/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:20:15,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:20:15,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:20:15,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:20:15,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:20:15,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:20:15,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:20:15,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:20:15,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:20:15,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:20:15,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:20:15,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:20:15,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:20:15,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:20:15,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:20:15,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:20:15,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:20:15,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:20:15,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:20:15,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:20:15,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:20:15,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:20:15,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:20:15,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:20:15,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:20:15,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:20:15,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:20:15,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:20:15,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:20:15,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:20:15,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:20:15,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:20:15,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:20:15,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:20:15,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:20:15,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:20:15,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:20:15,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:20:15,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:20:15,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:20:15,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:20:15,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 19:20:15,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:20:15,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:20:15,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:20:15,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:20:15,641 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:20:15,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:20:15,641 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:20:15,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:20:15,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:20:15,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:20:15,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:20:15,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:20:15,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:20:15,642 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:20:15,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:20:15,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:20:15,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:20:15,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:20:15,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:20:15,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:20:15,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:20:15,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:20:15,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:20:15,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:20:15,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:20:15,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:20:15,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:20:15,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:20:15,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:20:15,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:20:15,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:20:16,003 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:20:16,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:20:16,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:20:16,008 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:20:16,010 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 19:20:16,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17e069d5c/ec3d6221d9f64c119d876474db753591/FLAG0dd241237 [2020-08-18 19:20:16,585 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:20:16,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 19:20:16,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17e069d5c/ec3d6221d9f64c119d876474db753591/FLAG0dd241237 [2020-08-18 19:20:16,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17e069d5c/ec3d6221d9f64c119d876474db753591 [2020-08-18 19:20:16,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:20:16,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:20:16,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:20:16,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:20:16,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:20:16,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:20:16" (1/1) ... [2020-08-18 19:20:16,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:20:16, skipping insertion in model container [2020-08-18 19:20:16,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:20:16" (1/1) ... [2020-08-18 19:20:16,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:20:16,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:20:17,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:20:17,356 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:20:17,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:20:17,585 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:20:17,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:20:17 WrapperNode [2020-08-18 19:20:17,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:20:17,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:20:17,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:20:17,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:20:17,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:20:17" (1/1) ... [2020-08-18 19:20:17,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:20:17" (1/1) ... [2020-08-18 19:20:17,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:20:17" (1/1) ... [2020-08-18 19:20:17,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:20:17" (1/1) ... [2020-08-18 19:20:17,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:20:17" (1/1) ... [2020-08-18 19:20:17,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:20:17" (1/1) ... [2020-08-18 19:20:17,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:20:17" (1/1) ... [2020-08-18 19:20:17,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:20:17,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:20:17,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:20:17,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:20:17,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:20:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 19:20:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:20:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:20:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:20:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:20:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:20:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:20:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:20:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:20:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:20:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:20:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 19:20:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:20:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:20:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:20:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:20:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:20:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:20:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 19:20:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:20:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:20:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:20:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:20:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:20:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:20:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:20:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:20:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:20:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:20:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:20:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:20:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:20:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:20:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 19:20:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:20:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:20:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:20:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:20:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:20:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:20:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:20:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 19:20:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 19:20:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:20:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:20:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:20:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:20:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:20:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:20:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:20:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:20:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:20:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:20:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 19:20:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:20:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:20:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:20:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:20:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:20:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:20:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:20:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:20:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:20:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:20:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:20:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:20:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:20:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:20:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 19:20:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:20:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:20:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:20:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:20:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:20:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:20:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:20:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:20:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:20:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:20:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:20:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:20:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:20:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:20:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:20:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:20:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:20:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 19:20:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:20:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:20:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:20:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:20:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:20:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:20:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 19:20:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 19:20:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:20:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:20:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:20:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:20:18,894 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:20:18,894 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:20:18,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:20:18 BoogieIcfgContainer [2020-08-18 19:20:18,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:20:18,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:20:18,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:20:18,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:20:18,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:20:16" (1/3) ... [2020-08-18 19:20:18,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b787b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:20:18, skipping insertion in model container [2020-08-18 19:20:18,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:20:17" (2/3) ... [2020-08-18 19:20:18,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b787b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:20:18, skipping insertion in model container [2020-08-18 19:20:18,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:20:18" (3/3) ... [2020-08-18 19:20:18,913 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-18 19:20:18,924 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:20:18,932 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:20:18,946 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:20:18,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:20:18,973 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:20:18,973 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:20:18,973 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:20:18,974 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:20:18,974 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:20:18,974 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:20:18,975 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:20:18,996 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-18 19:20:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 19:20:19,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:19,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:20:19,009 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:19,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:19,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-18 19:20:19,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:19,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040889635] [2020-08-18 19:20:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:19,733 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:19,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:19,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:19,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:19,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:19,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:20:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:19,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:20:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:19,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:20:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:20:19,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040889635] [2020-08-18 19:20:19,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:20:19,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:20:19,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240280574] [2020-08-18 19:20:19,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:20:19,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:19,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:20:19,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:20:19,878 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-18 19:20:21,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:20:21,204 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-18 19:20:21,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:20:21,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 19:20:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:20:21,222 INFO L225 Difference]: With dead ends: 350 [2020-08-18 19:20:21,222 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 19:20:21,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:20:21,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 19:20:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-18 19:20:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 19:20:21,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-18 19:20:21,357 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-18 19:20:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:20:21,358 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-18 19:20:21,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:20:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-18 19:20:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 19:20:21,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:21,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:20:21,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:20:21,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:21,365 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-18 19:20:21,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:21,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184336604] [2020-08-18 19:20:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:21,772 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:21,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:21,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:21,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:21,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:21,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:20:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:21,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 19:20:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:21,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 19:20:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:20:21,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184336604] [2020-08-18 19:20:21,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:20:21,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:20:21,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445931677] [2020-08-18 19:20:21,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:20:21,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:21,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:20:21,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:20:21,828 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-18 19:20:22,220 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:20:23,369 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-18 19:20:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:20:23,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 19:20:23,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:20:23,373 INFO L225 Difference]: With dead ends: 279 [2020-08-18 19:20:23,374 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 19:20:23,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:20:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 19:20:23,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 19:20:23,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 19:20:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-18 19:20:23,426 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-18 19:20:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:20:23,427 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-18 19:20:23,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:20:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-18 19:20:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 19:20:23,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:23,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:20:23,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:20:23,431 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:23,431 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-18 19:20:23,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:23,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534819201] [2020-08-18 19:20:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:23,754 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:23,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:23,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:23,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:23,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:23,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:20:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:23,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:20:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:23,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:20:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:20:23,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534819201] [2020-08-18 19:20:23,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:20:23,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:20:23,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634413590] [2020-08-18 19:20:23,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:20:23,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:23,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:20:23,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:20:23,874 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-18 19:20:24,214 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:20:24,545 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:24,789 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:25,033 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:20:26,496 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-18 19:20:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:20:26,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 19:20:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:20:26,500 INFO L225 Difference]: With dead ends: 292 [2020-08-18 19:20:26,501 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 19:20:26,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:20:26,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 19:20:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 19:20:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 19:20:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-18 19:20:26,549 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-18 19:20:26,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:20:26,550 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-18 19:20:26,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:20:26,550 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-18 19:20:26,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-18 19:20:26,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:26,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:20:26,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:20:26,554 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:26,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:26,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-18 19:20:26,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:26,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184076769] [2020-08-18 19:20:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:26,889 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:26,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:26,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:26,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:26,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:26,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:26,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:20:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:26,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:26,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:27,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:20:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 19:20:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 19:20:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:20:27,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184076769] [2020-08-18 19:20:27,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:20:27,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:20:27,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566712722] [2020-08-18 19:20:27,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:20:27,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:27,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:20:27,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:20:27,023 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-18 19:20:27,332 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:20:28,600 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:20:29,442 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-18 19:20:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:20:29,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-18 19:20:29,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:20:29,451 INFO L225 Difference]: With dead ends: 407 [2020-08-18 19:20:29,452 INFO L226 Difference]: Without dead ends: 287 [2020-08-18 19:20:29,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:20:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-18 19:20:29,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-18 19:20:29,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 19:20:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-18 19:20:29,531 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-18 19:20:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:20:29,532 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-18 19:20:29,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:20:29,532 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-18 19:20:29,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 19:20:29,534 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:29,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:20:29,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:20:29,535 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:29,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:29,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-18 19:20:29,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:29,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595539223] [2020-08-18 19:20:29,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,839 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:29,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:20:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:20:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 19:20:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 19:20:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 19:20:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:20:29,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595539223] [2020-08-18 19:20:29,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:20:29,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:20:29,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027885377] [2020-08-18 19:20:29,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:20:29,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:29,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:20:29,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:20:29,976 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-18 19:20:30,302 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:20:31,632 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:31,914 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:32,182 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:32,441 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:20:33,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:20:33,296 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-18 19:20:33,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 19:20:33,297 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-18 19:20:33,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:20:33,300 INFO L225 Difference]: With dead ends: 641 [2020-08-18 19:20:33,300 INFO L226 Difference]: Without dead ends: 421 [2020-08-18 19:20:33,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:20:33,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-18 19:20:33,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-18 19:20:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-18 19:20:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-18 19:20:33,376 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-18 19:20:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:20:33,377 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-18 19:20:33,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:20:33,377 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-18 19:20:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 19:20:33,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:33,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:20:33,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:20:33,379 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:33,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:33,380 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-18 19:20:33,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:33,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475498590] [2020-08-18 19:20:33,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,630 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:33,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:20:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:20:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:20:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 19:20:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:20:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 19:20:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:20:33,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475498590] [2020-08-18 19:20:33,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:20:33,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:20:33,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146416983] [2020-08-18 19:20:33,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:20:33,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:33,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:20:33,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:20:33,784 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-18 19:20:34,124 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:20:34,622 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:20:36,237 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:20:38,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:20:38,359 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-18 19:20:38,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 19:20:38,360 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 19:20:38,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:20:38,367 INFO L225 Difference]: With dead ends: 980 [2020-08-18 19:20:38,367 INFO L226 Difference]: Without dead ends: 749 [2020-08-18 19:20:38,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 19:20:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-18 19:20:38,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-18 19:20:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 19:20:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-18 19:20:38,517 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-18 19:20:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:20:38,517 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-18 19:20:38,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:20:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-18 19:20:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 19:20:38,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:38,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:20:38,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:20:38,520 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:38,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-18 19:20:38,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:38,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988067820] [2020-08-18 19:20:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,764 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:38,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:20:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:20:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:20:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 19:20:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:20:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 19:20:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:20:38,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988067820] [2020-08-18 19:20:38,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:20:38,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:20:38,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374315325] [2020-08-18 19:20:38,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:20:38,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:38,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:20:38,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:20:38,930 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-18 19:20:39,807 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:40,039 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:20:40,295 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:20:41,629 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-18 19:20:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:20:41,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 19:20:41,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:20:41,636 INFO L225 Difference]: With dead ends: 1250 [2020-08-18 19:20:41,636 INFO L226 Difference]: Without dead ends: 723 [2020-08-18 19:20:41,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:20:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-18 19:20:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-18 19:20:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 19:20:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-18 19:20:41,777 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-18 19:20:41,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:20:41,778 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-18 19:20:41,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:20:41,778 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-18 19:20:41,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 19:20:41,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:41,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:20:41,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:20:41,780 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:41,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:41,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-18 19:20:41,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:41,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144322069] [2020-08-18 19:20:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,078 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:20:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:20:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:20:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 19:20:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 19:20:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 19:20:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:20:42,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144322069] [2020-08-18 19:20:42,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:20:42,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:20:42,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193965419] [2020-08-18 19:20:42,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:20:42,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:42,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:20:42,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:20:42,269 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-18 19:20:42,842 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:43,058 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:43,323 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:44,014 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:44,238 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:20:44,504 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:44,747 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:20:46,049 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-18 19:20:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 19:20:46,050 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-18 19:20:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:20:46,056 INFO L225 Difference]: With dead ends: 1343 [2020-08-18 19:20:46,056 INFO L226 Difference]: Without dead ends: 689 [2020-08-18 19:20:46,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 19:20:46,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-18 19:20:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-18 19:20:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 19:20:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-18 19:20:46,219 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-18 19:20:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:20:46,220 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-18 19:20:46,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:20:46,220 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-18 19:20:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 19:20:46,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:46,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:20:46,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:20:46,224 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:46,224 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-18 19:20:46,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:46,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827203742] [2020-08-18 19:20:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,564 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:46,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:20:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:20:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:20:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 19:20:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 19:20:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 19:20:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:20:46,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827203742] [2020-08-18 19:20:46,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:20:46,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 19:20:46,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503007162] [2020-08-18 19:20:46,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:20:46,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:46,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:20:46,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:20:46,725 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-18 19:20:47,235 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:47,478 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:47,739 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:48,756 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:20:49,404 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:49,736 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:20:50,009 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:20:50,773 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:20:51,121 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:51,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:20:51,704 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-18 19:20:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 19:20:51,704 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-18 19:20:51,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:20:51,710 INFO L225 Difference]: With dead ends: 1307 [2020-08-18 19:20:51,710 INFO L226 Difference]: Without dead ends: 682 [2020-08-18 19:20:51,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-18 19:20:51,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-18 19:20:51,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-18 19:20:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 19:20:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-18 19:20:51,834 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-18 19:20:51,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:20:51,834 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-18 19:20:51,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 19:20:51,835 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-18 19:20:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 19:20:51,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:51,837 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:20:51,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:20:51,838 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:51,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:51,838 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-18 19:20:51,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:51,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429309275] [2020-08-18 19:20:51,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,104 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:20:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:20:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 19:20:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 19:20:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 19:20:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:20:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 19:20:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 19:20:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 19:20:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 19:20:52,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429309275] [2020-08-18 19:20:52,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:20:52,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 19:20:52,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110026177] [2020-08-18 19:20:52,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:20:52,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:52,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:20:52,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:20:52,393 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-18 19:20:53,654 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:53,890 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:20:54,119 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:54,341 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:20:55,336 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-18 19:20:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:20:55,336 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-18 19:20:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:20:55,340 INFO L225 Difference]: With dead ends: 1216 [2020-08-18 19:20:55,341 INFO L226 Difference]: Without dead ends: 670 [2020-08-18 19:20:55,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:20:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-18 19:20:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-18 19:20:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 19:20:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-18 19:20:55,462 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-18 19:20:55,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:20:55,463 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-18 19:20:55,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:20:55,463 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-18 19:20:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 19:20:55,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:55,467 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:20:55,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:20:55,467 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:55,468 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-18 19:20:55,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:55,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87780915] [2020-08-18 19:20:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,760 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:55,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:20:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:20:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 19:20:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 19:20:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 19:20:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:20:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 19:20:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 19:20:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 19:20:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 19:20:55,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87780915] [2020-08-18 19:20:55,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:20:55,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 19:20:55,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111235965] [2020-08-18 19:20:55,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:20:55,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:55,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:20:55,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:20:55,993 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-18 19:20:56,468 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:20:56,704 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:56,926 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:57,577 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:57,827 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:58,060 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:20:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:20:59,189 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-18 19:20:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:20:59,189 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-18 19:20:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:20:59,194 INFO L225 Difference]: With dead ends: 1124 [2020-08-18 19:20:59,194 INFO L226 Difference]: Without dead ends: 573 [2020-08-18 19:20:59,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:20:59,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-18 19:20:59,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-18 19:20:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 19:20:59,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-18 19:20:59,293 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-18 19:20:59,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:20:59,294 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-18 19:20:59,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:20:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-18 19:20:59,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 19:20:59,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:20:59,296 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-18 19:20:59,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:20:59,297 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:20:59,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:20:59,297 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-18 19:20:59,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:20:59,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613067083] [2020-08-18 19:20:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:20:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,568 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:20:59,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:20:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:20:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:20:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:20:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:20:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:20:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:20:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:20:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 19:20:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 19:20:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:20:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:20:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:20:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:20:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 19:20:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 19:20:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 19:20:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:20:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 19:20:59,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613067083] [2020-08-18 19:20:59,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:20:59,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 19:20:59,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719058008] [2020-08-18 19:20:59,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:20:59,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:20:59,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:20:59,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:20:59,784 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-18 19:21:00,277 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:21:00,894 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:21:01,871 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:21:02,400 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 19:21:02,878 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 19:21:03,108 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:21:04,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:21:04,694 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-18 19:21:04,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 19:21:04,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-18 19:21:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:21:04,700 INFO L225 Difference]: With dead ends: 1637 [2020-08-18 19:21:04,700 INFO L226 Difference]: Without dead ends: 1109 [2020-08-18 19:21:04,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-18 19:21:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-18 19:21:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-18 19:21:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-18 19:21:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-18 19:21:04,931 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-18 19:21:04,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:21:04,931 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-18 19:21:04,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:21:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-18 19:21:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 19:21:04,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:21:04,936 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-18 19:21:04,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 19:21:04,936 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:21:04,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:21:04,937 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-18 19:21:04,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:21:04,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355326678] [2020-08-18 19:21:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:21:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,250 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:21:05,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:21:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:21:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:21:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:21:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:21:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:21:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:21:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:21:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:21:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:21:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:21:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:21:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:21:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:21:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 19:21:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:21:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 19:21:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 19:21:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:21:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:21:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:21:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 19:21:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 19:21:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 19:21:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 19:21:05,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355326678] [2020-08-18 19:21:05,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:21:05,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 19:21:05,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528797142] [2020-08-18 19:21:05,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 19:21:05,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:21:05,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 19:21:05,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:21:05,464 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-18 19:21:05,950 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:21:06,182 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:21:06,416 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:21:07,014 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:21:08,094 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:21:08,425 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:21:08,709 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:21:08,964 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:21:10,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:21:10,966 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-18 19:21:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 19:21:10,967 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-18 19:21:10,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:21:10,974 INFO L225 Difference]: With dead ends: 2187 [2020-08-18 19:21:10,974 INFO L226 Difference]: Without dead ends: 1134 [2020-08-18 19:21:10,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-18 19:21:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-18 19:21:11,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-18 19:21:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-18 19:21:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-18 19:21:11,153 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-18 19:21:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:21:11,154 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-18 19:21:11,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 19:21:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-18 19:21:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 19:21:11,157 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:21:11,157 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:21:11,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 19:21:11,158 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:21:11,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:21:11,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-18 19:21:11,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:21:11,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236623215] [2020-08-18 19:21:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:21:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,411 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 19:21:11,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:21:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:21:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:21:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:21:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:21:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 19:21:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:21:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:21:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:21:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:21:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:21:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:21:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:21:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 19:21:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:21:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:21:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 19:21:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 19:21:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:21:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:21:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:21:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 19:21:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 19:21:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 19:21:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:21:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-18 19:21:11,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236623215] [2020-08-18 19:21:11,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:21:11,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 19:21:11,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630490851] [2020-08-18 19:21:11,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 19:21:11,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:21:11,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 19:21:11,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:21:11,664 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-18 19:21:12,362 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 19:21:13,102 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:21:14,308 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 19:21:14,647 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189