/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:17:10,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:17:10,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:17:10,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:17:10,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:17:10,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:17:10,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:17:10,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:17:10,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:17:10,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:17:10,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:17:10,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:17:10,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:17:10,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:17:10,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:17:10,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:17:10,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:17:10,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:17:10,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:17:10,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:17:10,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:17:10,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:17:10,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:17:10,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:17:10,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:17:10,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:17:10,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:17:10,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:17:10,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:17:10,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:17:10,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:17:10,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:17:10,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:17:10,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:17:10,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:17:10,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:17:10,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:17:10,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:17:10,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:17:10,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:17:10,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:17:10,528 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 [2020-08-22 05:17:10,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:17:10,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:17:10,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:17:10,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:17:10,581 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:17:10,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:17:10,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:17:10,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:17:10,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:17:10,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:17:10,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:17:10,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:17:10,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:17:10,583 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:17:10,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:17:10,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:17:10,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:17:10,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:17:10,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:17:10,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:17:10,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:17:10,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:17:10,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:17:10,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:17:10,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:17:10,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:17:10,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:17:10,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:17:10,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:17:10,586 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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:17:10,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:17:10,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:17:10,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:17:10,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:17:10,934 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:17:10,935 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-22 05:17:11,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f62f07f5e/eb919d703327467f8ed50f4b59867e58/FLAG2a223b02e [2020-08-22 05:17:11,529 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:17:11,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-22 05:17:11,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f62f07f5e/eb919d703327467f8ed50f4b59867e58/FLAG2a223b02e [2020-08-22 05:17:11,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f62f07f5e/eb919d703327467f8ed50f4b59867e58 [2020-08-22 05:17:11,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:17:11,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:17:11,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:17:11,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:17:11,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:17:11,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:17:11" (1/1) ... [2020-08-22 05:17:11,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@559d5a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:11, skipping insertion in model container [2020-08-22 05:17:11,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:17:11" (1/1) ... [2020-08-22 05:17:11,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:17:11,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:17:12,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:17:12,407 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:17:12,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:17:12,587 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:17:12,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12 WrapperNode [2020-08-22 05:17:12,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:17:12,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:17:12,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:17:12,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:17:12,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:17:12,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:17:12,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:17:12,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:17:12,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (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 [2020-08-22 05:17:12,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:17:12,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:17:12,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:17:12,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:17:12,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:17:12,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:17:12,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:17:12,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:17:12,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:17:12,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:17:12,772 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:17:12,772 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:17:12,772 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:17:12,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:17:12,773 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:17:12,774 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:17:12,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:17:12,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 05:17:12,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 05:17:12,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 05:17:12,775 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:17:12,775 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:17:12,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:17:12,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 05:17:12,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:17:12,777 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:17:12,777 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:17:12,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:17:12,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:17:12,778 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:17:12,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:17:12,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 05:17:12,778 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 05:17:12,779 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:17:12,779 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:17:12,779 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:17:12,779 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:17:12,779 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:17:12,779 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:17:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:17:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:17:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:17:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:17:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:17:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:17:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:17:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:17:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:17:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:17:12,781 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:17:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:17:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:17:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:17:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:17:12,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:17:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:17:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:17:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:17:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:17:12,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:17:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:17:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:17:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:17:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:17:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:17:12,784 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:17:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:17:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:17:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:17:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:17:12,785 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:17:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:17:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 05:17:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:17:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 05:17:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 05:17:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:17:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:17:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:17:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:17:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 05:17:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:17:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:17:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:17:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:17:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:17:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 05:17:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 05:17:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:17:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:17:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:17:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:17:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:17:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:17:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:17:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:17:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:17:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:17:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:17:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:17:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:17:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:17:14,097 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:17:14,098 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:17:14,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:17:14 BoogieIcfgContainer [2020-08-22 05:17:14,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:17:14,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:17:14,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:17:14,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:17:14,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:17:11" (1/3) ... [2020-08-22 05:17:14,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0a8037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:17:14, skipping insertion in model container [2020-08-22 05:17:14,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (2/3) ... [2020-08-22 05:17:14,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0a8037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:17:14, skipping insertion in model container [2020-08-22 05:17:14,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:17:14" (3/3) ... [2020-08-22 05:17:14,113 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-22 05:17:14,125 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:17:14,133 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:17:14,149 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:17:14,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:17:14,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:17:14,176 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:17:14,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:17:14,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:17:14,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:17:14,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:17:14,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:17:14,202 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-22 05:17:14,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 05:17:14,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:14,215 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] [2020-08-22 05:17:14,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:14,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:14,222 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-22 05:17:14,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:14,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018165154] [2020-08-22 05:17:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:14,924 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:14,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:15,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:15,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:15,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:15,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:15,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:17:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:15,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:17:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:15,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018165154] [2020-08-22 05:17:15,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:15,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:17:15,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937389197] [2020-08-22 05:17:15,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:17:15,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:15,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:17:15,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:17:15,114 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-22 05:17:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:16,484 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-22 05:17:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:17:16,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 05:17:16,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:16,501 INFO L225 Difference]: With dead ends: 353 [2020-08-22 05:17:16,501 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 05:17:16,506 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 [2020-08-22 05:17:16,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 05:17:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-22 05:17:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-22 05:17:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-22 05:17:16,626 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-22 05:17:16,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:16,626 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-22 05:17:16,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:17:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-22 05:17:16,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:17:16,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:16,631 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] [2020-08-22 05:17:16,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:17:16,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:16,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:16,632 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-22 05:17:16,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:16,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998832624] [2020-08-22 05:17:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:16,989 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:17,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:17,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:17,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:17,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:17,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:17,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:17:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:17,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:17:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:17,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998832624] [2020-08-22 05:17:17,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:17,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:17:17,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021934957] [2020-08-22 05:17:17,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:17:17,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:17,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:17:17,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:17:17,049 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-22 05:17:17,482 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:18,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:18,614 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-22 05:17:18,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 05:17:18,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 05:17:18,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:18,620 INFO L225 Difference]: With dead ends: 288 [2020-08-22 05:17:18,620 INFO L226 Difference]: Without dead ends: 186 [2020-08-22 05:17:18,622 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 [2020-08-22 05:17:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-22 05:17:18,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-22 05:17:18,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-22 05:17:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-22 05:17:18,668 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-22 05:17:18,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:18,668 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-22 05:17:18,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:17:18,668 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-22 05:17:18,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 05:17:18,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:18,671 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] [2020-08-22 05:17:18,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:17:18,672 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:18,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-22 05:17:18,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:18,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544369686] [2020-08-22 05:17:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:19,002 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:19,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:19,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:19,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:19,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:19,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:19,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:17:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:17:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:19,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544369686] [2020-08-22 05:17:19,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:19,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:17:19,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286309997] [2020-08-22 05:17:19,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:17:19,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:19,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:17:19,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:17:19,090 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-22 05:17:19,469 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:19,770 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:20,011 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:20,257 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:21,034 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:23,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:23,435 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-22 05:17:23,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 05:17:23,436 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-22 05:17:23,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:23,442 INFO L225 Difference]: With dead ends: 503 [2020-08-22 05:17:23,442 INFO L226 Difference]: Without dead ends: 382 [2020-08-22 05:17:23,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 05:17:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-22 05:17:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-22 05:17:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-22 05:17:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-22 05:17:23,523 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-22 05:17:23,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:23,523 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-22 05:17:23,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:17:23,523 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-22 05:17:23,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 05:17:23,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:23,527 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] [2020-08-22 05:17:23,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:17:23,527 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:23,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:23,528 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-22 05:17:23,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:23,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661392591] [2020-08-22 05:17:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:23,810 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:23,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:23,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:23,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:23,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:23,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:23,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:23,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:17:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:23,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:17:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 05:17:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:23,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661392591] [2020-08-22 05:17:23,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:23,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:17:23,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330705149] [2020-08-22 05:17:23,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:17:23,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:23,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:17:23,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:17:23,965 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-22 05:17:24,359 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:25,392 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:25,850 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:26,083 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:26,318 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:28,211 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-22 05:17:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 05:17:28,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-22 05:17:28,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:28,220 INFO L225 Difference]: With dead ends: 992 [2020-08-22 05:17:28,220 INFO L226 Difference]: Without dead ends: 711 [2020-08-22 05:17:28,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 05:17:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-22 05:17:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-22 05:17:28,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-22 05:17:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-22 05:17:28,363 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-22 05:17:28,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:28,364 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-22 05:17:28,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:17:28,364 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-22 05:17:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 05:17:28,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:28,369 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] [2020-08-22 05:17:28,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:17:28,370 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:28,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:28,370 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-22 05:17:28,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:28,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055265713] [2020-08-22 05:17:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:28,709 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:28,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:28,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:28,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:28,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:28,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:28,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:28,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:17:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:28,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 05:17:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 05:17:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 05:17:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:28,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055265713] [2020-08-22 05:17:28,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:28,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:17:28,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410647831] [2020-08-22 05:17:28,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:17:28,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:28,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:17:28,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:17:28,844 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-22 05:17:29,183 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:30,204 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:30,498 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:30,742 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:31,428 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:32,979 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-22 05:17:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 05:17:32,980 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-22 05:17:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:32,994 INFO L225 Difference]: With dead ends: 1565 [2020-08-22 05:17:32,995 INFO L226 Difference]: Without dead ends: 1027 [2020-08-22 05:17:32,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-22 05:17:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-22 05:17:33,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-22 05:17:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-22 05:17:33,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-22 05:17:33,230 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-22 05:17:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:33,232 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-22 05:17:33,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:17:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-22 05:17:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 05:17:33,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:33,237 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] [2020-08-22 05:17:33,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:17:33,237 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:33,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:33,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-22 05:17:33,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:33,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204663750] [2020-08-22 05:17:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,543 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:33,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:17:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:17:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 05:17:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 05:17:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:33,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204663750] [2020-08-22 05:17:33,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:33,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:17:33,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858456455] [2020-08-22 05:17:33,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:17:33,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:33,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:17:33,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:17:33,727 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-22 05:17:34,807 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:35,050 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 05:17:35,304 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:35,577 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:37,047 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-22 05:17:37,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 05:17:37,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-22 05:17:37,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:37,058 INFO L225 Difference]: With dead ends: 1894 [2020-08-22 05:17:37,058 INFO L226 Difference]: Without dead ends: 1101 [2020-08-22 05:17:37,062 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 [2020-08-22 05:17:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-22 05:17:37,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-22 05:17:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-22 05:17:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-22 05:17:37,237 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-22 05:17:37,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:37,237 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-22 05:17:37,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:17:37,237 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-22 05:17:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 05:17:37,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:37,242 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] [2020-08-22 05:17:37,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:17:37,243 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:37,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:37,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-22 05:17:37,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:37,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508025764] [2020-08-22 05:17:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,567 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:37,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:17:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:17:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 05:17:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 05:17:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:37,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508025764] [2020-08-22 05:17:37,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:37,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 05:17:37,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888951777] [2020-08-22 05:17:37,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:17:37,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:37,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:17:37,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:17:37,781 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-22 05:17:38,204 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:38,435 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:38,664 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:39,491 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:39,752 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:39,994 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:41,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:41,688 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-22 05:17:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:17:41,690 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-22 05:17:41,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:41,702 INFO L225 Difference]: With dead ends: 1948 [2020-08-22 05:17:41,702 INFO L226 Difference]: Without dead ends: 1129 [2020-08-22 05:17:41,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 05:17:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-22 05:17:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-22 05:17:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-22 05:17:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-22 05:17:41,911 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-22 05:17:41,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:41,911 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-22 05:17:41,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:17:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-22 05:17:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 05:17:41,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:41,915 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] [2020-08-22 05:17:41,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:17:41,915 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:41,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-22 05:17:41,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:41,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004582495] [2020-08-22 05:17:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,190 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:42,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:17:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:17:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 05:17:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 05:17:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:42,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004582495] [2020-08-22 05:17:42,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:42,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:17:42,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146445721] [2020-08-22 05:17:42,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:17:42,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:42,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:17:42,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:17:42,356 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-22 05:17:42,682 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:43,257 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:46,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:46,387 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-22 05:17:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 05:17:46,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-22 05:17:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:46,401 INFO L225 Difference]: With dead ends: 2919 [2020-08-22 05:17:46,401 INFO L226 Difference]: Without dead ends: 2084 [2020-08-22 05:17:46,405 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 [2020-08-22 05:17:46,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-22 05:17:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-22 05:17:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-22 05:17:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-22 05:17:46,718 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-22 05:17:46,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:46,719 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-22 05:17:46,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:17:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-22 05:17:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-22 05:17:46,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:46,723 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] [2020-08-22 05:17:46,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:17:46,724 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:46,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:46,724 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-22 05:17:46,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:46,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112632596] [2020-08-22 05:17:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,002 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:47,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:17:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:17:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:17:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 05:17:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:17:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:47,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112632596] [2020-08-22 05:17:47,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:47,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:17:47,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511938191] [2020-08-22 05:17:47,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:17:47,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:47,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:17:47,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:17:47,122 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-22 05:17:47,571 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:51,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:51,062 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-22 05:17:51,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 05:17:51,063 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-22 05:17:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:51,087 INFO L225 Difference]: With dead ends: 3491 [2020-08-22 05:17:51,088 INFO L226 Difference]: Without dead ends: 3488 [2020-08-22 05:17:51,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-22 05:17:51,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-22 05:17:51,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-22 05:17:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-22 05:17:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-22 05:17:51,818 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-22 05:17:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:51,821 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-22 05:17:51,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:17:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-22 05:17:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 05:17:51,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:51,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:17:51,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:17:51,836 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:51,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:51,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2137087651, now seen corresponding path program 1 times [2020-08-22 05:17:51,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:51,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544710540] [2020-08-22 05:17:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,203 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:52,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:17:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:17:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:17:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:17:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:17:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 05:17:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 05:17:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 05:17:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 05:17:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-08-22 05:17:52,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544710540] [2020-08-22 05:17:52,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:17:52,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 05:17:52,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064082094] [2020-08-22 05:17:52,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 05:17:52,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:52,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 05:17:52,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:17:52,453 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 14 states. [2020-08-22 05:17:52,978 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:53,226 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:53,462 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:54,059 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:55,666 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:57,931 INFO L93 Difference]: Finished difference Result 5611 states and 7325 transitions. [2020-08-22 05:17:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-22 05:17:57,931 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2020-08-22 05:17:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:57,950 INFO L225 Difference]: With dead ends: 5611 [2020-08-22 05:17:57,951 INFO L226 Difference]: Without dead ends: 3113 [2020-08-22 05:17:57,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=364, Invalid=1528, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 05:17:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2020-08-22 05:17:58,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 2736. [2020-08-22 05:17:58,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2020-08-22 05:17:58,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3204 transitions. [2020-08-22 05:17:58,559 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3204 transitions. Word has length 166 [2020-08-22 05:17:58,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:58,560 INFO L479 AbstractCegarLoop]: Abstraction has 2736 states and 3204 transitions. [2020-08-22 05:17:58,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 05:17:58,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3204 transitions. [2020-08-22 05:17:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-22 05:17:58,570 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:58,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:17:58,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:17:58,571 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:58,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:58,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-22 05:17:58,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:58,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939034495] [2020-08-22 05:17:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:58,986 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:58,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:17:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:17:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:17:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:17:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:17:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 05:17:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 05:17:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-22 05:17:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-22 05:17:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-22 05:17:59,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939034495] [2020-08-22 05:17:59,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:17:59,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:17:59,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139238176] [2020-08-22 05:17:59,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:17:59,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:59,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:17:59,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:17:59,279 INFO L87 Difference]: Start difference. First operand 2736 states and 3204 transitions. Second operand 10 states. [2020-08-22 05:18:00,388 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:18:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:02,776 INFO L93 Difference]: Finished difference Result 4533 states and 5525 transitions. [2020-08-22 05:18:02,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-22 05:18:02,777 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-08-22 05:18:02,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:02,788 INFO L225 Difference]: With dead ends: 4533 [2020-08-22 05:18:02,788 INFO L226 Difference]: Without dead ends: 1835 [2020-08-22 05:18:02,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 05:18:02,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-08-22 05:18:03,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1269. [2020-08-22 05:18:03,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-22 05:18:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1471 transitions. [2020-08-22 05:18:03,047 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1471 transitions. Word has length 171 [2020-08-22 05:18:03,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:03,048 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1471 transitions. [2020-08-22 05:18:03,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:18:03,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1471 transitions. [2020-08-22 05:18:03,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-22 05:18:03,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:03,053 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] [2020-08-22 05:18:03,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:18:03,054 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:03,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:03,054 INFO L82 PathProgramCache]: Analyzing trace with hash 177222806, now seen corresponding path program 1 times [2020-08-22 05:18:03,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:03,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942360445] [2020-08-22 05:18:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,371 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:03,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:18:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:18:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:18:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:18:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:18:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:18:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:18:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 05:18:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 05:18:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:18:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:18:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:18:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:18:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 05:18:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-22 05:18:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-22 05:18:03,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942360445] [2020-08-22 05:18:03,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:18:03,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 05:18:03,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494390507] [2020-08-22 05:18:03,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 05:18:03,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:03,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 05:18:03,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 05:18:03,741 INFO L87 Difference]: Start difference. First operand 1269 states and 1471 transitions. Second operand 19 states. [2020-08-22 05:18:04,358 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:18:04,776 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:18:05,083 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:18:05,342 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:18:06,139 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:18:06,766 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:07,201 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:09,675 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191