/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/minepump_spec2_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:58:36,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:58:36,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:58:36,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:58:36,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:58:36,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:58:36,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:58:36,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:58:36,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:58:36,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:58:36,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:58:36,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:58:36,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:58:36,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:58:36,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:58:36,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:58:36,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:58:36,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:58:36,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:58:36,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:58:36,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:58:36,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:58:36,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:58:36,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:58:36,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:58:36,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:58:36,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:58:36,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:58:36,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:58:36,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:58:36,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:58:36,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:58:36,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:58:36,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:58:36,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:58:36,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:58:36,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:58:36,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:58:36,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:58:36,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:58:36,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:58:36,667 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 21:58:36,688 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:58:36,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:58:36,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:58:36,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:58:36,690 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:58:36,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:58:36,691 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:58:36,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:58:36,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:58:36,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:58:36,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:58:36,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:58:36,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:58:36,692 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:58:36,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:58:36,693 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:58:36,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:58:36,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:58:36,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:58:36,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:58:36,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:58:36,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:58:36,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:58:36,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:58:36,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:58:36,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:58:36,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:58:36,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:58:36,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:58:36,966 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:58:36,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:58:36,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:58:36,989 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:58:36,989 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:58:36,990 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product52.cil.c [2019-11-06 21:58:37,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388e51d23/9a2d5466fce44cee9cf8cd69280bcebe/FLAG92ca1febc [2019-11-06 21:58:37,585 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:58:37,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product52.cil.c [2019-11-06 21:58:37,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388e51d23/9a2d5466fce44cee9cf8cd69280bcebe/FLAG92ca1febc [2019-11-06 21:58:37,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388e51d23/9a2d5466fce44cee9cf8cd69280bcebe [2019-11-06 21:58:37,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:58:37,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:58:37,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:58:37,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:58:37,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:58:37,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:37" (1/1) ... [2019-11-06 21:58:37,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79188b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:37, skipping insertion in model container [2019-11-06 21:58:37,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:37" (1/1) ... [2019-11-06 21:58:37,887 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:58:37,936 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:58:38,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:58:38,422 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:58:38,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:58:38,569 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:58:38,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:38 WrapperNode [2019-11-06 21:58:38,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:58:38,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:58:38,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:58:38,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:58:38,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:38" (1/1) ... [2019-11-06 21:58:38,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:38" (1/1) ... [2019-11-06 21:58:38,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:38" (1/1) ... [2019-11-06 21:58:38,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:38" (1/1) ... [2019-11-06 21:58:38,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:38" (1/1) ... [2019-11-06 21:58:38,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:38" (1/1) ... [2019-11-06 21:58:38,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:38" (1/1) ... [2019-11-06 21:58:38,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:58:38,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:58:38,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:58:38,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:58:38,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:38" (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 21:58:38,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:58:38,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:58:38,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:58:38,719 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:58:38,719 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:58:38,720 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 21:58:38,720 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:58:38,720 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 21:58:38,720 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 21:58:38,720 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 21:58:38,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 21:58:38,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 21:58:38,721 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 21:58:38,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 21:58:38,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 21:58:38,722 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 21:58:38,725 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 21:58:38,725 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:58:38,725 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:58:38,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:58:38,725 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:58:38,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:58:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:58:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:58:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:58:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:58:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:58:38,727 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:58:38,727 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 21:58:38,727 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 21:58:38,727 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 21:58:38,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 21:58:38,727 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 21:58:38,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 21:58:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 21:58:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 21:58:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:58:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:58:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:58:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:58:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:58:38,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:58:38,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:58:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:58:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:58:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:58:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 21:58:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 21:58:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 21:58:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 21:58:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:58:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:58:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:58:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 21:58:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 21:58:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 21:58:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 21:58:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 21:58:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 21:58:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 21:58:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 21:58:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 21:58:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:58:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 21:58:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 21:58:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 21:58:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:58:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 21:58:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 21:58:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:58:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:58:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:58:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:58:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:58:38,735 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:58:38,735 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:58:38,735 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:58:38,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:58:38,735 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:58:38,736 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:58:38,736 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 21:58:38,736 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:58:38,736 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:58:38,737 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:58:38,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:58:38,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:58:38,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:58:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:58:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:58:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:58:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:58:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:58:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:58:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:58:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:58:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:58:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:58:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:58:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:58:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:58:39,816 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:58:39,816 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:58:39,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:39 BoogieIcfgContainer [2019-11-06 21:58:39,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:58:39,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:58:39,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:58:39,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:58:39,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:37" (1/3) ... [2019-11-06 21:58:39,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f47726c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:39, skipping insertion in model container [2019-11-06 21:58:39,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:38" (2/3) ... [2019-11-06 21:58:39,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f47726c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:39, skipping insertion in model container [2019-11-06 21:58:39,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:39" (3/3) ... [2019-11-06 21:58:39,826 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product52.cil.c [2019-11-06 21:58:39,836 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:58:39,844 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:58:39,856 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:58:39,880 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:58:39,880 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:58:39,880 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:58:39,880 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:58:39,881 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:58:39,881 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:58:39,881 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:58:39,881 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:58:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-11-06 21:58:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 21:58:39,915 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:39,916 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:39,918 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:39,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:39,923 INFO L82 PathProgramCache]: Analyzing trace with hash 422856307, now seen corresponding path program 1 times [2019-11-06 21:58:39,933 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:39,933 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693884288] [2019-11-06 21:58:39,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:40,686 WARN L191 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:40,807 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693884288] [2019-11-06 21:58:40,808 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:40,808 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:58:40,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562247] [2019-11-06 21:58:40,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:58:40,816 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:40,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:58:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:58:40,833 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2019-11-06 21:58:42,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:42,060 INFO L93 Difference]: Finished difference Result 321 states and 418 transitions. [2019-11-06 21:58:42,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:58:42,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-06 21:58:42,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:42,077 INFO L225 Difference]: With dead ends: 321 [2019-11-06 21:58:42,077 INFO L226 Difference]: Without dead ends: 179 [2019-11-06 21:58:42,082 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:58:42,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2019-11-06 21:58:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 143. [2019-11-06 21:58:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-11-06 21:58:42,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2019-11-06 21:58:42,180 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 51 [2019-11-06 21:58:42,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:42,180 INFO L462 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2019-11-06 21:58:42,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:58:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2019-11-06 21:58:42,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 21:58:42,184 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:42,185 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:42,185 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:42,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:42,185 INFO L82 PathProgramCache]: Analyzing trace with hash 83135735, now seen corresponding path program 1 times [2019-11-06 21:58:42,186 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:42,186 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269008069] [2019-11-06 21:58:42,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:42,575 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:42,627 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269008069] [2019-11-06 21:58:42,628 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:42,628 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:58:42,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856509185] [2019-11-06 21:58:42,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:58:42,630 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:42,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:58:42,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:58:42,631 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 5 states. [2019-11-06 21:58:43,157 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:44,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:44,123 INFO L93 Difference]: Finished difference Result 256 states and 317 transitions. [2019-11-06 21:58:44,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:58:44,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-11-06 21:58:44,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:44,128 INFO L225 Difference]: With dead ends: 256 [2019-11-06 21:58:44,128 INFO L226 Difference]: Without dead ends: 169 [2019-11-06 21:58:44,130 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:58:44,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-11-06 21:58:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2019-11-06 21:58:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-11-06 21:58:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 156 transitions. [2019-11-06 21:58:44,168 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 156 transitions. Word has length 52 [2019-11-06 21:58:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:44,168 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 156 transitions. [2019-11-06 21:58:44,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:58:44,169 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 156 transitions. [2019-11-06 21:58:44,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 21:58:44,171 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:44,171 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:44,172 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:44,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:44,172 INFO L82 PathProgramCache]: Analyzing trace with hash 522733086, now seen corresponding path program 1 times [2019-11-06 21:58:44,172 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:44,172 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019778527] [2019-11-06 21:58:44,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:44,579 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:44,674 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019778527] [2019-11-06 21:58:44,674 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:44,674 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:58:44,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012516969] [2019-11-06 21:58:44,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:58:44,675 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:44,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:58:44,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:58:44,676 INFO L87 Difference]: Start difference. First operand 134 states and 156 transitions. Second operand 9 states. [2019-11-06 21:58:45,141 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:45,545 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:45,850 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:46,136 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:47,066 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:49,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:49,361 INFO L93 Difference]: Finished difference Result 454 states and 571 transitions. [2019-11-06 21:58:49,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:58:49,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-11-06 21:58:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:49,368 INFO L225 Difference]: With dead ends: 454 [2019-11-06 21:58:49,368 INFO L226 Difference]: Without dead ends: 348 [2019-11-06 21:58:49,370 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:58:49,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2019-11-06 21:58:49,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 279. [2019-11-06 21:58:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2019-11-06 21:58:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 338 transitions. [2019-11-06 21:58:49,442 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 338 transitions. Word has length 57 [2019-11-06 21:58:49,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:49,442 INFO L462 AbstractCegarLoop]: Abstraction has 279 states and 338 transitions. [2019-11-06 21:58:49,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:58:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 338 transitions. [2019-11-06 21:58:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-06 21:58:49,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:49,446 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:49,446 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:49,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:49,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1095308141, now seen corresponding path program 1 times [2019-11-06 21:58:49,447 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:49,447 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488654292] [2019-11-06 21:58:49,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:49,753 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:49,851 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488654292] [2019-11-06 21:58:49,851 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:49,851 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:58:49,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318559689] [2019-11-06 21:58:49,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:58:49,852 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:49,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:58:49,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:58:49,853 INFO L87 Difference]: Start difference. First operand 279 states and 338 transitions. Second operand 9 states. [2019-11-06 21:58:50,355 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:51,605 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:52,005 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:52,317 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:52,670 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:54,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:54,091 INFO L93 Difference]: Finished difference Result 894 states and 1182 transitions. [2019-11-06 21:58:54,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-06 21:58:54,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-11-06 21:58:54,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:54,098 INFO L225 Difference]: With dead ends: 894 [2019-11-06 21:58:54,098 INFO L226 Difference]: Without dead ends: 643 [2019-11-06 21:58:54,101 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:58:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-11-06 21:58:54,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 506. [2019-11-06 21:58:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2019-11-06 21:58:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 616 transitions. [2019-11-06 21:58:54,216 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 616 transitions. Word has length 62 [2019-11-06 21:58:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:54,217 INFO L462 AbstractCegarLoop]: Abstraction has 506 states and 616 transitions. [2019-11-06 21:58:54,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:58:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 616 transitions. [2019-11-06 21:58:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-06 21:58:54,220 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:54,220 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:54,220 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:54,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:54,221 INFO L82 PathProgramCache]: Analyzing trace with hash -656052983, now seen corresponding path program 1 times [2019-11-06 21:58:54,221 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:54,221 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971267882] [2019-11-06 21:58:54,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,532 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:54,629 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971267882] [2019-11-06 21:58:54,629 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:54,629 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:58:54,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693852335] [2019-11-06 21:58:54,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:58:54,630 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:54,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:58:54,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:58:54,631 INFO L87 Difference]: Start difference. First operand 506 states and 616 transitions. Second operand 10 states. [2019-11-06 21:58:55,150 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:56,275 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:56,567 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:56,898 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:57,551 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:58,941 INFO L93 Difference]: Finished difference Result 1413 states and 1930 transitions. [2019-11-06 21:58:58,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-06 21:58:58,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-11-06 21:58:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:58,950 INFO L225 Difference]: With dead ends: 1413 [2019-11-06 21:58:58,950 INFO L226 Difference]: Without dead ends: 935 [2019-11-06 21:58:58,952 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-11-06 21:58:58,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2019-11-06 21:58:59,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 729. [2019-11-06 21:58:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2019-11-06 21:58:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 883 transitions. [2019-11-06 21:58:59,103 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 883 transitions. Word has length 66 [2019-11-06 21:58:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:59,103 INFO L462 AbstractCegarLoop]: Abstraction has 729 states and 883 transitions. [2019-11-06 21:58:59,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:58:59,104 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 883 transitions. [2019-11-06 21:58:59,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 21:58:59,106 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:59,106 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:58:59,107 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:59,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:59,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1934115710, now seen corresponding path program 1 times [2019-11-06 21:58:59,107 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:59,108 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056034963] [2019-11-06 21:58:59,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,368 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:59,537 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056034963] [2019-11-06 21:58:59,538 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:59,539 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:58:59,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231737231] [2019-11-06 21:58:59,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:58:59,540 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:59,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:58:59,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:58:59,540 INFO L87 Difference]: Start difference. First operand 729 states and 883 transitions. Second operand 10 states. [2019-11-06 21:59:00,943 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:59:01,233 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 21:59:01,524 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:01,797 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:03,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:03,090 INFO L93 Difference]: Finished difference Result 1710 states and 2278 transitions. [2019-11-06 21:59:03,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:59:03,090 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-11-06 21:59:03,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:03,102 INFO L225 Difference]: With dead ends: 1710 [2019-11-06 21:59:03,102 INFO L226 Difference]: Without dead ends: 1009 [2019-11-06 21:59:03,105 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:59:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2019-11-06 21:59:03,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 755. [2019-11-06 21:59:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2019-11-06 21:59:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 911 transitions. [2019-11-06 21:59:03,299 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 911 transitions. Word has length 89 [2019-11-06 21:59:03,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:03,302 INFO L462 AbstractCegarLoop]: Abstraction has 755 states and 911 transitions. [2019-11-06 21:59:03,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:59:03,302 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 911 transitions. [2019-11-06 21:59:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 21:59:03,306 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:03,307 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:03,307 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:03,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1232515836, now seen corresponding path program 1 times [2019-11-06 21:59:03,307 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:03,308 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757910933] [2019-11-06 21:59:03,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,605 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:03,746 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757910933] [2019-11-06 21:59:03,746 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:03,747 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 21:59:03,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706722483] [2019-11-06 21:59:03,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:59:03,748 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:03,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:59:03,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:59:03,749 INFO L87 Difference]: Start difference. First operand 755 states and 911 transitions. Second operand 12 states. [2019-11-06 21:59:04,493 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:04,763 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:05,029 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:05,955 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:06,246 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:06,529 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:59:07,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:07,751 INFO L93 Difference]: Finished difference Result 1764 states and 2387 transitions. [2019-11-06 21:59:07,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:59:07,752 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-11-06 21:59:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:07,759 INFO L225 Difference]: With dead ends: 1764 [2019-11-06 21:59:07,760 INFO L226 Difference]: Without dead ends: 1037 [2019-11-06 21:59:07,763 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:59:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2019-11-06 21:59:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 771. [2019-11-06 21:59:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2019-11-06 21:59:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 927 transitions. [2019-11-06 21:59:07,916 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 927 transitions. Word has length 89 [2019-11-06 21:59:07,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:07,917 INFO L462 AbstractCegarLoop]: Abstraction has 771 states and 927 transitions. [2019-11-06 21:59:07,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:59:07,917 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 927 transitions. [2019-11-06 21:59:07,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 21:59:07,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:07,920 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:07,920 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:07,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:07,921 INFO L82 PathProgramCache]: Analyzing trace with hash 492965061, now seen corresponding path program 1 times [2019-11-06 21:59:07,921 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:07,922 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18451435] [2019-11-06 21:59:07,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,235 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:08,394 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18451435] [2019-11-06 21:59:08,394 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:08,395 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:59:08,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377277603] [2019-11-06 21:59:08,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:59:08,396 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:08,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:59:08,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:59:08,396 INFO L87 Difference]: Start difference. First operand 771 states and 927 transitions. Second operand 8 states. [2019-11-06 21:59:08,810 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:09,419 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:12,319 INFO L93 Difference]: Finished difference Result 2695 states and 3681 transitions. [2019-11-06 21:59:12,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-06 21:59:12,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-11-06 21:59:12,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:12,335 INFO L225 Difference]: With dead ends: 2695 [2019-11-06 21:59:12,335 INFO L226 Difference]: Without dead ends: 1952 [2019-11-06 21:59:12,339 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-11-06 21:59:12,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2019-11-06 21:59:12,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1595. [2019-11-06 21:59:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1595 states. [2019-11-06 21:59:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 1941 transitions. [2019-11-06 21:59:12,738 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 1941 transitions. Word has length 89 [2019-11-06 21:59:12,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:12,738 INFO L462 AbstractCegarLoop]: Abstraction has 1595 states and 1941 transitions. [2019-11-06 21:59:12,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:59:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 1941 transitions. [2019-11-06 21:59:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-06 21:59:12,742 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:12,742 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:12,742 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:12,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:12,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1931984341, now seen corresponding path program 1 times [2019-11-06 21:59:12,743 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:12,743 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831683363] [2019-11-06 21:59:12,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,043 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:59:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:59:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:59:13,139 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831683363] [2019-11-06 21:59:13,140 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:59:13,140 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:59:13,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992613905] [2019-11-06 21:59:13,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:59:13,141 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:59:13,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:59:13,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:59:13,141 INFO L87 Difference]: Start difference. First operand 1595 states and 1941 transitions. Second operand 8 states. [2019-11-06 21:59:13,586 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:59:16,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:59:16,524 INFO L93 Difference]: Finished difference Result 3247 states and 4460 transitions. [2019-11-06 21:59:16,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-06 21:59:16,525 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-11-06 21:59:16,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:59:16,546 INFO L225 Difference]: With dead ends: 3247 [2019-11-06 21:59:16,547 INFO L226 Difference]: Without dead ends: 3244 [2019-11-06 21:59:16,550 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2019-11-06 21:59:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2019-11-06 21:59:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 2638. [2019-11-06 21:59:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2638 states. [2019-11-06 21:59:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3287 transitions. [2019-11-06 21:59:17,090 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3287 transitions. Word has length 93 [2019-11-06 21:59:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:59:17,092 INFO L462 AbstractCegarLoop]: Abstraction has 2638 states and 3287 transitions. [2019-11-06 21:59:17,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:59:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3287 transitions. [2019-11-06 21:59:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-06 21:59:17,101 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:59:17,102 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:59:17,102 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:59:17,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:59:17,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1136892173, now seen corresponding path program 1 times [2019-11-06 21:59:17,103 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:59:17,103 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438639925] [2019-11-06 21:59:17,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:59:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat