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_spec5_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:08:01,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:08:01,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:08:01,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:08:01,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:08:01,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:08:01,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:08:01,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:08:01,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:08:01,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:08:01,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:08:01,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:08:01,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:08:01,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:08:01,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:08:01,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:08:01,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:08:01,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:08:01,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:08:01,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:08:01,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:08:01,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:08:01,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:08:01,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:08:01,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:08:01,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:08:01,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:08:01,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:08:01,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:08:01,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:08:01,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:08:01,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:08:01,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:08:01,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:08:01,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:08:01,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:08:01,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:08:01,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:08:01,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:08:01,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:08:01,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:08:01,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 13:08:01,735 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:08:01,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:08:01,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:08:01,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:08:01,737 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:08:01,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:08:01,738 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:08:01,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:08:01,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:08:01,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:08:01,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:08:01,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:08:01,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:08:01,739 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:08:01,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:08:01,743 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:08:01,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:08:01,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:08:01,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:08:01,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:08:01,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:08:01,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:08:01,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:08:01,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:08:01,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:08:01,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:08:01,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:08:01,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:08:01,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:08:01,791 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:08:01,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:08:01,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:08:01,812 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:08:01,812 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:08:01,813 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2019-09-20 13:08:01,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/079cd19b3/fac08d37c4bf4bd9a1bb25447badfb14/FLAG33439e869 [2019-09-20 13:08:02,438 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:08:02,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2019-09-20 13:08:02,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/079cd19b3/fac08d37c4bf4bd9a1bb25447badfb14/FLAG33439e869 [2019-09-20 13:08:02,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/079cd19b3/fac08d37c4bf4bd9a1bb25447badfb14 [2019-09-20 13:08:02,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:08:02,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:08:02,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:02,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:08:02,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:08:02,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:02" (1/1) ... [2019-09-20 13:08:02,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d534b78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:02, skipping insertion in model container [2019-09-20 13:08:02,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:02" (1/1) ... [2019-09-20 13:08:02,779 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:08:02,825 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:08:03,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:03,276 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:08:03,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:03,454 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:08:03,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:03 WrapperNode [2019-09-20 13:08:03,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:03,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:08:03,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:08:03,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:08:03,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:03" (1/1) ... [2019-09-20 13:08:03,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:03" (1/1) ... [2019-09-20 13:08:03,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:03" (1/1) ... [2019-09-20 13:08:03,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:03" (1/1) ... [2019-09-20 13:08:03,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:03" (1/1) ... [2019-09-20 13:08:03,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:03" (1/1) ... [2019-09-20 13:08:03,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:03" (1/1) ... [2019-09-20 13:08:03,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:08:03,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:08:03,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:08:03,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:08:03,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:08:03,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:08:03,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:08:03,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:03,612 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:08:03,612 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:08:03,612 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:08:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:08:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:08:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:08:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:08:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:08:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:08:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:08:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:08:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:08:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:08:03,614 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:08:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:08:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:08:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:08:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:08:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:08:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:08:03,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:08:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:08:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:03,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:08:03,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:08:03,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:08:03,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:08:03,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:03,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:03,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:03,617 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:08:03,618 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:08:03,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:08:03,618 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:08:03,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:08:03,618 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:08:03,618 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:08:03,618 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:08:03,619 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:08:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:08:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:08:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:08:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:08:03,619 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:08:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:08:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:08:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:08:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:08:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:08:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:08:03,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:08:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:08:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:08:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:08:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:08:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:08:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:08:03,621 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:08:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:08:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:08:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:08:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:08:03,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:08:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:08:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:08:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:08:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:08:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:08:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:08:03,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:08:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:08:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:08:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:08:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:03,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:08:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:08:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:08:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:08:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:08:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:08:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:08:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:08:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:08:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:08:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:08:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:08:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:08:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:08:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:08:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:08:03,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:08:04,638 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:08:04,639 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:08:04,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:04 BoogieIcfgContainer [2019-09-20 13:08:04,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:08:04,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:08:04,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:08:04,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:08:04,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:08:02" (1/3) ... [2019-09-20 13:08:04,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182a6427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:04, skipping insertion in model container [2019-09-20 13:08:04,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:03" (2/3) ... [2019-09-20 13:08:04,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182a6427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:04, skipping insertion in model container [2019-09-20 13:08:04,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:04" (3/3) ... [2019-09-20 13:08:04,648 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2019-09-20 13:08:04,658 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:08:04,666 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:08:04,683 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:08:04,715 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:08:04,716 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:08:04,716 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:08:04,716 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:08:04,717 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:08:04,717 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:08:04,717 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:08:04,717 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:08:04,718 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:08:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2019-09-20 13:08:04,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:08:04,751 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:04,752 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:04,755 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:04,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:04,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1133755032, now seen corresponding path program 1 times [2019-09-20 13:08:04,763 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:04,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:04,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:04,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:04,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:05,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:05,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:08:05,163 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:08:05,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:08:05,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:05,186 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 2 states. [2019-09-20 13:08:05,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:05,230 INFO L93 Difference]: Finished difference Result 314 states and 385 transitions. [2019-09-20 13:08:05,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:08:05,234 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:08:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:05,256 INFO L225 Difference]: With dead ends: 314 [2019-09-20 13:08:05,256 INFO L226 Difference]: Without dead ends: 159 [2019-09-20 13:08:05,264 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:05,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-09-20 13:08:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2019-09-20 13:08:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-09-20 13:08:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2019-09-20 13:08:05,361 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 59 [2019-09-20 13:08:05,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:05,362 INFO L475 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2019-09-20 13:08:05,363 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:08:05,363 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2019-09-20 13:08:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:08:05,372 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:05,372 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:05,372 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:05,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:05,373 INFO L82 PathProgramCache]: Analyzing trace with hash -138893135, now seen corresponding path program 1 times [2019-09-20 13:08:05,375 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:05,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:05,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:05,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:05,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:05,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:05,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:05,538 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:05,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:05,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:05,539 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand 3 states. [2019-09-20 13:08:05,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:05,589 INFO L93 Difference]: Finished difference Result 257 states and 299 transitions. [2019-09-20 13:08:05,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:05,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:08:05,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:05,593 INFO L225 Difference]: With dead ends: 257 [2019-09-20 13:08:05,593 INFO L226 Difference]: Without dead ends: 150 [2019-09-20 13:08:05,595 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:05,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-09-20 13:08:05,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-09-20 13:08:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-09-20 13:08:05,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 174 transitions. [2019-09-20 13:08:05,609 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 174 transitions. Word has length 60 [2019-09-20 13:08:05,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:05,610 INFO L475 AbstractCegarLoop]: Abstraction has 150 states and 174 transitions. [2019-09-20 13:08:05,610 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:05,610 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2019-09-20 13:08:05,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:08:05,612 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:05,613 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:05,613 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:05,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:05,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1740604635, now seen corresponding path program 1 times [2019-09-20 13:08:05,614 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:05,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:05,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:05,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:05,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:05,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:05,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:05,787 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:05,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:05,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:05,788 INFO L87 Difference]: Start difference. First operand 150 states and 174 transitions. Second operand 7 states. [2019-09-20 13:08:06,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:06,391 INFO L93 Difference]: Finished difference Result 450 states and 540 transitions. [2019-09-20 13:08:06,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:08:06,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:08:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:06,404 INFO L225 Difference]: With dead ends: 450 [2019-09-20 13:08:06,404 INFO L226 Difference]: Without dead ends: 328 [2019-09-20 13:08:06,408 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:08:06,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-09-20 13:08:06,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 320. [2019-09-20 13:08:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-09-20 13:08:06,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 384 transitions. [2019-09-20 13:08:06,472 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 384 transitions. Word has length 64 [2019-09-20 13:08:06,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:06,473 INFO L475 AbstractCegarLoop]: Abstraction has 320 states and 384 transitions. [2019-09-20 13:08:06,473 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:06,473 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 384 transitions. [2019-09-20 13:08:06,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:08:06,475 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:06,476 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:06,476 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:06,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:06,476 INFO L82 PathProgramCache]: Analyzing trace with hash 659595443, now seen corresponding path program 1 times [2019-09-20 13:08:06,476 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:06,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:06,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:06,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:06,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:08:06,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:06,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:06,607 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:06,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:06,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:06,608 INFO L87 Difference]: Start difference. First operand 320 states and 384 transitions. Second operand 7 states. [2019-09-20 13:08:07,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:07,375 INFO L93 Difference]: Finished difference Result 795 states and 1022 transitions. [2019-09-20 13:08:07,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:08:07,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:08:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:07,381 INFO L225 Difference]: With dead ends: 795 [2019-09-20 13:08:07,381 INFO L226 Difference]: Without dead ends: 503 [2019-09-20 13:08:07,383 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2019-09-20 13:08:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 450. [2019-09-20 13:08:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2019-09-20 13:08:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 539 transitions. [2019-09-20 13:08:07,445 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 539 transitions. Word has length 70 [2019-09-20 13:08:07,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:07,446 INFO L475 AbstractCegarLoop]: Abstraction has 450 states and 539 transitions. [2019-09-20 13:08:07,446 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 539 transitions. [2019-09-20 13:08:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:08:07,449 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:07,449 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:07,450 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:07,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:07,450 INFO L82 PathProgramCache]: Analyzing trace with hash -73914297, now seen corresponding path program 1 times [2019-09-20 13:08:07,450 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:07,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:07,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:07,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:07,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:07,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:08:07,591 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:08:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:08:07,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:08:07,592 INFO L87 Difference]: Start difference. First operand 450 states and 539 transitions. Second operand 6 states. [2019-09-20 13:08:07,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:07,646 INFO L93 Difference]: Finished difference Result 886 states and 1094 transitions. [2019-09-20 13:08:07,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:08:07,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-09-20 13:08:07,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:07,650 INFO L225 Difference]: With dead ends: 886 [2019-09-20 13:08:07,650 INFO L226 Difference]: Without dead ends: 464 [2019-09-20 13:08:07,651 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-09-20 13:08:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 460. [2019-09-20 13:08:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2019-09-20 13:08:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 549 transitions. [2019-09-20 13:08:07,696 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 549 transitions. Word has length 107 [2019-09-20 13:08:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:07,699 INFO L475 AbstractCegarLoop]: Abstraction has 460 states and 549 transitions. [2019-09-20 13:08:07,699 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:08:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 549 transitions. [2019-09-20 13:08:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:08:07,702 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:07,703 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:07,703 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:07,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1854358405, now seen corresponding path program 1 times [2019-09-20 13:08:07,703 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:07,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:07,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:07,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:07,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:07,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:08:07,836 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:08:07,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:08:07,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:07,837 INFO L87 Difference]: Start difference. First operand 460 states and 549 transitions. Second operand 8 states. [2019-09-20 13:08:07,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:07,885 INFO L93 Difference]: Finished difference Result 906 states and 1114 transitions. [2019-09-20 13:08:07,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:08:07,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-09-20 13:08:07,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:07,890 INFO L225 Difference]: With dead ends: 906 [2019-09-20 13:08:07,890 INFO L226 Difference]: Without dead ends: 474 [2019-09-20 13:08:07,891 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:07,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2019-09-20 13:08:07,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 468. [2019-09-20 13:08:07,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-09-20 13:08:07,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2019-09-20 13:08:07,924 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 107 [2019-09-20 13:08:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:07,924 INFO L475 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2019-09-20 13:08:07,924 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:08:07,924 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2019-09-20 13:08:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:08:07,927 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:07,927 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:07,928 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:07,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:07,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1613818276, now seen corresponding path program 1 times [2019-09-20 13:08:07,928 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:07,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:07,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:07,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:08,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:08,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:08,032 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:08,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:08,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:08,033 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 4 states. [2019-09-20 13:08:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:08,366 INFO L93 Difference]: Finished difference Result 1456 states and 1818 transitions. [2019-09-20 13:08:08,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:08,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-09-20 13:08:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:08,378 INFO L225 Difference]: With dead ends: 1456 [2019-09-20 13:08:08,378 INFO L226 Difference]: Without dead ends: 1016 [2019-09-20 13:08:08,380 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:08,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2019-09-20 13:08:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 999. [2019-09-20 13:08:08,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2019-09-20 13:08:08,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1224 transitions. [2019-09-20 13:08:08,456 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1224 transitions. Word has length 107 [2019-09-20 13:08:08,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:08,457 INFO L475 AbstractCegarLoop]: Abstraction has 999 states and 1224 transitions. [2019-09-20 13:08:08,457 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:08,457 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1224 transitions. [2019-09-20 13:08:08,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-20 13:08:08,462 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:08,462 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:08,462 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:08,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:08,463 INFO L82 PathProgramCache]: Analyzing trace with hash 608509898, now seen corresponding path program 1 times [2019-09-20 13:08:08,463 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:08,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:08,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:08,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:08,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:08,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:08,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:08:08,646 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:08:08,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:08:08,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:08:08,648 INFO L87 Difference]: Start difference. First operand 999 states and 1224 transitions. Second operand 9 states. [2019-09-20 13:08:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:09,770 INFO L93 Difference]: Finished difference Result 2742 states and 3516 transitions. [2019-09-20 13:08:09,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:09,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-20 13:08:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:09,782 INFO L225 Difference]: With dead ends: 2742 [2019-09-20 13:08:09,782 INFO L226 Difference]: Without dead ends: 1953 [2019-09-20 13:08:09,785 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2019-09-20 13:08:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1728. [2019-09-20 13:08:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2019-09-20 13:08:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2083 transitions. [2019-09-20 13:08:09,903 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2083 transitions. Word has length 111 [2019-09-20 13:08:09,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:09,904 INFO L475 AbstractCegarLoop]: Abstraction has 1728 states and 2083 transitions. [2019-09-20 13:08:09,904 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:08:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2083 transitions. [2019-09-20 13:08:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-09-20 13:08:09,910 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:09,910 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:09,911 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:09,911 INFO L82 PathProgramCache]: Analyzing trace with hash 866799866, now seen corresponding path program 1 times [2019-09-20 13:08:09,912 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:09,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:09,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:09,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:09,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-20 13:08:10,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:10,114 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:10,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:10,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:08:10,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:08:10,618 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:10,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:08:10,619 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:08:10,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:08:10,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:08:10,620 INFO L87 Difference]: Start difference. First operand 1728 states and 2083 transitions. Second operand 16 states. [2019-09-20 13:08:12,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:12,001 INFO L93 Difference]: Finished difference Result 3927 states and 4942 transitions. [2019-09-20 13:08:12,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:08:12,002 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2019-09-20 13:08:12,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:12,019 INFO L225 Difference]: With dead ends: 3927 [2019-09-20 13:08:12,019 INFO L226 Difference]: Without dead ends: 2403 [2019-09-20 13:08:12,027 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2019-09-20 13:08:12,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2019-09-20 13:08:12,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2157. [2019-09-20 13:08:12,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2019-09-20 13:08:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 2573 transitions. [2019-09-20 13:08:12,210 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 2573 transitions. Word has length 172 [2019-09-20 13:08:12,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:12,211 INFO L475 AbstractCegarLoop]: Abstraction has 2157 states and 2573 transitions. [2019-09-20 13:08:12,211 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:08:12,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 2573 transitions. [2019-09-20 13:08:12,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2019-09-20 13:08:12,225 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:12,226 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:12,226 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:12,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:12,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1660264449, now seen corresponding path program 1 times [2019-09-20 13:08:12,227 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:12,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:12,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:12,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:12,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2019-09-20 13:08:12,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:12,496 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:12,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:12,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:08:12,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 212 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:13,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:13,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12] total 16 [2019-09-20 13:08:13,103 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:08:13,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:08:13,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:08:13,105 INFO L87 Difference]: Start difference. First operand 2157 states and 2573 transitions. Second operand 16 states. [2019-09-20 13:08:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:16,031 INFO L93 Difference]: Finished difference Result 5581 states and 7661 transitions. [2019-09-20 13:08:16,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-20 13:08:16,032 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 303 [2019-09-20 13:08:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:16,053 INFO L225 Difference]: With dead ends: 5581 [2019-09-20 13:08:16,054 INFO L226 Difference]: Without dead ends: 3482 [2019-09-20 13:08:16,063 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2019-09-20 13:08:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2019-09-20 13:08:16,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 2514. [2019-09-20 13:08:16,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2514 states. [2019-09-20 13:08:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 2946 transitions. [2019-09-20 13:08:16,250 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 2946 transitions. Word has length 303 [2019-09-20 13:08:16,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:16,251 INFO L475 AbstractCegarLoop]: Abstraction has 2514 states and 2946 transitions. [2019-09-20 13:08:16,251 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:08:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 2946 transitions. [2019-09-20 13:08:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2019-09-20 13:08:16,261 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:16,262 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:16,262 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:16,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:16,263 INFO L82 PathProgramCache]: Analyzing trace with hash 269586567, now seen corresponding path program 1 times [2019-09-20 13:08:16,263 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:16,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:16,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:16,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 93 proven. 55 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2019-09-20 13:08:16,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:16,492 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:16,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:16,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-20 13:08:16,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 250 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-09-20 13:08:16,998 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:16,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:08:17,002 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:08:17,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:08:17,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:08:17,002 INFO L87 Difference]: Start difference. First operand 2514 states and 2946 transitions. Second operand 20 states. [2019-09-20 13:08:18,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:18,833 INFO L93 Difference]: Finished difference Result 4802 states and 5673 transitions. [2019-09-20 13:08:18,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:18,833 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 319 [2019-09-20 13:08:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:18,850 INFO L225 Difference]: With dead ends: 4802 [2019-09-20 13:08:18,851 INFO L226 Difference]: Without dead ends: 2522 [2019-09-20 13:08:18,857 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:08:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2019-09-20 13:08:19,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2516. [2019-09-20 13:08:19,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2019-09-20 13:08:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 2940 transitions. [2019-09-20 13:08:19,018 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 2940 transitions. Word has length 319 [2019-09-20 13:08:19,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:19,019 INFO L475 AbstractCegarLoop]: Abstraction has 2516 states and 2940 transitions. [2019-09-20 13:08:19,019 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:08:19,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 2940 transitions. [2019-09-20 13:08:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-09-20 13:08:19,040 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:19,040 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:19,041 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:19,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:19,041 INFO L82 PathProgramCache]: Analyzing trace with hash 88323915, now seen corresponding path program 1 times [2019-09-20 13:08:19,041 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:19,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:19,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 91 proven. 44 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2019-09-20 13:08:19,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:19,452 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:19,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:19,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:08:19,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 177 proven. 16 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-09-20 13:08:19,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:19,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:08:19,816 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:08:19,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:08:19,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:19,817 INFO L87 Difference]: Start difference. First operand 2516 states and 2940 transitions. Second operand 14 states. [2019-09-20 13:08:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:22,815 INFO L93 Difference]: Finished difference Result 5649 states and 7228 transitions. [2019-09-20 13:08:22,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:08:22,816 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 320 [2019-09-20 13:08:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:22,845 INFO L225 Difference]: With dead ends: 5649 [2019-09-20 13:08:22,845 INFO L226 Difference]: Without dead ends: 4137 [2019-09-20 13:08:22,854 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 339 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:08:22,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2019-09-20 13:08:23,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3081. [2019-09-20 13:08:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3081 states. [2019-09-20 13:08:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 3601 transitions. [2019-09-20 13:08:23,146 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 3601 transitions. Word has length 320 [2019-09-20 13:08:23,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:23,148 INFO L475 AbstractCegarLoop]: Abstraction has 3081 states and 3601 transitions. [2019-09-20 13:08:23,148 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:08:23,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 3601 transitions. [2019-09-20 13:08:23,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2019-09-20 13:08:23,164 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:23,165 INFO L407 BasicCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:23,165 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:23,165 INFO L82 PathProgramCache]: Analyzing trace with hash -979338692, now seen corresponding path program 1 times [2019-09-20 13:08:23,166 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:23,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:23,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:23,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:23,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2019-09-20 13:08:23,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:23,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:23,468 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:23,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:23,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:23,470 INFO L87 Difference]: Start difference. First operand 3081 states and 3601 transitions. Second operand 4 states. [2019-09-20 13:08:23,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:23,692 INFO L93 Difference]: Finished difference Result 3634 states and 4268 transitions. [2019-09-20 13:08:23,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:23,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2019-09-20 13:08:23,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:23,701 INFO L225 Difference]: With dead ends: 3634 [2019-09-20 13:08:23,701 INFO L226 Difference]: Without dead ends: 1285 [2019-09-20 13:08:23,707 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2019-09-20 13:08:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1259. [2019-09-20 13:08:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2019-09-20 13:08:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1428 transitions. [2019-09-20 13:08:23,796 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1428 transitions. Word has length 431 [2019-09-20 13:08:23,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:23,797 INFO L475 AbstractCegarLoop]: Abstraction has 1259 states and 1428 transitions. [2019-09-20 13:08:23,797 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:23,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1428 transitions. [2019-09-20 13:08:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2019-09-20 13:08:23,807 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:23,808 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:23,808 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:23,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:23,809 INFO L82 PathProgramCache]: Analyzing trace with hash 532410555, now seen corresponding path program 1 times [2019-09-20 13:08:23,809 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:23,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:23,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:23,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:23,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 173 proven. 25 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2019-09-20 13:08:24,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:24,194 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:24,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:08:24,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:24,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:08:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 367 proven. 16 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2019-09-20 13:08:24,734 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:24,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2019-09-20 13:08:24,738 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:08:24,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:08:24,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:08:24,740 INFO L87 Difference]: Start difference. First operand 1259 states and 1428 transitions. Second operand 20 states. [2019-09-20 13:08:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:27,359 INFO L93 Difference]: Finished difference Result 2030 states and 2322 transitions. [2019-09-20 13:08:27,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-20 13:08:27,359 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 388 [2019-09-20 13:08:27,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:27,360 INFO L225 Difference]: With dead ends: 2030 [2019-09-20 13:08:27,361 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:08:27,366 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=387, Invalid=1419, Unknown=0, NotChecked=0, Total=1806 [2019-09-20 13:08:27,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:08:27,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:08:27,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:08:27,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:08:27,367 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 388 [2019-09-20 13:08:27,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:27,367 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:08:27,367 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:08:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:08:27,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:08:27,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:08:27,719 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 105 [2019-09-20 13:08:28,259 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 98 [2019-09-20 13:08:28,942 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 103 [2019-09-20 13:08:29,194 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 85 [2019-09-20 13:08:29,551 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 31 [2019-09-20 13:08:29,887 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 41 [2019-09-20 13:08:30,255 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 39 [2019-09-20 13:08:30,562 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2019-09-20 13:08:31,034 WARN L191 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 42 [2019-09-20 13:08:31,248 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 31 [2019-09-20 13:08:31,841 WARN L191 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 46 [2019-09-20 13:08:32,296 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 42 [2019-09-20 13:08:32,472 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 29 [2019-09-20 13:08:33,428 WARN L191 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 60 [2019-09-20 13:08:33,717 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 1 [2019-09-20 13:08:33,863 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 1