/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:59:17,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:59:17,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:59:17,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:59:17,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:59:17,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:59:17,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:59:17,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:59:17,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:59:17,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:59:17,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:59:17,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:59:17,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:59:17,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:59:17,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:59:17,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:59:17,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:59:17,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:59:17,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:59:17,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:59:17,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:59:17,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:59:17,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:59:17,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:59:17,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:59:17,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:59:17,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:59:17,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:59:17,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:59:17,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:59:17,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:59:17,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:59:17,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:59:17,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:59:17,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:59:17,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:59:17,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:59:17,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:59:17,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:59:17,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:59:17,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:59:17,479 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 [2020-08-21 21:59:17,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:59:17,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:59:17,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:59:17,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:59:17,504 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:59:17,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:59:17,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:59:17,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:59:17,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:59:17,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:59:17,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:59:17,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:59:17,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:59:17,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:59:17,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:59:17,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:59:17,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:59:17,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:59:17,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:59:17,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:59:17,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:59:17,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:59:17,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:59:17,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:59:17,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:59:17,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:59:17,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:59:17,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:59:17,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:59:17,512 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=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 21:59:17,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:59:17,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:59:17,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:59:17,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:59:17,884 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:59:17,884 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-08-21 21:59:17,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/479d6c732/cc4cfdacc89749fbbb47e25f63846ca0/FLAGa89ea1e4b [2020-08-21 21:59:18,432 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:59:18,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-08-21 21:59:18,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/479d6c732/cc4cfdacc89749fbbb47e25f63846ca0/FLAGa89ea1e4b [2020-08-21 21:59:18,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/479d6c732/cc4cfdacc89749fbbb47e25f63846ca0 [2020-08-21 21:59:18,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:59:18,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:59:18,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:59:18,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:59:18,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:59:18,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:59:18" (1/1) ... [2020-08-21 21:59:18,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:18, skipping insertion in model container [2020-08-21 21:59:18,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:59:18" (1/1) ... [2020-08-21 21:59:18,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:59:18,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:59:19,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:59:19,266 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:59:19,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:59:19,407 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:59:19,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:19 WrapperNode [2020-08-21 21:59:19,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:59:19,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:59:19,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:59:19,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:59:19,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:19" (1/1) ... [2020-08-21 21:59:19,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:19" (1/1) ... [2020-08-21 21:59:19,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:19" (1/1) ... [2020-08-21 21:59:19,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:19" (1/1) ... [2020-08-21 21:59:19,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:19" (1/1) ... [2020-08-21 21:59:19,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:19" (1/1) ... [2020-08-21 21:59:19,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:19" (1/1) ... [2020-08-21 21:59:19,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:59:19,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:59:19,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:59:19,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:59:19,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:19" (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 [2020-08-21 21:59:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:59:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:59:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:59:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:59:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:59:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:59:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:59:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:59:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 21:59:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 21:59:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:59:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:59:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:59:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:59:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:59:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:59:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:59:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:59:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:59:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:59:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 21:59:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:59:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:59:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:59:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:59:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:59:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:59:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:59:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 21:59:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 21:59:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:59:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:59:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:59:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:59:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:59:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:59:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:59:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 21:59:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:59:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:59:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:59:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:59:19,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:59:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:59:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:59:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:59:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:59:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:59:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:59:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:59:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:59:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:59:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:59:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 21:59:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:59:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:59:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:59:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:59:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:59:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:59:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:59:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:59:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:59:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 21:59:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:59:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:59:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:59:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:59:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:59:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:59:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:59:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:59:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:59:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:59:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:59:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:59:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:59:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:59:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:59:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:59:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:59:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 21:59:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:59:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:59:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:59:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 21:59:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:59:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:59:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:59:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:59:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:59:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:59:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 21:59:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 21:59:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:59:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:59:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:59:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:59:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:59:19,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:59:20,839 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:59:20,840 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:59:20,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:59:20 BoogieIcfgContainer [2020-08-21 21:59:20,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:59:20,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:59:20,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:59:20,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:59:20,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:59:18" (1/3) ... [2020-08-21 21:59:20,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfe7309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:59:20, skipping insertion in model container [2020-08-21 21:59:20,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:19" (2/3) ... [2020-08-21 21:59:20,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfe7309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:59:20, skipping insertion in model container [2020-08-21 21:59:20,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:59:20" (3/3) ... [2020-08-21 21:59:20,854 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product54.cil.c [2020-08-21 21:59:20,865 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:59:20,873 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:59:20,887 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:59:20,913 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:59:20,913 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:59:20,913 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:59:20,914 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:59:20,914 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:59:20,914 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:59:20,915 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:59:20,915 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:59:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states. [2020-08-21 21:59:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 21:59:20,949 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:20,950 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] [2020-08-21 21:59:20,951 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:20,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:20,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1445624956, now seen corresponding path program 1 times [2020-08-21 21:59:20,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:20,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770979062] [2020-08-21 21:59:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:21,709 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:21,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:21,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:21,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:21,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:21,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:59:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:59:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:21,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770979062] [2020-08-21 21:59:21,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:21,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:59:21,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116124863] [2020-08-21 21:59:21,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:59:21,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:21,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:59:21,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:59:21,855 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 4 states. [2020-08-21 21:59:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:23,164 INFO L93 Difference]: Finished difference Result 338 states and 440 transitions. [2020-08-21 21:59:23,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:59:23,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 21:59:23,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:23,190 INFO L225 Difference]: With dead ends: 338 [2020-08-21 21:59:23,190 INFO L226 Difference]: Without dead ends: 187 [2020-08-21 21:59:23,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:59:23,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-08-21 21:59:23,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 152. [2020-08-21 21:59:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-21 21:59:23,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2020-08-21 21:59:23,347 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 51 [2020-08-21 21:59:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:23,348 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2020-08-21 21:59:23,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:59:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2020-08-21 21:59:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:59:23,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:23,352 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] [2020-08-21 21:59:23,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:59:23,353 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:23,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:23,353 INFO L82 PathProgramCache]: Analyzing trace with hash 313505704, now seen corresponding path program 1 times [2020-08-21 21:59:23,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:23,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21295514] [2020-08-21 21:59:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:23,669 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:23,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:23,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:23,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:23,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:23,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:23,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:59:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:23,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:59:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:23,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21295514] [2020-08-21 21:59:23,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:23,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:59:23,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273184210] [2020-08-21 21:59:23,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:59:23,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:23,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:59:23,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:59:23,730 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 5 states. [2020-08-21 21:59:24,156 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:25,266 INFO L93 Difference]: Finished difference Result 279 states and 347 transitions. [2020-08-21 21:59:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 21:59:25,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 21:59:25,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:25,271 INFO L225 Difference]: With dead ends: 279 [2020-08-21 21:59:25,271 INFO L226 Difference]: Without dead ends: 177 [2020-08-21 21:59:25,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:59:25,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-21 21:59:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-21 21:59:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-21 21:59:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-08-21 21:59:25,318 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 52 [2020-08-21 21:59:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:25,319 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-08-21 21:59:25,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:59:25,319 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-08-21 21:59:25,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 21:59:25,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:25,322 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] [2020-08-21 21:59:25,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:59:25,322 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:25,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:25,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1935207340, now seen corresponding path program 1 times [2020-08-21 21:59:25,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:25,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613499863] [2020-08-21 21:59:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,677 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:25,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:59:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 21:59:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:25,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613499863] [2020-08-21 21:59:25,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:25,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:59:25,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327476920] [2020-08-21 21:59:25,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:59:25,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:25,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:59:25,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:59:25,795 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 9 states. [2020-08-21 21:59:26,155 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:26,490 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:26,773 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:27,007 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:28,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:28,474 INFO L93 Difference]: Finished difference Result 292 states and 366 transitions. [2020-08-21 21:59:28,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:59:28,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 21:59:28,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:28,479 INFO L225 Difference]: With dead ends: 292 [2020-08-21 21:59:28,479 INFO L226 Difference]: Without dead ends: 177 [2020-08-21 21:59:28,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:59:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-21 21:59:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-21 21:59:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-21 21:59:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2020-08-21 21:59:28,529 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 57 [2020-08-21 21:59:28,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:28,529 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2020-08-21 21:59:28,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:59:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2020-08-21 21:59:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-21 21:59:28,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:28,533 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] [2020-08-21 21:59:28,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:59:28,534 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:28,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:28,534 INFO L82 PathProgramCache]: Analyzing trace with hash 979214064, now seen corresponding path program 1 times [2020-08-21 21:59:28,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:28,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399363828] [2020-08-21 21:59:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,840 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:28,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:59:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 21:59:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 21:59:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:28,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399363828] [2020-08-21 21:59:28,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:28,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:59:28,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113166824] [2020-08-21 21:59:28,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:59:28,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:28,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:59:28,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:59:28,970 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand 7 states. [2020-08-21 21:59:29,272 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:30,578 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:31,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:31,434 INFO L93 Difference]: Finished difference Result 397 states and 501 transitions. [2020-08-21 21:59:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:59:31,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-08-21 21:59:31,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:31,439 INFO L225 Difference]: With dead ends: 397 [2020-08-21 21:59:31,439 INFO L226 Difference]: Without dead ends: 282 [2020-08-21 21:59:31,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 21:59:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-21 21:59:31,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 233. [2020-08-21 21:59:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-21 21:59:31,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 266 transitions. [2020-08-21 21:59:31,486 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 266 transitions. Word has length 75 [2020-08-21 21:59:31,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:31,486 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 266 transitions. [2020-08-21 21:59:31,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:59:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2020-08-21 21:59:31,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 21:59:31,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:31,489 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] [2020-08-21 21:59:31,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:59:31,489 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:31,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:31,490 INFO L82 PathProgramCache]: Analyzing trace with hash -919866488, now seen corresponding path program 1 times [2020-08-21 21:59:31,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:31,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240638096] [2020-08-21 21:59:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,830 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:31,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:59:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 21:59:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 21:59:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:31,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240638096] [2020-08-21 21:59:31,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:31,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:59:31,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334710060] [2020-08-21 21:59:31,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:59:31,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:31,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:59:31,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:59:31,950 INFO L87 Difference]: Start difference. First operand 233 states and 266 transitions. Second operand 9 states. [2020-08-21 21:59:32,318 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:33,583 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:33,840 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:34,072 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:34,287 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:35,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:35,721 INFO L93 Difference]: Finished difference Result 695 states and 864 transitions. [2020-08-21 21:59:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 21:59:35,721 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-21 21:59:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:35,729 INFO L225 Difference]: With dead ends: 695 [2020-08-21 21:59:35,729 INFO L226 Difference]: Without dead ends: 490 [2020-08-21 21:59:35,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 21:59:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-21 21:59:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 414. [2020-08-21 21:59:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-08-21 21:59:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 472 transitions. [2020-08-21 21:59:35,824 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 472 transitions. Word has length 89 [2020-08-21 21:59:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:35,825 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 472 transitions. [2020-08-21 21:59:35,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:59:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 472 transitions. [2020-08-21 21:59:35,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 21:59:35,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:35,827 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] [2020-08-21 21:59:35,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:59:35,827 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:35,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1008826772, now seen corresponding path program 1 times [2020-08-21 21:59:35,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:35,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499940327] [2020-08-21 21:59:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,092 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:36,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:59:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 21:59:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 21:59:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:36,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499940327] [2020-08-21 21:59:36,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:36,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:59:36,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029666294] [2020-08-21 21:59:36,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:59:36,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:36,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:59:36,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:59:36,308 INFO L87 Difference]: Start difference. First operand 414 states and 472 transitions. Second operand 10 states. [2020-08-21 21:59:36,706 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:37,855 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:38,085 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:38,345 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:38,604 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:40,041 INFO L93 Difference]: Finished difference Result 914 states and 1119 transitions. [2020-08-21 21:59:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 21:59:40,041 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-21 21:59:40,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:40,046 INFO L225 Difference]: With dead ends: 914 [2020-08-21 21:59:40,046 INFO L226 Difference]: Without dead ends: 528 [2020-08-21 21:59:40,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-21 21:59:40,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-08-21 21:59:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 413. [2020-08-21 21:59:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-08-21 21:59:40,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 469 transitions. [2020-08-21 21:59:40,121 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 469 transitions. Word has length 93 [2020-08-21 21:59:40,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:40,121 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 469 transitions. [2020-08-21 21:59:40,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:59:40,122 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 469 transitions. [2020-08-21 21:59:40,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 21:59:40,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:40,123 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] [2020-08-21 21:59:40,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:59:40,124 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:40,124 INFO L82 PathProgramCache]: Analyzing trace with hash 390870795, now seen corresponding path program 1 times [2020-08-21 21:59:40,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:40,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028304933] [2020-08-21 21:59:40,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,388 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:40,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:59:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 21:59:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 21:59:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:40,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028304933] [2020-08-21 21:59:40,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:40,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 21:59:40,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940254107] [2020-08-21 21:59:40,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 21:59:40,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:40,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 21:59:40,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:59:40,569 INFO L87 Difference]: Start difference. First operand 413 states and 469 transitions. Second operand 10 states. [2020-08-21 21:59:41,698 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:59:41,960 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:59:42,232 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:42,465 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:43,704 INFO L93 Difference]: Finished difference Result 917 states and 1130 transitions. [2020-08-21 21:59:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:59:43,705 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-21 21:59:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:43,709 INFO L225 Difference]: With dead ends: 917 [2020-08-21 21:59:43,709 INFO L226 Difference]: Without dead ends: 532 [2020-08-21 21:59:43,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:59:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-21 21:59:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 423. [2020-08-21 21:59:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-08-21 21:59:43,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 479 transitions. [2020-08-21 21:59:43,790 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 479 transitions. Word has length 94 [2020-08-21 21:59:43,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:43,790 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 479 transitions. [2020-08-21 21:59:43,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 21:59:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 479 transitions. [2020-08-21 21:59:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 21:59:43,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:43,793 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] [2020-08-21 21:59:43,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:59:43,793 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:43,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:43,793 INFO L82 PathProgramCache]: Analyzing trace with hash 318484237, now seen corresponding path program 1 times [2020-08-21 21:59:43,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:43,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770948655] [2020-08-21 21:59:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,095 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:44,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:59:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 21:59:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 21:59:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:44,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770948655] [2020-08-21 21:59:44,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:44,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 21:59:44,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494868656] [2020-08-21 21:59:44,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 21:59:44,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:44,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 21:59:44,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:59:44,252 INFO L87 Difference]: Start difference. First operand 423 states and 479 transitions. Second operand 12 states. [2020-08-21 21:59:44,762 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:44,989 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:45,215 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:45,902 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:46,177 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:46,410 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:47,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:47,803 INFO L93 Difference]: Finished difference Result 941 states and 1174 transitions. [2020-08-21 21:59:47,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:59:47,803 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-21 21:59:47,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:47,807 INFO L225 Difference]: With dead ends: 941 [2020-08-21 21:59:47,807 INFO L226 Difference]: Without dead ends: 546 [2020-08-21 21:59:47,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 21:59:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-08-21 21:59:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 431. [2020-08-21 21:59:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-08-21 21:59:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 487 transitions. [2020-08-21 21:59:47,887 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 487 transitions. Word has length 94 [2020-08-21 21:59:47,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:47,888 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 487 transitions. [2020-08-21 21:59:47,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 21:59:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 487 transitions. [2020-08-21 21:59:47,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 21:59:47,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:47,890 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] [2020-08-21 21:59:47,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:59:47,890 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:47,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:47,891 INFO L82 PathProgramCache]: Analyzing trace with hash 648249998, now seen corresponding path program 1 times [2020-08-21 21:59:47,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:47,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117701972] [2020-08-21 21:59:47,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,152 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:59:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 21:59:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 21:59:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:48,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117701972] [2020-08-21 21:59:48,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:48,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:59:48,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875532184] [2020-08-21 21:59:48,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:59:48,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:48,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:59:48,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:59:48,311 INFO L87 Difference]: Start difference. First operand 431 states and 487 transitions. Second operand 8 states. [2020-08-21 21:59:48,659 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:49,204 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:51,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:51,904 INFO L93 Difference]: Finished difference Result 1309 states and 1687 transitions. [2020-08-21 21:59:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 21:59:51,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-21 21:59:51,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:51,912 INFO L225 Difference]: With dead ends: 1309 [2020-08-21 21:59:51,912 INFO L226 Difference]: Without dead ends: 906 [2020-08-21 21:59:51,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-21 21:59:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-08-21 21:59:52,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 761. [2020-08-21 21:59:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-08-21 21:59:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 889 transitions. [2020-08-21 21:59:52,085 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 889 transitions. Word has length 94 [2020-08-21 21:59:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:52,086 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 889 transitions. [2020-08-21 21:59:52,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:59:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 889 transitions. [2020-08-21 21:59:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 21:59:52,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:52,091 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, 1, 1, 1] [2020-08-21 21:59:52,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:59:52,091 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:52,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:52,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1149612728, now seen corresponding path program 1 times [2020-08-21 21:59:52,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:52,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246032249] [2020-08-21 21:59:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,372 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:52,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:59:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:59:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 21:59:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 21:59:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 21:59:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:52,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246032249] [2020-08-21 21:59:52,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:52,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:59:52,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176483394] [2020-08-21 21:59:52,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:59:52,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:52,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:59:52,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:59:52,498 INFO L87 Difference]: Start difference. First operand 761 states and 889 transitions. Second operand 8 states. [2020-08-21 21:59:52,838 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:59:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:55,272 INFO L93 Difference]: Finished difference Result 1499 states and 1925 transitions. [2020-08-21 21:59:55,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 21:59:55,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-21 21:59:55,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:55,282 INFO L225 Difference]: With dead ends: 1499 [2020-08-21 21:59:55,282 INFO L226 Difference]: Without dead ends: 1496 [2020-08-21 21:59:55,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 21:59:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-08-21 21:59:55,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1269. [2020-08-21 21:59:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-21 21:59:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1498 transitions. [2020-08-21 21:59:55,496 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1498 transitions. Word has length 98 [2020-08-21 21:59:55,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:55,497 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1498 transitions. [2020-08-21 21:59:55,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:59:55,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1498 transitions. [2020-08-21 21:59:55,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-21 21:59:55,502 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:55,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 21:59:55,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:59:55,503 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:55,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:55,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1054262603, now seen corresponding path program 1 times [2020-08-21 21:59:55,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:55,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647064616] [2020-08-21 21:59:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,820 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:55,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:59:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:59:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:59:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:59:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 21:59:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:59:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:55,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 21:59:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:59:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:59:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:59:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 21:59:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-21 21:59:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,085 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-21 21:59:56,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647064616] [2020-08-21 21:59:56,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:59:56,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 21:59:56,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129962874] [2020-08-21 21:59:56,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 21:59:56,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:56,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 21:59:56,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:59:56,093 INFO L87 Difference]: Start difference. First operand 1269 states and 1498 transitions. Second operand 13 states. [2020-08-21 21:59:57,107 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:57,425 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:57,678 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:59:58,788 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:00,973 INFO L93 Difference]: Finished difference Result 2281 states and 2814 transitions. [2020-08-21 22:00:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 22:00:00,973 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-08-21 22:00:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:00,982 INFO L225 Difference]: With dead ends: 2281 [2020-08-21 22:00:00,983 INFO L226 Difference]: Without dead ends: 1182 [2020-08-21 22:00:00,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 22:00:00,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2020-08-21 22:00:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1046. [2020-08-21 22:00:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-08-21 22:00:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1220 transitions. [2020-08-21 22:00:01,174 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1220 transitions. Word has length 162 [2020-08-21 22:00:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:01,174 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1220 transitions. [2020-08-21 22:00:01,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 22:00:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1220 transitions. [2020-08-21 22:00:01,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-21 22:00:01,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:01,178 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:00:01,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:00:01,179 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:01,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:01,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1747787381, now seen corresponding path program 1 times [2020-08-21 22:00:01,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:01,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816879773] [2020-08-21 22:00:01,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,458 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:00:01,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:00:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:00:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:00:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:00:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:00:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 22:00:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:00:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 22:00:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 22:00:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:00:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:00:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:00:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:00:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 22:00:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 22:00:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-21 22:00:01,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816879773] [2020-08-21 22:00:01,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:00:01,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 22:00:01,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206354104] [2020-08-21 22:00:01,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 22:00:01,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:01,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 22:00:01,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:00:01,836 INFO L87 Difference]: Start difference. First operand 1046 states and 1220 transitions. Second operand 19 states. [2020-08-21 22:00:02,744 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:03,089 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:00:03,361 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:00:03,613 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:00:04,378 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:00:05,742 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:06,108 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:07,591 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:07,855 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:08,165 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:08,436 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:08,686 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:08,942 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:09,224 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:09,486 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:00:10,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:10,912 INFO L93 Difference]: Finished difference Result 2018 states and 2444 transitions. [2020-08-21 22:00:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-21 22:00:10,915 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 175 [2020-08-21 22:00:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:10,917 INFO L225 Difference]: With dead ends: 2018 [2020-08-21 22:00:10,917 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 22:00:10,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2020-08-21 22:00:10,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 22:00:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 22:00:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 22:00:10,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 22:00:10,925 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 175 [2020-08-21 22:00:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:10,925 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 22:00:10,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 22:00:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 22:00:10,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 22:00:10,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 22:00:10,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 22:00:11,677 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 29 [2020-08-21 22:00:12,202 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30 [2020-08-21 22:00:12,332 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30 [2020-08-21 22:00:12,524 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 31 [2020-08-21 22:00:12,826 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 31 [2020-08-21 22:00:15,322 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 361 DAG size of output: 317 [2020-08-21 22:00:16,080 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 300