/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:53:09,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:53:09,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:53:09,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:53:09,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:53:09,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:53:09,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:53:09,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:53:09,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:53:09,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:53:09,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:53:09,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:53:09,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:53:09,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:53:09,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:53:09,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:53:09,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:53:09,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:53:09,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:53:09,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:53:09,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:53:09,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:53:09,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:53:09,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:53:09,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:53:09,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:53:09,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:53:09,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:53:09,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:53:09,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:53:09,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:53:09,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:53:09,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:53:09,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:53:09,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:53:09,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:53:09,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:53:09,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:53:09,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:53:09,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:53:09,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:53:09,403 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 [2020-08-19 01:53:09,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:53:09,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:53:09,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:53:09,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:53:09,442 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:53:09,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:53:09,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:53:09,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:53:09,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:53:09,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:53:09,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:53:09,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:53:09,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:53:09,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:53:09,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:53:09,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:53:09,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:53:09,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:53:09,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:53:09,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:53:09,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:53:09,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:53:09,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:53:09,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:53:09,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:53:09,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:53:09,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:53:09,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:53:09,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:53:09,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:53:09,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:53:09,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:53:09,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:53:09,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:53:09,792 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:53:09,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-19 01:53:09,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c90c811be/8b0896f416ff41dfbd9454b0e8b7c916/FLAG22389ae3f [2020-08-19 01:53:10,387 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:53:10,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-19 01:53:10,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c90c811be/8b0896f416ff41dfbd9454b0e8b7c916/FLAG22389ae3f [2020-08-19 01:53:10,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c90c811be/8b0896f416ff41dfbd9454b0e8b7c916 [2020-08-19 01:53:10,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:53:10,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:53:10,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:53:10,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:53:10,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:53:10,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:53:10" (1/1) ... [2020-08-19 01:53:10,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcf7d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:10, skipping insertion in model container [2020-08-19 01:53:10,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:53:10" (1/1) ... [2020-08-19 01:53:10,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:53:10,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:53:11,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:53:11,423 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:53:11,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:53:11,557 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:53:11,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:11 WrapperNode [2020-08-19 01:53:11,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:53:11,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:53:11,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:53:11,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:53:11,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:11" (1/1) ... [2020-08-19 01:53:11,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:11" (1/1) ... [2020-08-19 01:53:11,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:11" (1/1) ... [2020-08-19 01:53:11,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:11" (1/1) ... [2020-08-19 01:53:11,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:11" (1/1) ... [2020-08-19 01:53:11,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:11" (1/1) ... [2020-08-19 01:53:11,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:11" (1/1) ... [2020-08-19 01:53:11,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:53:11,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:53:11,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:53:11,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:53:11,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:11" (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 [2020-08-19 01:53:11,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:53:11,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:53:11,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:53:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:53:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:53:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:53:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:53:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:53:11,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:53:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:53:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:53:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:53:11,717 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:53:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:53:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:53:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:53:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:53:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:53:11,718 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:53:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:53:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:53:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:53:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:53:11,719 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:53:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:53:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 01:53:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:53:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:53:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:53:11,720 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:53:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:53:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:53:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:53:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:53:11,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:53:11,722 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:53:11,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:53:11,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 01:53:11,722 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 01:53:11,722 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 01:53:11,722 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:53:11,723 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:53:11,723 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:53:11,723 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:53:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:53:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:53:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:53:11,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:53:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:53:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:53:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:53:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:53:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:53:11,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:53:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:53:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:53:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:53:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:53:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:53:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:53:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:53:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:53:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:53:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:53:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:53:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:53:11,726 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:53:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:53:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:53:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:53:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:53:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:53:11,727 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:53:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:53:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:53:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:53:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:53:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:53:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:53:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:53:11,728 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:53:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:53:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:53:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:53:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:53:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:53:11,729 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:53:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 01:53:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 01:53:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 01:53:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:53:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:53:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:53:11,730 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:53:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:53:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:53:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 01:53:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:53:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:53:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:53:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:53:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:53:12,817 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:53:12,818 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:53:12,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:53:12 BoogieIcfgContainer [2020-08-19 01:53:12,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:53:12,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:53:12,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:53:12,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:53:12,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:53:10" (1/3) ... [2020-08-19 01:53:12,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6cf6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:53:12, skipping insertion in model container [2020-08-19 01:53:12,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:53:11" (2/3) ... [2020-08-19 01:53:12,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6cf6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:53:12, skipping insertion in model container [2020-08-19 01:53:12,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:53:12" (3/3) ... [2020-08-19 01:53:12,832 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2020-08-19 01:53:12,843 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:53:12,851 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:53:12,866 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:53:12,891 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:53:12,891 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:53:12,891 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:53:12,891 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:53:12,891 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:53:12,892 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:53:12,892 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:53:12,892 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:53:12,917 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-19 01:53:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:53:12,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:12,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:12,937 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:12,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times [2020-08-19 01:53:12,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:12,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11044866] [2020-08-19 01:53:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:13,588 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:13,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:13,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:13,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:13,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:13,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:13,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:13,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:13,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:13,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:53:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:13,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:53:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:13,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11044866] [2020-08-19 01:53:13,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:13,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:53:13,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236106952] [2020-08-19 01:53:13,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:53:13,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:13,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:53:13,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:53:13,799 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-19 01:53:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:14,997 INFO L93 Difference]: Finished difference Result 328 states and 422 transitions. [2020-08-19 01:53:14,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:53:14,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 01:53:14,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:15,013 INFO L225 Difference]: With dead ends: 328 [2020-08-19 01:53:15,014 INFO L226 Difference]: Without dead ends: 181 [2020-08-19 01:53:15,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:53:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-19 01:53:15,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-19 01:53:15,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-19 01:53:15,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2020-08-19 01:53:15,112 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59 [2020-08-19 01:53:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:15,113 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2020-08-19 01:53:15,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:53:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2020-08-19 01:53:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:53:15,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:15,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:15,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:53:15,121 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:15,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:15,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times [2020-08-19 01:53:15,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:15,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805591673] [2020-08-19 01:53:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:15,568 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:15,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:15,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:15,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:15,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:15,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:15,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:53:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:15,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:15,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:53:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:15,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:53:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:15,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805591673] [2020-08-19 01:53:15,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:15,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:53:15,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017007659] [2020-08-19 01:53:15,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:53:15,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:15,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:53:15,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:53:15,630 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 5 states. [2020-08-19 01:53:16,063 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:16,966 INFO L93 Difference]: Finished difference Result 263 states and 322 transitions. [2020-08-19 01:53:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:53:16,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 01:53:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:16,972 INFO L225 Difference]: With dead ends: 263 [2020-08-19 01:53:16,972 INFO L226 Difference]: Without dead ends: 171 [2020-08-19 01:53:16,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:53:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-19 01:53:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-19 01:53:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-19 01:53:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2020-08-19 01:53:17,017 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60 [2020-08-19 01:53:17,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:17,017 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2020-08-19 01:53:17,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:53:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2020-08-19 01:53:17,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 01:53:17,020 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:17,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:17,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:53:17,021 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:17,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:17,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times [2020-08-19 01:53:17,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:17,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970436488] [2020-08-19 01:53:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:17,335 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:17,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:17,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:17,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:17,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:17,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:17,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:17,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:53:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:17,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 01:53:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:17,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970436488] [2020-08-19 01:53:17,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:17,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:17,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314630533] [2020-08-19 01:53:17,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:17,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:17,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:17,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:17,442 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 9 states. [2020-08-19 01:53:17,837 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:18,184 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:18,433 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:18,661 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:19,560 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:21,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:21,405 INFO L93 Difference]: Finished difference Result 466 states and 577 transitions. [2020-08-19 01:53:21,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:53:21,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 01:53:21,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:21,411 INFO L225 Difference]: With dead ends: 466 [2020-08-19 01:53:21,411 INFO L226 Difference]: Without dead ends: 355 [2020-08-19 01:53:21,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:53:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-08-19 01:53:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 294. [2020-08-19 01:53:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-19 01:53:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2020-08-19 01:53:21,487 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65 [2020-08-19 01:53:21,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:21,488 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2020-08-19 01:53:21,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2020-08-19 01:53:21,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 01:53:21,491 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:21,491 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:21,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:53:21,492 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:21,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:21,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times [2020-08-19 01:53:21,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:21,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838864093] [2020-08-19 01:53:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,842 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:21,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:53:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:53:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 01:53:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:53:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:53:21,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838864093] [2020-08-19 01:53:21,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:21,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:21,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519476783] [2020-08-19 01:53:21,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:21,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:21,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:21,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:21,947 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 9 states. [2020-08-19 01:53:22,397 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:23,095 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:23,895 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:24,203 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:24,455 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:24,697 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:25,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:25,548 INFO L93 Difference]: Finished difference Result 755 states and 986 transitions. [2020-08-19 01:53:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:53:25,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 01:53:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:25,554 INFO L225 Difference]: With dead ends: 755 [2020-08-19 01:53:25,555 INFO L226 Difference]: Without dead ends: 489 [2020-08-19 01:53:25,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:53:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-08-19 01:53:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 421. [2020-08-19 01:53:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-08-19 01:53:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 507 transitions. [2020-08-19 01:53:25,673 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 507 transitions. Word has length 70 [2020-08-19 01:53:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:25,676 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 507 transitions. [2020-08-19 01:53:25,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:25,676 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 507 transitions. [2020-08-19 01:53:25,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:53:25,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:25,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:25,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:53:25,682 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:25,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:25,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times [2020-08-19 01:53:25,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:25,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179848369] [2020-08-19 01:53:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,961 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:25,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:25,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:53:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 01:53:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:53:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:26,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179848369] [2020-08-19 01:53:26,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:26,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:53:26,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131817535] [2020-08-19 01:53:26,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:53:26,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:26,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:53:26,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:53:26,106 INFO L87 Difference]: Start difference. First operand 421 states and 507 transitions. Second operand 9 states. [2020-08-19 01:53:27,301 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:27,566 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:27,833 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:28,061 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:28,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:28,903 INFO L93 Difference]: Finished difference Result 903 states and 1149 transitions. [2020-08-19 01:53:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:53:28,903 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-19 01:53:28,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:28,908 INFO L225 Difference]: With dead ends: 903 [2020-08-19 01:53:28,908 INFO L226 Difference]: Without dead ends: 510 [2020-08-19 01:53:28,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:53:28,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-08-19 01:53:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 434. [2020-08-19 01:53:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-08-19 01:53:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2020-08-19 01:53:28,990 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93 [2020-08-19 01:53:28,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:28,991 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2020-08-19 01:53:28,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:53:28,991 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2020-08-19 01:53:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:53:28,993 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:28,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:28,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:53:28,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:28,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times [2020-08-19 01:53:28,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:28,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752345738] [2020-08-19 01:53:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,263 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:29,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:53:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 01:53:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:53:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:29,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752345738] [2020-08-19 01:53:29,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:29,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:53:29,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124852249] [2020-08-19 01:53:29,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:53:29,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:29,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:53:29,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:53:29,465 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 11 states. [2020-08-19 01:53:30,094 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:30,338 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:30,575 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:31,367 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:31,672 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:31,949 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:32,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:32,873 INFO L93 Difference]: Finished difference Result 930 states and 1198 transitions. [2020-08-19 01:53:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:53:32,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 01:53:32,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:32,884 INFO L225 Difference]: With dead ends: 930 [2020-08-19 01:53:32,884 INFO L226 Difference]: Without dead ends: 524 [2020-08-19 01:53:32,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:53:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-08-19 01:53:32,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 442. [2020-08-19 01:53:32,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-19 01:53:32,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions. [2020-08-19 01:53:32,983 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93 [2020-08-19 01:53:32,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:32,984 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 529 transitions. [2020-08-19 01:53:32,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:53:32,984 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions. [2020-08-19 01:53:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:53:32,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:32,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:32,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:53:32,990 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:32,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:32,991 INFO L82 PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times [2020-08-19 01:53:32,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:32,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514441748] [2020-08-19 01:53:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,294 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:33,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:53:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 01:53:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:53:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:33,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514441748] [2020-08-19 01:53:33,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:33,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:53:33,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865029008] [2020-08-19 01:53:33,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:53:33,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:33,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:53:33,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:53:33,505 INFO L87 Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 7 states. [2020-08-19 01:53:33,833 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:34,356 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:36,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:36,464 INFO L93 Difference]: Finished difference Result 1411 states and 1828 transitions. [2020-08-19 01:53:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:53:36,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-19 01:53:36,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:36,474 INFO L225 Difference]: With dead ends: 1411 [2020-08-19 01:53:36,474 INFO L226 Difference]: Without dead ends: 997 [2020-08-19 01:53:36,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:53:36,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-08-19 01:53:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 919. [2020-08-19 01:53:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-08-19 01:53:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1115 transitions. [2020-08-19 01:53:36,723 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1115 transitions. Word has length 93 [2020-08-19 01:53:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:36,724 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1115 transitions. [2020-08-19 01:53:36,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:53:36,724 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1115 transitions. [2020-08-19 01:53:36,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 01:53:36,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:36,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:36,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:53:36,728 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:36,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:36,728 INFO L82 PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times [2020-08-19 01:53:36,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:36,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263385121] [2020-08-19 01:53:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,129 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:37,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:53:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 01:53:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 01:53:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 01:53:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:53:37,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263385121] [2020-08-19 01:53:37,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:53:37,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:53:37,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875099363] [2020-08-19 01:53:37,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:53:37,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:37,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:53:37,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:53:37,344 INFO L87 Difference]: Start difference. First operand 919 states and 1115 transitions. Second operand 12 states. [2020-08-19 01:53:38,110 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:38,816 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:39,495 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:39,810 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:40,061 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:40,338 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:40,592 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:42,745 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:43,019 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:43,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:43,578 INFO L93 Difference]: Finished difference Result 2611 states and 3380 transitions. [2020-08-19 01:53:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 01:53:43,579 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-19 01:53:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:43,592 INFO L225 Difference]: With dead ends: 2611 [2020-08-19 01:53:43,592 INFO L226 Difference]: Without dead ends: 1912 [2020-08-19 01:53:43,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 01:53:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-08-19 01:53:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1606. [2020-08-19 01:53:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-19 01:53:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1936 transitions. [2020-08-19 01:53:43,912 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1936 transitions. Word has length 97 [2020-08-19 01:53:43,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:43,912 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 1936 transitions. [2020-08-19 01:53:43,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:53:43,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1936 transitions. [2020-08-19 01:53:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-19 01:53:43,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:43,917 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] [2020-08-19 01:53:43,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:53:43,917 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:43,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times [2020-08-19 01:53:43,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:43,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890024405] [2020-08-19 01:53:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,206 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:53:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:53:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 01:53:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 01:53:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 01:53:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:53:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-19 01:53:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 01:53:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 01:53:44,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890024405] [2020-08-19 01:53:44,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:53:44,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:53:44,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226437902] [2020-08-19 01:53:44,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:53:44,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:44,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:53:44,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:53:44,524 INFO L87 Difference]: Start difference. First operand 1606 states and 1936 transitions. Second operand 16 states. [2020-08-19 01:53:45,394 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:45,779 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:53:46,059 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:53:46,315 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:53:46,988 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:47,269 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:47,617 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:47,905 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:49,063 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:49,759 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:50,054 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:53:50,366 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:50,936 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:51,317 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:51,680 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:52,460 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:52,790 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:53:53,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:53,612 INFO L93 Difference]: Finished difference Result 3483 states and 4326 transitions. [2020-08-19 01:53:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-19 01:53:53,613 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2020-08-19 01:53:53,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:53,625 INFO L225 Difference]: With dead ends: 3483 [2020-08-19 01:53:53,625 INFO L226 Difference]: Without dead ends: 2085 [2020-08-19 01:53:53,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-19 01:53:53,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-08-19 01:53:54,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1893. [2020-08-19 01:53:54,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-08-19 01:53:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2238 transitions. [2020-08-19 01:53:54,039 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2238 transitions. Word has length 159 [2020-08-19 01:53:54,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:53:54,040 INFO L479 AbstractCegarLoop]: Abstraction has 1893 states and 2238 transitions. [2020-08-19 01:53:54,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:53:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2238 transitions. [2020-08-19 01:53:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-08-19 01:53:54,054 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:53:54,055 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:53:54,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:53:54,055 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:53:54,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:53:54,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1275093309, now seen corresponding path program 1 times [2020-08-19 01:53:54,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:53:54,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355412618] [2020-08-19 01:53:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:53:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,341 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:53:54,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:53:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:53:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:53:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:53:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:53:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:53:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:53:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:53:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 01:53:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:53:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:53:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:53:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-19 01:53:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:53:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:53:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:53:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:53:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-19 01:53:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-08-19 01:53:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:53:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-08-19 01:53:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:53:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:53:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:53:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-19 01:53:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:54,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-19 01:53:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:53:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-08-19 01:53:55,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355412618] [2020-08-19 01:53:55,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:53:55,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:53:55,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220007288] [2020-08-19 01:53:55,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:53:55,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:53:55,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:53:55,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:53:55,003 INFO L87 Difference]: Start difference. First operand 1893 states and 2238 transitions. Second operand 15 states. [2020-08-19 01:53:56,376 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:53:56,657 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:56,907 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:57,145 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:53:58,053 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:53:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:53:59,675 INFO L93 Difference]: Finished difference Result 5185 states and 6381 transitions. [2020-08-19 01:53:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:53:59,678 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 281 [2020-08-19 01:53:59,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:53:59,698 INFO L225 Difference]: With dead ends: 5185 [2020-08-19 01:53:59,698 INFO L226 Difference]: Without dead ends: 3002 [2020-08-19 01:53:59,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-19 01:53:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2020-08-19 01:54:00,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2604. [2020-08-19 01:54:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2020-08-19 01:54:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3157 transitions. [2020-08-19 01:54:00,236 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3157 transitions. Word has length 281 [2020-08-19 01:54:00,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:54:00,237 INFO L479 AbstractCegarLoop]: Abstraction has 2604 states and 3157 transitions. [2020-08-19 01:54:00,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:54:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3157 transitions. [2020-08-19 01:54:00,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-19 01:54:00,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:00,249 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:00,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:54:00,249 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:00,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:00,249 INFO L82 PathProgramCache]: Analyzing trace with hash 154824420, now seen corresponding path program 1 times [2020-08-19 01:54:00,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:00,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642095235] [2020-08-19 01:54:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,625 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:54:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:54:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:54:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:54:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:54:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:54:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:54:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:54:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:54:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:54:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:54:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 01:54:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:54:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:54:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:54:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:54:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:54:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-19 01:54:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:54:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:54:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:54:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:54:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-19 01:54:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-19 01:54:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:54:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:54:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:54:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-19 01:54:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:00,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 01:54:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-19 01:54:01,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642095235] [2020-08-19 01:54:01,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:54:01,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:54:01,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814323874] [2020-08-19 01:54:01,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:54:01,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:54:01,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:54:01,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:54:01,080 INFO L87 Difference]: Start difference. First operand 2604 states and 3157 transitions. Second operand 16 states. [2020-08-19 01:54:01,716 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:54:02,033 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:54:02,282 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:54:02,525 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:54:03,262 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:54:04,292 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:54:04,585 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:54:04,822 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:54:05,347 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:54:06,128 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:54:06,409 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191