/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:17:59,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:17:59,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:17:59,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:17:59,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:17:59,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:17:59,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:17:59,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:17:59,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:17:59,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:17:59,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:17:59,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:17:59,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:17:59,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:17:59,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:17:59,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:17:59,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:17:59,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:17:59,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:17:59,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:17:59,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:17:59,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:17:59,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:17:59,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:17:59,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:17:59,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:17:59,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:17:59,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:17:59,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:17:59,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:17:59,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:17:59,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:17:59,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:17:59,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:17:59,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:17:59,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:17:59,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:17:59,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:17:59,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:17:59,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:17:59,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:17:59,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 01:17:59,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:17:59,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:17:59,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:17:59,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:17:59,538 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:17:59,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:17:59,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:17:59,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:17:59,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:17:59,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:17:59,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:17:59,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:17:59,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:17:59,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:17:59,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:17:59,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:17:59,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:17:59,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:17:59,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:17:59,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:17:59,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:17:59,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:17:59,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:17:59,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:17:59,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:17:59,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:17:59,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:17:59,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:17:59,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:17:59,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:17:59,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:17:59,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:17:59,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:17:59,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:17:59,882 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:17:59,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-22 01:17:59,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b915cad78/7c9d586c8a4f4028973b434926b9f4f6/FLAG096a2ffa8 [2020-08-22 01:18:00,518 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:18:00,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-22 01:18:00,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b915cad78/7c9d586c8a4f4028973b434926b9f4f6/FLAG096a2ffa8 [2020-08-22 01:18:00,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b915cad78/7c9d586c8a4f4028973b434926b9f4f6 [2020-08-22 01:18:00,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:18:00,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:18:00,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:18:00,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:18:00,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:18:00,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:18:00" (1/1) ... [2020-08-22 01:18:00,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcb5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:18:00, skipping insertion in model container [2020-08-22 01:18:00,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:18:00" (1/1) ... [2020-08-22 01:18:00,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:18:00,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:18:01,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:18:01,290 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:18:01,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:18:01,552 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:18:01,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:18:01 WrapperNode [2020-08-22 01:18:01,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:18:01,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:18:01,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:18:01,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:18:01,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:18:01" (1/1) ... [2020-08-22 01:18:01,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:18:01" (1/1) ... [2020-08-22 01:18:01,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:18:01" (1/1) ... [2020-08-22 01:18:01,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:18:01" (1/1) ... [2020-08-22 01:18:01,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:18:01" (1/1) ... [2020-08-22 01:18:01,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:18:01" (1/1) ... [2020-08-22 01:18:01,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:18:01" (1/1) ... [2020-08-22 01:18:01,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:18:01,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:18:01,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:18:01,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:18:01,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:18:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:18:01,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:18:01,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:18:01,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:18:01,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:18:01,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:18:01,715 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:18:01,715 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:18:01,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 01:18:01,715 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:18:01,716 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:18:01,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:18:01,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:18:01,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:18:01,717 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:18:01,717 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:18:01,717 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:18:01,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:18:01,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:18:01,718 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:18:01,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:18:01,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 01:18:01,718 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:18:01,718 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:18:01,719 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:18:01,719 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:18:01,719 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:18:01,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:18:01,720 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:18:01,720 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:18:01,720 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:18:01,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:18:01,720 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:18:01,722 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:18:01,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:18:01,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 01:18:01,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:18:01,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:18:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:18:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:18:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:18:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:18:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:18:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:18:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:18:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:18:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:18:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:18:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:18:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:18:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:18:01,756 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:18:01,756 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:18:01,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 01:18:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:18:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:18:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:18:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:18:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:18:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:18:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:18:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:18:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:18:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:18:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 01:18:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:18:01,759 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:18:01,759 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:18:01,759 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:18:01,759 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:18:01,759 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:18:01,759 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:18:01,761 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 01:18:01,761 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:18:01,761 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:18:01,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:18:01,761 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:18:01,762 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:18:01,762 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:18:01,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:18:01,762 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:18:01,762 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:18:01,762 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:18:01,762 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:18:01,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:18:01,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:18:01,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:18:01,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:18:01,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:18:01,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:18:01,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:18:01,763 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:18:01,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:18:01,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:18:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:18:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:18:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:18:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:18:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:18:02,962 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:18:02,962 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:18:02,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:18:02 BoogieIcfgContainer [2020-08-22 01:18:02,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:18:02,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:18:02,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:18:02,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:18:02,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:18:00" (1/3) ... [2020-08-22 01:18:02,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f36d0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:18:02, skipping insertion in model container [2020-08-22 01:18:02,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:18:01" (2/3) ... [2020-08-22 01:18:02,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f36d0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:18:02, skipping insertion in model container [2020-08-22 01:18:02,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:18:02" (3/3) ... [2020-08-22 01:18:02,986 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2020-08-22 01:18:02,997 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:18:03,005 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:18:03,018 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:18:03,040 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:18:03,040 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:18:03,041 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:18:03,041 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:18:03,041 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:18:03,041 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:18:03,041 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:18:03,041 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:18:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-22 01:18:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 01:18:03,075 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:03,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:03,077 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:03,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:03,082 INFO L82 PathProgramCache]: Analyzing trace with hash -589768967, now seen corresponding path program 1 times [2020-08-22 01:18:03,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:03,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250613604] [2020-08-22 01:18:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,812 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:18:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:18:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:03,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:18:03,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250613604] [2020-08-22 01:18:03,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:18:03,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:18:03,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344897854] [2020-08-22 01:18:03,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:18:03,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:03,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:18:03,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:18:03,970 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-22 01:18:05,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:05,285 INFO L93 Difference]: Finished difference Result 343 states and 441 transitions. [2020-08-22 01:18:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:18:05,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 01:18:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:05,308 INFO L225 Difference]: With dead ends: 343 [2020-08-22 01:18:05,309 INFO L226 Difference]: Without dead ends: 185 [2020-08-22 01:18:05,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:18:05,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-22 01:18:05,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 149. [2020-08-22 01:18:05,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-22 01:18:05,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2020-08-22 01:18:05,439 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 46 [2020-08-22 01:18:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:05,440 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2020-08-22 01:18:05,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:18:05,440 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2020-08-22 01:18:05,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 01:18:05,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:05,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:05,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:18:05,445 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:05,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:05,445 INFO L82 PathProgramCache]: Analyzing trace with hash -211037911, now seen corresponding path program 1 times [2020-08-22 01:18:05,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:05,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970219879] [2020-08-22 01:18:05,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,790 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:05,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:18:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:18:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:18:05,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970219879] [2020-08-22 01:18:05,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:18:05,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:18:05,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294306004] [2020-08-22 01:18:05,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:18:05,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:05,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:18:05,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:18:05,841 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand 4 states. [2020-08-22 01:18:06,285 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:07,315 INFO L93 Difference]: Finished difference Result 270 states and 324 transitions. [2020-08-22 01:18:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:18:07,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 01:18:07,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:07,321 INFO L225 Difference]: With dead ends: 270 [2020-08-22 01:18:07,321 INFO L226 Difference]: Without dead ends: 169 [2020-08-22 01:18:07,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:18:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-22 01:18:07,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-08-22 01:18:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-22 01:18:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2020-08-22 01:18:07,360 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 47 [2020-08-22 01:18:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:07,361 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2020-08-22 01:18:07,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:18:07,361 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2020-08-22 01:18:07,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 01:18:07,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:07,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:07,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:18:07,364 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:07,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:07,364 INFO L82 PathProgramCache]: Analyzing trace with hash 607971640, now seen corresponding path program 1 times [2020-08-22 01:18:07,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:07,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963431267] [2020-08-22 01:18:07,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:07,719 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:07,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:07,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:07,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:07,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:07,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:07,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:18:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:07,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:18:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:18:07,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963431267] [2020-08-22 01:18:07,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:18:07,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:18:07,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714957951] [2020-08-22 01:18:07,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:18:07,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:07,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:18:07,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:18:07,888 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand 8 states. [2020-08-22 01:18:08,244 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:08,544 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:08,799 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:09,089 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:09,800 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:11,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:11,935 INFO L93 Difference]: Finished difference Result 476 states and 582 transitions. [2020-08-22 01:18:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:18:11,938 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 01:18:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:11,943 INFO L225 Difference]: With dead ends: 476 [2020-08-22 01:18:11,943 INFO L226 Difference]: Without dead ends: 360 [2020-08-22 01:18:11,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 01:18:11,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-22 01:18:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2020-08-22 01:18:12,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-08-22 01:18:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 356 transitions. [2020-08-22 01:18:12,027 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 356 transitions. Word has length 51 [2020-08-22 01:18:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:12,027 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 356 transitions. [2020-08-22 01:18:12,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:18:12,028 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 356 transitions. [2020-08-22 01:18:12,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 01:18:12,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:12,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:12,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:18:12,042 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:12,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:12,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1795694260, now seen corresponding path program 1 times [2020-08-22 01:18:12,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:12,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203419177] [2020-08-22 01:18:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:12,468 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:12,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:12,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:12,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:12,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:18:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:12,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:18:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:18:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:18:12,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203419177] [2020-08-22 01:18:12,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:18:12,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 01:18:12,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307801402] [2020-08-22 01:18:12,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:18:12,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:12,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:18:12,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:18:12,599 INFO L87 Difference]: Start difference. First operand 298 states and 356 transitions. Second operand 12 states. [2020-08-22 01:18:13,037 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:13,395 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:13,660 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:13,905 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:14,463 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:15,475 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:15,892 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:18:16,289 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:18:16,564 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:18:16,877 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:17,270 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:18:17,614 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:18:18,028 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:20,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:20,239 INFO L93 Difference]: Finished difference Result 1213 states and 1632 transitions. [2020-08-22 01:18:20,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 01:18:20,240 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 01:18:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:20,249 INFO L225 Difference]: With dead ends: 1213 [2020-08-22 01:18:20,249 INFO L226 Difference]: Without dead ends: 939 [2020-08-22 01:18:20,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 01:18:20,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-22 01:18:20,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 842. [2020-08-22 01:18:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-08-22 01:18:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1054 transitions. [2020-08-22 01:18:20,483 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1054 transitions. Word has length 57 [2020-08-22 01:18:20,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:20,483 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1054 transitions. [2020-08-22 01:18:20,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:18:20,484 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1054 transitions. [2020-08-22 01:18:20,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 01:18:20,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:20,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:20,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:18:20,488 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:20,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2070558330, now seen corresponding path program 1 times [2020-08-22 01:18:20,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:20,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558475688] [2020-08-22 01:18:20,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:20,786 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:20,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:20,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:20,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:20,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:20,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:20,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:18:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:20,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:18:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:20,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:18:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:20,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:18:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:18:20,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558475688] [2020-08-22 01:18:20,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:18:20,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:18:20,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631676597] [2020-08-22 01:18:20,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:18:20,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:20,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:18:20,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:18:20,888 INFO L87 Difference]: Start difference. First operand 842 states and 1054 transitions. Second operand 6 states. [2020-08-22 01:18:21,216 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:23,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:23,275 INFO L93 Difference]: Finished difference Result 1979 states and 2649 transitions. [2020-08-22 01:18:23,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 01:18:23,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 01:18:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:23,285 INFO L225 Difference]: With dead ends: 1979 [2020-08-22 01:18:23,286 INFO L226 Difference]: Without dead ends: 1161 [2020-08-22 01:18:23,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:18:23,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2020-08-22 01:18:23,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1074. [2020-08-22 01:18:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-08-22 01:18:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1340 transitions. [2020-08-22 01:18:23,532 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1340 transitions. Word has length 61 [2020-08-22 01:18:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:23,533 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1340 transitions. [2020-08-22 01:18:23,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:18:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1340 transitions. [2020-08-22 01:18:23,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 01:18:23,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:23,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:23,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:18:23,540 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:23,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:23,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1347234794, now seen corresponding path program 1 times [2020-08-22 01:18:23,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:23,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105537904] [2020-08-22 01:18:23,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:23,885 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:23,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:23,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:23,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:23,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:23,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:23,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:18:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:24,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 01:18:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:24,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:24,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:18:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:24,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 01:18:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:24,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 01:18:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 01:18:24,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105537904] [2020-08-22 01:18:24,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:24,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:18:24,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786940727] [2020-08-22 01:18:24,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:18:24,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:24,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:18:24,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:18:24,066 INFO L87 Difference]: Start difference. First operand 1074 states and 1340 transitions. Second operand 10 states. [2020-08-22 01:18:24,733 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 01:18:25,296 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:27,515 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:29,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:29,397 INFO L93 Difference]: Finished difference Result 2051 states and 2661 transitions. [2020-08-22 01:18:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 01:18:29,398 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 01:18:29,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:29,410 INFO L225 Difference]: With dead ends: 2051 [2020-08-22 01:18:29,410 INFO L226 Difference]: Without dead ends: 1278 [2020-08-22 01:18:29,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 01:18:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-08-22 01:18:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1181. [2020-08-22 01:18:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-08-22 01:18:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1451 transitions. [2020-08-22 01:18:29,715 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1451 transitions. Word has length 88 [2020-08-22 01:18:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:29,717 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1451 transitions. [2020-08-22 01:18:29,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:18:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1451 transitions. [2020-08-22 01:18:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 01:18:29,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:29,723 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:29,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:18:29,724 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:29,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:29,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1802078625, now seen corresponding path program 1 times [2020-08-22 01:18:29,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:29,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497236878] [2020-08-22 01:18:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,027 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:30,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:18:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:18:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 01:18:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 01:18:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 01:18:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 01:18:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 01:18:30,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497236878] [2020-08-22 01:18:30,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:30,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 01:18:30,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398718593] [2020-08-22 01:18:30,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:18:30,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:30,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:18:30,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:18:30,235 INFO L87 Difference]: Start difference. First operand 1181 states and 1451 transitions. Second operand 9 states. [2020-08-22 01:18:31,397 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:31,612 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:31,863 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:33,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:33,075 INFO L93 Difference]: Finished difference Result 2161 states and 2784 transitions. [2020-08-22 01:18:33,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:18:33,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 147 [2020-08-22 01:18:33,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:33,086 INFO L225 Difference]: With dead ends: 2161 [2020-08-22 01:18:33,087 INFO L226 Difference]: Without dead ends: 1304 [2020-08-22 01:18:33,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:18:33,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-08-22 01:18:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1181. [2020-08-22 01:18:33,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-08-22 01:18:33,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1449 transitions. [2020-08-22 01:18:33,443 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1449 transitions. Word has length 147 [2020-08-22 01:18:33,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:33,444 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1449 transitions. [2020-08-22 01:18:33,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:18:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1449 transitions. [2020-08-22 01:18:33,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-22 01:18:33,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:33,450 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:33,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:18:33,450 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:33,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:33,451 INFO L82 PathProgramCache]: Analyzing trace with hash 321074684, now seen corresponding path program 1 times [2020-08-22 01:18:33,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:33,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331177076] [2020-08-22 01:18:33,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,703 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:33,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:18:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:18:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 01:18:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:18:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 01:18:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 01:18:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 01:18:33,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331177076] [2020-08-22 01:18:33,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:33,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:18:33,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29561662] [2020-08-22 01:18:33,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:18:33,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:33,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:18:33,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:18:33,948 INFO L87 Difference]: Start difference. First operand 1181 states and 1449 transitions. Second operand 10 states. [2020-08-22 01:18:35,060 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:35,322 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:18:35,593 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:35,850 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:37,127 INFO L93 Difference]: Finished difference Result 2481 states and 3186 transitions. [2020-08-22 01:18:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:18:37,128 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-22 01:18:37,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:37,136 INFO L225 Difference]: With dead ends: 2481 [2020-08-22 01:18:37,136 INFO L226 Difference]: Without dead ends: 1324 [2020-08-22 01:18:37,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:18:37,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2020-08-22 01:18:37,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1201. [2020-08-22 01:18:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2020-08-22 01:18:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1471 transitions. [2020-08-22 01:18:37,410 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1471 transitions. Word has length 143 [2020-08-22 01:18:37,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:37,410 INFO L479 AbstractCegarLoop]: Abstraction has 1201 states and 1471 transitions. [2020-08-22 01:18:37,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:18:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1471 transitions. [2020-08-22 01:18:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 01:18:37,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:37,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:37,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:18:37,419 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:37,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:37,419 INFO L82 PathProgramCache]: Analyzing trace with hash 183103711, now seen corresponding path program 1 times [2020-08-22 01:18:37,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:37,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976313618] [2020-08-22 01:18:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,691 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:18:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:18:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 01:18:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 01:18:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 01:18:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 01:18:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 01:18:37,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976313618] [2020-08-22 01:18:37,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:37,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:18:37,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732510474] [2020-08-22 01:18:37,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:18:37,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:37,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:18:37,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:18:37,857 INFO L87 Difference]: Start difference. First operand 1201 states and 1471 transitions. Second operand 10 states. [2020-08-22 01:18:40,221 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:40,461 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:18:40,715 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:40,968 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:41,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:41,497 INFO L93 Difference]: Finished difference Result 2209 states and 2790 transitions. [2020-08-22 01:18:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 01:18:41,501 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-22 01:18:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:41,509 INFO L225 Difference]: With dead ends: 2209 [2020-08-22 01:18:41,509 INFO L226 Difference]: Without dead ends: 1348 [2020-08-22 01:18:41,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:18:41,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-08-22 01:18:41,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1237. [2020-08-22 01:18:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1237 states. [2020-08-22 01:18:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1519 transitions. [2020-08-22 01:18:41,739 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1519 transitions. Word has length 147 [2020-08-22 01:18:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:41,741 INFO L479 AbstractCegarLoop]: Abstraction has 1237 states and 1519 transitions. [2020-08-22 01:18:41,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:18:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1519 transitions. [2020-08-22 01:18:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 01:18:41,745 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:41,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:41,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:18:41,746 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:41,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:41,746 INFO L82 PathProgramCache]: Analyzing trace with hash -326369379, now seen corresponding path program 1 times [2020-08-22 01:18:41,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:41,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191868072] [2020-08-22 01:18:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,102 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:42,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:18:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:18:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 01:18:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 01:18:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 01:18:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 01:18:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 01:18:42,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191868072] [2020-08-22 01:18:42,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:42,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 01:18:42,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399224848] [2020-08-22 01:18:42,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 01:18:42,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:42,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 01:18:42,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:18:42,295 INFO L87 Difference]: Start difference. First operand 1237 states and 1519 transitions. Second operand 10 states. [2020-08-22 01:18:43,082 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:44,982 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:45,240 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:45,478 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:45,721 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:46,008 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:46,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:46,624 INFO L93 Difference]: Finished difference Result 1369 states and 1739 transitions. [2020-08-22 01:18:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:18:46,625 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-22 01:18:46,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:46,634 INFO L225 Difference]: With dead ends: 1369 [2020-08-22 01:18:46,634 INFO L226 Difference]: Without dead ends: 1366 [2020-08-22 01:18:46,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:18:46,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2020-08-22 01:18:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1237. [2020-08-22 01:18:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1237 states. [2020-08-22 01:18:46,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1514 transitions. [2020-08-22 01:18:46,917 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1514 transitions. Word has length 147 [2020-08-22 01:18:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:46,918 INFO L479 AbstractCegarLoop]: Abstraction has 1237 states and 1514 transitions. [2020-08-22 01:18:46,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 01:18:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1514 transitions. [2020-08-22 01:18:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-22 01:18:46,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:46,923 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:46,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:18:46,924 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:46,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1455245859, now seen corresponding path program 1 times [2020-08-22 01:18:46,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:46,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337785964] [2020-08-22 01:18:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,336 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:47,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:18:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:18:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 01:18:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 01:18:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 01:18:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 01:18:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-22 01:18:47,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337785964] [2020-08-22 01:18:47,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:47,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 01:18:47,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806604624] [2020-08-22 01:18:47,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:18:47,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:47,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:18:47,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:18:47,564 INFO L87 Difference]: Start difference. First operand 1237 states and 1514 transitions. Second operand 12 states. [2020-08-22 01:18:48,142 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:48,375 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:48,607 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:49,240 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:49,502 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:49,739 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:18:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:50,955 INFO L93 Difference]: Finished difference Result 2269 states and 2863 transitions. [2020-08-22 01:18:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:18:50,955 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 147 [2020-08-22 01:18:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:50,962 INFO L225 Difference]: With dead ends: 2269 [2020-08-22 01:18:50,962 INFO L226 Difference]: Without dead ends: 1056 [2020-08-22 01:18:50,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:18:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-22 01:18:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1000. [2020-08-22 01:18:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-08-22 01:18:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1199 transitions. [2020-08-22 01:18:51,167 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1199 transitions. Word has length 147 [2020-08-22 01:18:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:51,167 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1199 transitions. [2020-08-22 01:18:51,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:18:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1199 transitions. [2020-08-22 01:18:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 01:18:51,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:51,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:51,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 01:18:51,173 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:51,174 INFO L82 PathProgramCache]: Analyzing trace with hash 154971906, now seen corresponding path program 1 times [2020-08-22 01:18:51,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:51,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771782160] [2020-08-22 01:18:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,488 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:18:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:18:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 01:18:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 01:18:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 01:18:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 01:18:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 01:18:51,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771782160] [2020-08-22 01:18:51,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:51,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 01:18:51,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860998513] [2020-08-22 01:18:51,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:18:51,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:51,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:18:51,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:18:51,705 INFO L87 Difference]: Start difference. First operand 1000 states and 1199 transitions. Second operand 12 states. [2020-08-22 01:18:52,139 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:52,763 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:53,336 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:53,728 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:54,002 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:54,254 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:18:54,568 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:18:54,853 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:18:56,928 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:18:57,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:18:57,913 INFO L93 Difference]: Finished difference Result 2405 states and 3114 transitions. [2020-08-22 01:18:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 01:18:57,914 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-08-22 01:18:57,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:18:57,924 INFO L225 Difference]: With dead ends: 2405 [2020-08-22 01:18:57,925 INFO L226 Difference]: Without dead ends: 1584 [2020-08-22 01:18:57,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-22 01:18:57,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2020-08-22 01:18:58,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1334. [2020-08-22 01:18:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-08-22 01:18:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1633 transitions. [2020-08-22 01:18:58,236 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1633 transitions. Word has length 151 [2020-08-22 01:18:58,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:18:58,236 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 1633 transitions. [2020-08-22 01:18:58,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:18:58,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1633 transitions. [2020-08-22 01:18:58,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-22 01:18:58,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:18:58,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:18:58,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 01:18:58,247 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:18:58,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:18:58,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1326265885, now seen corresponding path program 2 times [2020-08-22 01:18:58,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:18:58,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341285873] [2020-08-22 01:18:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:18:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,677 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:18:58,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:18:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:18:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:18:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 01:18:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:18:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:18:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:18:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:18:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 01:18:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:18:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:18:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-22 01:18:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-22 01:18:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:18:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:18:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:59,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:18:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:59,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-22 01:18:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:59,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-22 01:18:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:18:59,050 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-22 01:18:59,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341285873] [2020-08-22 01:18:59,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:18:59,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 01:18:59,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677869920] [2020-08-22 01:18:59,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 01:18:59,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:18:59,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 01:18:59,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-22 01:18:59,053 INFO L87 Difference]: Start difference. First operand 1334 states and 1633 transitions. Second operand 13 states. [2020-08-22 01:19:00,220 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186