28:11,023 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:28:11,023 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:28:11,023 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:28:11,023 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:28:11,023 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:28:11,023 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:28:11,062 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states. [2019-11-06 21:28:11,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-11-06 21:28:11,093 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:11,095 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:28:11,097 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:11,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:11,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1684388016, now seen corresponding path program 1 times [2019-11-06 21:28:11,114 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:11,115 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195199205] [2019-11-06 21:28:11,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:12,732 WARN L191 SmtUtils]: Spent 994.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:12,980 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-06 21:28:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-06 21:28:13,304 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195199205] [2019-11-06 21:28:13,305 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005077581] [2019-11-06 21:28:13,305 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 21:28:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:13,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:13,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:28:13,992 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:13,992 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-11-06 21:28:13,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486126627] [2019-11-06 21:28:14,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:14,000 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:14,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:14,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:28:14,018 INFO L87 Difference]: Start difference. First operand 788 states. Second operand 4 states. [2019-11-06 21:28:14,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:14,236 INFO L93 Difference]: Finished difference Result 1291 states and 2100 transitions. [2019-11-06 21:28:14,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:14,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-11-06 21:28:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:14,271 INFO L225 Difference]: With dead ends: 1291 [2019-11-06 21:28:14,272 INFO L226 Difference]: Without dead ends: 651 [2019-11-06 21:28:14,282 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:28:14,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-11-06 21:28:14,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-11-06 21:28:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-11-06 21:28:14,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1038 transitions. [2019-11-06 21:28:14,431 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1038 transitions. Word has length 152 [2019-11-06 21:28:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:14,431 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1038 transitions. [2019-11-06 21:28:14,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1038 transitions. [2019-11-06 21:28:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-06 21:28:14,444 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:14,444 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, 1, 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 21:28:14,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:14,663 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:14,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:14,664 INFO L82 PathProgramCache]: Analyzing trace with hash 940432692, now seen corresponding path program 1 times [2019-11-06 21:28:14,664 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:14,665 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875928427] [2019-11-06 21:28:14,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,721 WARN L191 SmtUtils]: Spent 870.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 21:28:16,066 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875928427] [2019-11-06 21:28:16,066 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37868314] [2019-11-06 21:28:16,066 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 21:28:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:16,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:16,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:28:16,745 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:16,745 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:28:16,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922481679] [2019-11-06 21:28:16,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:16,747 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:16,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:16,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:16,748 INFO L87 Difference]: Start difference. First operand 651 states and 1038 transitions. Second operand 4 states. [2019-11-06 21:28:17,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:17,040 INFO L93 Difference]: Finished difference Result 1313 states and 2123 transitions. [2019-11-06 21:28:17,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:17,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2019-11-06 21:28:17,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:17,050 INFO L225 Difference]: With dead ends: 1313 [2019-11-06 21:28:17,050 INFO L226 Difference]: Without dead ends: 690 [2019-11-06 21:28:17,055 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:28:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2019-11-06 21:28:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2019-11-06 21:28:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-11-06 21:28:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1112 transitions. [2019-11-06 21:28:17,140 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1112 transitions. Word has length 154 [2019-11-06 21:28:17,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:17,142 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 1112 transitions. [2019-11-06 21:28:17,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:17,143 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1112 transitions. [2019-11-06 21:28:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-06 21:28:17,157 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:17,158 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:28:17,366 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:17,366 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:17,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:17,367 INFO L82 PathProgramCache]: Analyzing trace with hash 723677314, now seen corresponding path program 1 times [2019-11-06 21:28:17,368 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:17,368 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62226881] [2019-11-06 21:28:17,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,312 WARN L191 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-06 21:28:18,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62226881] [2019-11-06 21:28:18,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977714475] [2019-11-06 21:28:18,774 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 21:28:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:19,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:28:19,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:28:19,456 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:19,456 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 14 [2019-11-06 21:28:19,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128108188] [2019-11-06 21:28:19,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:28:19,459 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:19,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:28:19,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:28:19,460 INFO L87 Difference]: Start difference. First operand 690 states and 1112 transitions. Second operand 7 states. [2019-11-06 21:28:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:19,675 INFO L93 Difference]: Finished difference Result 1366 states and 2214 transitions. [2019-11-06 21:28:19,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:28:19,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2019-11-06 21:28:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:19,684 INFO L225 Difference]: With dead ends: 1366 [2019-11-06 21:28:19,685 INFO L226 Difference]: Without dead ends: 704 [2019-11-06 21:28:19,689 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:28:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2019-11-06 21:28:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 697. [2019-11-06 21:28:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2019-11-06 21:28:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1123 transitions. [2019-11-06 21:28:19,744 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1123 transitions. Word has length 156 [2019-11-06 21:28:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:19,745 INFO L462 AbstractCegarLoop]: Abstraction has 697 states and 1123 transitions. [2019-11-06 21:28:19,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:28:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1123 transitions. [2019-11-06 21:28:19,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-06 21:28:19,752 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:19,756 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, 1, 1, 1, 1, 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 21:28:19,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:19,964 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:19,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:19,964 INFO L82 PathProgramCache]: Analyzing trace with hash -336665820, now seen corresponding path program 1 times [2019-11-06 21:28:19,964 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:19,965 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325195541] [2019-11-06 21:28:19,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,045 WARN L191 SmtUtils]: Spent 964.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:28:21,422 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325195541] [2019-11-06 21:28:21,422 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992155617] [2019-11-06 21:28:21,422 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 21:28:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:22,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:22,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-06 21:28:22,187 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:22,188 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:28:22,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602762669] [2019-11-06 21:28:22,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:22,189 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:22,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:22,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:22,190 INFO L87 Difference]: Start difference. First operand 697 states and 1123 transitions. Second operand 4 states. [2019-11-06 21:28:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:22,331 INFO L93 Difference]: Finished difference Result 1379 states and 2234 transitions. [2019-11-06 21:28:22,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:22,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2019-11-06 21:28:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:22,337 INFO L225 Difference]: With dead ends: 1379 [2019-11-06 21:28:22,337 INFO L226 Difference]: Without dead ends: 708 [2019-11-06 21:28:22,341 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:28:22,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-11-06 21:28:22,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2019-11-06 21:28:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-11-06 21:28:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1131 transitions. [2019-11-06 21:28:22,370 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1131 transitions. Word has length 157 [2019-11-06 21:28:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:22,371 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 1131 transitions. [2019-11-06 21:28:22,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1131 transitions. [2019-11-06 21:28:22,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-11-06 21:28:22,376 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:22,377 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, 1, 1, 1, 1, 1, 1, 1, 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 21:28:22,583 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:22,583 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:22,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:22,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1075846183, now seen corresponding path program 1 times [2019-11-06 21:28:22,584 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:22,585 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146007154] [2019-11-06 21:28:22,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,620 WARN L191 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:28:23,965 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146007154] [2019-11-06 21:28:23,966 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773864792] [2019-11-06 21:28:23,966 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 21:28:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:24,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:24,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 21:28:24,851 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:24,851 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:28:24,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766378128] [2019-11-06 21:28:24,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:24,852 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:24,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:24,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:24,853 INFO L87 Difference]: Start difference. First operand 706 states and 1131 transitions. Second operand 4 states. [2019-11-06 21:28:24,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:24,942 INFO L93 Difference]: Finished difference Result 1359 states and 2195 transitions. [2019-11-06 21:28:24,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:24,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-11-06 21:28:24,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:24,948 INFO L225 Difference]: With dead ends: 1359 [2019-11-06 21:28:24,949 INFO L226 Difference]: Without dead ends: 706 [2019-11-06 21:28:24,953 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:28:24,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2019-11-06 21:28:24,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2019-11-06 21:28:24,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-11-06 21:28:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1126 transitions. [2019-11-06 21:28:24,981 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1126 transitions. Word has length 160 [2019-11-06 21:28:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:24,981 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 1126 transitions. [2019-11-06 21:28:24,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:24,982 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1126 transitions. [2019-11-06 21:28:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-06 21:28:24,988 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:24,988 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:28:25,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:25,195 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:25,196 INFO L82 PathProgramCache]: Analyzing trace with hash 272976111, now seen corresponding path program 1 times [2019-11-06 21:28:25,196 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:25,196 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891420013] [2019-11-06 21:28:25,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,022 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:28:26,392 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891420013] [2019-11-06 21:28:26,392 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754812690] [2019-11-06 21:28:26,392 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 21:28:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:26,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 2989 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:26,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-06 21:28:27,012 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:27,012 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:28:27,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376501437] [2019-11-06 21:28:27,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:27,014 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:27,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:27,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:27,015 INFO L87 Difference]: Start difference. First operand 706 states and 1126 transitions. Second operand 4 states. [2019-11-06 21:28:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:27,243 INFO L93 Difference]: Finished difference Result 1355 states and 2186 transitions. [2019-11-06 21:28:27,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:27,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2019-11-06 21:28:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:27,254 INFO L225 Difference]: With dead ends: 1355 [2019-11-06 21:28:27,254 INFO L226 Difference]: Without dead ends: 748 [2019-11-06 21:28:27,258 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:28:27,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2019-11-06 21:28:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 745. [2019-11-06 21:28:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2019-11-06 21:28:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1199 transitions. [2019-11-06 21:28:27,289 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1199 transitions. Word has length 161 [2019-11-06 21:28:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:27,290 INFO L462 AbstractCegarLoop]: Abstraction has 745 states and 1199 transitions. [2019-11-06 21:28:27,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1199 transitions. [2019-11-06 21:28:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-06 21:28:27,295 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:27,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:28:27,506 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:27,506 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:27,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:27,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1911239619, now seen corresponding path program 1 times [2019-11-06 21:28:27,507 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:27,507 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383681010] [2019-11-06 21:28:27,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,360 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:28:28,747 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383681010] [2019-11-06 21:28:28,747 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904244040] [2019-11-06 21:28:28,747 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 21:28:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:29,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:28:29,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 21:28:29,508 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:29,508 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2019-11-06 21:28:29,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956332882] [2019-11-06 21:28:29,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:28:29,510 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:29,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:28:29,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:28:29,515 INFO L87 Difference]: Start difference. First operand 745 states and 1199 transitions. Second operand 7 states. [2019-11-06 21:28:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:29,680 INFO L93 Difference]: Finished difference Result 1366 states and 2198 transitions. [2019-11-06 21:28:29,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:28:29,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2019-11-06 21:28:29,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:29,688 INFO L225 Difference]: With dead ends: 1366 [2019-11-06 21:28:29,688 INFO L226 Difference]: Without dead ends: 759 [2019-11-06 21:28:29,692 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:28:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-11-06 21:28:29,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 752. [2019-11-06 21:28:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2019-11-06 21:28:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1208 transitions. [2019-11-06 21:28:29,720 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1208 transitions. Word has length 162 [2019-11-06 21:28:29,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:29,721 INFO L462 AbstractCegarLoop]: Abstraction has 752 states and 1208 transitions. [2019-11-06 21:28:29,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:28:29,721 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1208 transitions. [2019-11-06 21:28:29,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-06 21:28:29,726 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:29,726 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:28:29,933 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:29,933 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:29,934 INFO L82 PathProgramCache]: Analyzing trace with hash 275265615, now seen corresponding path program 1 times [2019-11-06 21:28:29,934 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:29,934 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20899856] [2019-11-06 21:28:29,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:30,796 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:30,974 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-06 21:28:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:28:31,161 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20899856] [2019-11-06 21:28:31,161 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022069748] [2019-11-06 21:28:31,161 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 21:28:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:31,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 21:28:31,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-06 21:28:31,746 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:31,746 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-11-06 21:28:31,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576754427] [2019-11-06 21:28:31,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:31,747 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:31,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:31,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:28:31,747 INFO L87 Difference]: Start difference. First operand 752 states and 1208 transitions. Second operand 4 states. [2019-11-06 21:28:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:31,851 INFO L93 Difference]: Finished difference Result 1411 states and 2278 transitions. [2019-11-06 21:28:31,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:28:31,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2019-11-06 21:28:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:31,858 INFO L225 Difference]: With dead ends: 1411 [2019-11-06 21:28:31,858 INFO L226 Difference]: Without dead ends: 752 [2019-11-06 21:28:31,862 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:28:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-11-06 21:28:31,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2019-11-06 21:28:31,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2019-11-06 21:28:31,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1205 transitions. [2019-11-06 21:28:31,890 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1205 transitions. Word has length 163 [2019-11-06 21:28:31,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:31,890 INFO L462 AbstractCegarLoop]: Abstraction has 752 states and 1205 transitions. [2019-11-06 21:28:31,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1205 transitions. [2019-11-06 21:28:31,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-06 21:28:31,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:31,896 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:28:32,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:32,104 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:32,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:32,104 INFO L82 PathProgramCache]: Analyzing trace with hash -316063958, now seen corresponding path program 1 times [2019-11-06 21:28:32,105 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:32,105 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520280343] [2019-11-06 21:28:32,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,954 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,091 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-06 21:28:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-06 21:28:33,337 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520280343] [2019-11-06 21:28:33,338 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45307794] [2019-11-06 21:28:33,338 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 21:28:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:33,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-06 21:28:33,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-06 21:28:33,923 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:33,923 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 9 [2019-11-06 21:28:33,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626406124] [2019-11-06 21:28:33,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:28:33,924 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:33,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:28:33,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:28:33,924 INFO L87 Difference]: Start difference. First operand 752 states and 1205 transitions. Second operand 4 states. [2019-11-06 21:28:34,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:34,021 INFO L93 Difference]: Finished difference Result 1463 states and 2366 transitions. [2019-11-06 21:28:34,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:28:34,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2019-11-06 21:28:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:34,028 INFO L225 Difference]: With dead ends: 1463 [2019-11-06 21:28:34,029 INFO L226 Difference]: Without dead ends: 735 [2019-11-06 21:28:34,032 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:28:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2019-11-06 21:28:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2019-11-06 21:28:34,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2019-11-06 21:28:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1176 transitions. [2019-11-06 21:28:34,055 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1176 transitions. Word has length 165 [2019-11-06 21:28:34,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:34,055 INFO L462 AbstractCegarLoop]: Abstraction has 735 states and 1176 transitions. [2019-11-06 21:28:34,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:28:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1176 transitions. [2019-11-06 21:28:34,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-06 21:28:34,060 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:34,061 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:28:34,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:34,268 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:34,269 INFO L82 PathProgramCache]: Analyzing trace with hash 702741203, now seen corresponding path program 1 times [2019-11-06 21:28:34,269 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:34,269 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125724815] [2019-11-06 21:28:34,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,285 WARN L191 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,436 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-06 21:28:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:28:35,769 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125724815] [2019-11-06 21:28:35,769 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146473502] [2019-11-06 21:28:35,769 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 21:28:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:36,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:28:36,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:28:36,329 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:36,329 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 15 [2019-11-06 21:28:36,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748752575] [2019-11-06 21:28:36,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:28:36,331 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:36,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:28:36,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:28:36,332 INFO L87 Difference]: Start difference. First operand 735 states and 1176 transitions. Second operand 7 states. [2019-11-06 21:28:36,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:36,474 INFO L93 Difference]: Finished difference Result 1418 states and 2274 transitions. [2019-11-06 21:28:36,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:28:36,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2019-11-06 21:28:36,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:36,480 INFO L225 Difference]: With dead ends: 1418 [2019-11-06 21:28:36,480 INFO L226 Difference]: Without dead ends: 737 [2019-11-06 21:28:36,484 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:28:36,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-11-06 21:28:36,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 729. [2019-11-06 21:28:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2019-11-06 21:28:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1162 transitions. [2019-11-06 21:28:36,509 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1162 transitions. Word has length 162 [2019-11-06 21:28:36,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:36,509 INFO L462 AbstractCegarLoop]: Abstraction has 729 states and 1162 transitions. [2019-11-06 21:28:36,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:28:36,510 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1162 transitions. [2019-11-06 21:28:36,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-06 21:28:36,515 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:36,515 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:28:36,723 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:36,723 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:36,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:36,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1210154117, now seen corresponding path program 1 times [2019-11-06 21:28:36,724 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:36,724 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665589904] [2019-11-06 21:28:36,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,485 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:28:37,906 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665589904] [2019-11-06 21:28:37,906 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792988948] [2019-11-06 21:28:37,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:38,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-06 21:28:38,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:28:38,622 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:38,622 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 15 [2019-11-06 21:28:38,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261446774] [2019-11-06 21:28:38,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:28:38,624 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:38,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:28:38,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:28:38,624 INFO L87 Difference]: Start difference. First operand 729 states and 1162 transitions. Second operand 7 states. [2019-11-06 21:28:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:38,816 INFO L93 Difference]: Finished difference Result 1412 states and 2259 transitions. [2019-11-06 21:28:38,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:28:38,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2019-11-06 21:28:38,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:38,823 INFO L225 Difference]: With dead ends: 1412 [2019-11-06 21:28:38,823 INFO L226 Difference]: Without dead ends: 731 [2019-11-06 21:28:38,827 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:28:38,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2019-11-06 21:28:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 723. [2019-11-06 21:28:38,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2019-11-06 21:28:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1148 transitions. [2019-11-06 21:28:38,866 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1148 transitions. Word has length 163 [2019-11-06 21:28:38,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:38,867 INFO L462 AbstractCegarLoop]: Abstraction has 723 states and 1148 transitions. [2019-11-06 21:28:38,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:28:38,867 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1148 transitions. [2019-11-06 21:28:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-06 21:28:38,873 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:38,874 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:28:39,082 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:39,082 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:39,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:39,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1856385415, now seen corresponding path program 1 times [2019-11-06 21:28:39,083 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:39,083 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132957171] [2019-11-06 21:28:39,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:28:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,898 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2019-11-06 21:28:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-06 21:28:40,348 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132957171] [2019-11-06 21:28:40,348 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49694740] [2019-11-06 21:28:40,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:28:40,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:28:40,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:28:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:28:41,186 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:28:41,186 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 17 [2019-11-06 21:28:41,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407380380] [2019-11-06 21:28:41,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:28:41,187 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:28:41,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:28:41,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2019-11-06 21:28:41,188 INFO L87 Difference]: Start difference. First operand 723 states and 1148 transitions. Second operand 9 states. [2019-11-06 21:28:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:28:41,431 INFO L93 Difference]: Finished difference Result 1406 states and 2246 transitions. [2019-11-06 21:28:41,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:28:41,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2019-11-06 21:28:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:28:41,438 INFO L225 Difference]: With dead ends: 1406 [2019-11-06 21:28:41,438 INFO L226 Difference]: Without dead ends: 732 [2019-11-06 21:28:41,442 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2019-11-06 21:28:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-11-06 21:28:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 725. [2019-11-06 21:28:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2019-11-06 21:28:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1152 transitions. [2019-11-06 21:28:41,465 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1152 transitions. Word has length 163 [2019-11-06 21:28:41,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:28:41,465 INFO L462 AbstractCegarLoop]: Abstraction has 725 states and 1152 transitions. [2019-11-06 21:28:41,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:28:41,466 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1152 transitions. [2019-11-06 21:28:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-06 21:28:41,471 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:28:41,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:28:41,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:28:41,678 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:28:41,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:28:41,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1306761489, now seen corresponding path program 1 times [2019-11-06 21:28:41,679 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:28:41,679 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850960363] [2019-11-06 21:28:41,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY