/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:24:09,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:24:09,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:24:09,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:24:09,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:24:09,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:24:09,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:24:09,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:24:09,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:24:09,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:24:09,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:24:09,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:24:09,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:24:09,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:24:09,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:24:09,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:24:09,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:24:09,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:24:09,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:24:09,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:24:09,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:24:09,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:24:09,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:24:09,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:24:09,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:24:09,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:24:09,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:24:09,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:24:09,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:24:09,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:24:09,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:24:09,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:24:09,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:24:09,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:24:09,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:24:09,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:24:09,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:24:09,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:24:09,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:24:09,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:24:09,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:24:09,793 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 00:24:09,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:24:09,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:24:09,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:24:09,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:24:09,824 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:24:09,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:24:09,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:24:09,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:24:09,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:24:09,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:24:09,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:24:09,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:24:09,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:24:09,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:24:09,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:24:09,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:24:09,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:24:09,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:24:09,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:24:09,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:24:09,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:24:09,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:24:09,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:24:09,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:24:09,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:24:09,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:24:09,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:24:09,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:24:09,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:24:09,829 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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-08-22 00:24:10,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:24:10,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:24:10,154 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:24:10,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:24:10,156 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:24:10,157 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-22 00:24:10,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dafede831/1e41fe832df046dfa2ef3990b5642e9e/FLAGf82bc6904 [2020-08-22 00:24:10,732 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:24:10,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-22 00:24:10,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dafede831/1e41fe832df046dfa2ef3990b5642e9e/FLAGf82bc6904 [2020-08-22 00:24:11,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dafede831/1e41fe832df046dfa2ef3990b5642e9e [2020-08-22 00:24:11,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:24:11,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:24:11,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:24:11,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:24:11,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:24:11,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:24:11" (1/1) ... [2020-08-22 00:24:11,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:24:11, skipping insertion in model container [2020-08-22 00:24:11,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:24:11" (1/1) ... [2020-08-22 00:24:11,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:24:11,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:24:11,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:24:11,612 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:24:11,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:24:11,764 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:24:11,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:24:11 WrapperNode [2020-08-22 00:24:11,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:24:11,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:24:11,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:24:11,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:24:11,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:24:11" (1/1) ... [2020-08-22 00:24:11,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:24:11" (1/1) ... [2020-08-22 00:24:11,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:24:11" (1/1) ... [2020-08-22 00:24:11,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:24:11" (1/1) ... [2020-08-22 00:24:11,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:24:11" (1/1) ... [2020-08-22 00:24:11,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:24:11" (1/1) ... [2020-08-22 00:24:11,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:24:11" (1/1) ... [2020-08-22 00:24:11,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:24:11,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:24:11,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:24:11,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:24:11,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:24:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:24:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:24:11,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:24:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:24:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:24:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:24:11,943 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:24:11,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:24:11,944 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:24:11,945 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:24:11,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 00:24:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:24:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:24:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:24:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:24:11,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:24:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 00:24:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 00:24:11,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:24:11,948 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:24:11,948 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:24:11,948 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:24:11,949 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 00:24:11,949 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:24:11,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:24:11,950 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:24:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:24:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:24:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:24:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 00:24:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 00:24:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:24:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:24:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:24:11,953 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:24:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:24:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:24:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:24:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:24:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:24:11,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:24:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:24:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:24:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:24:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:24:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:24:11,955 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:24:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:24:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:24:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:24:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 00:24:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:24:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:24:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:24:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:24:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:24:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:24:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 00:24:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:24:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:24:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:24:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:24:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:24:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:24:11,959 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:24:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:24:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 00:24:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 00:24:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:24:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:24:11,960 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:24:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:24:11,961 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 00:24:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 00:24:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:24:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:24:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:24:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:24:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:24:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:24:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:24:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:24:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:24:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:24:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:24:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:24:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:24:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:24:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:24:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:24:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:24:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:24:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:24:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:24:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:24:13,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:24:13,035 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:24:13,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:24:13 BoogieIcfgContainer [2020-08-22 00:24:13,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:24:13,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:24:13,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:24:13,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:24:13,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:24:11" (1/3) ... [2020-08-22 00:24:13,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f601819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:24:13, skipping insertion in model container [2020-08-22 00:24:13,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:24:11" (2/3) ... [2020-08-22 00:24:13,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f601819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:24:13, skipping insertion in model container [2020-08-22 00:24:13,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:24:13" (3/3) ... [2020-08-22 00:24:13,049 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2020-08-22 00:24:13,060 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:24:13,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:24:13,082 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:24:13,106 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:24:13,107 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:24:13,107 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:24:13,107 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:24:13,107 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:24:13,107 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:24:13,107 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:24:13,108 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:24:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-22 00:24:13,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 00:24:13,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:24:13,141 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 00:24:13,142 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:24:13,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:24:13,148 INFO L82 PathProgramCache]: Analyzing trace with hash 652232891, now seen corresponding path program 1 times [2020-08-22 00:24:13,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:24:13,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061043020] [2020-08-22 00:24:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:24:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:13,836 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:24:13,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:24:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:13,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:24:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:13,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:24:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:13,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:24:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:13,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:24:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:13,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:24:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:13,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:24:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:13,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 00:24:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:13,923 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 00:24:13,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061043020] [2020-08-22 00:24:13,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:24:13,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:24:13,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244976232] [2020-08-22 00:24:13,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:24:13,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:24:13,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:24:13,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:24:13,951 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 4 states. [2020-08-22 00:24:15,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:24:15,166 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2020-08-22 00:24:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:24:15,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 00:24:15,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:24:15,184 INFO L225 Difference]: With dead ends: 301 [2020-08-22 00:24:15,184 INFO L226 Difference]: Without dead ends: 168 [2020-08-22 00:24:15,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:24:15,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-22 00:24:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-22 00:24:15,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-22 00:24:15,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2020-08-22 00:24:15,321 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 51 [2020-08-22 00:24:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:24:15,322 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2020-08-22 00:24:15,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:24:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2020-08-22 00:24:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:24:15,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:24:15,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:24:15,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:24:15,336 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:24:15,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:24:15,337 INFO L82 PathProgramCache]: Analyzing trace with hash -564528421, now seen corresponding path program 1 times [2020-08-22 00:24:15,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:24:15,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544980274] [2020-08-22 00:24:15,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:24:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:15,724 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:24:15,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:24:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:15,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:24:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:15,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:24:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:15,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:24:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:15,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:24:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:15,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:24:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:15,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:24:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:15,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:24:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:15,797 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 00:24:15,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544980274] [2020-08-22 00:24:15,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:24:15,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:24:15,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636434616] [2020-08-22 00:24:15,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:24:15,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:24:15,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:24:15,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:24:15,807 INFO L87 Difference]: Start difference. First operand 134 states and 159 transitions. Second operand 5 states. [2020-08-22 00:24:16,292 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:24:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:24:17,289 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2020-08-22 00:24:17,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:24:17,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 00:24:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:24:17,294 INFO L225 Difference]: With dead ends: 240 [2020-08-22 00:24:17,294 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 00:24:17,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:24:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 00:24:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 125. [2020-08-22 00:24:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-22 00:24:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2020-08-22 00:24:17,380 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 52 [2020-08-22 00:24:17,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:24:17,381 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2020-08-22 00:24:17,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:24:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2020-08-22 00:24:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 00:24:17,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:24:17,388 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] [2020-08-22 00:24:17,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:24:17,389 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:24:17,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:24:17,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1211879035, now seen corresponding path program 1 times [2020-08-22 00:24:17,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:24:17,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548542817] [2020-08-22 00:24:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:24:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:17,796 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:24:17,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:24:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:24:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:24:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:17,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:24:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:24:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:24:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:17,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:24:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:17,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:24:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:17,918 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 00:24:17,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548542817] [2020-08-22 00:24:17,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:24:17,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:24:17,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51795404] [2020-08-22 00:24:17,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:24:17,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:24:17,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:24:17,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:24:17,922 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand 9 states. [2020-08-22 00:24:18,319 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:24:18,681 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:18,935 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:19,150 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:19,940 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:24:21,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:24:21,829 INFO L93 Difference]: Finished difference Result 423 states and 537 transitions. [2020-08-22 00:24:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 00:24:21,829 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-22 00:24:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:24:21,835 INFO L225 Difference]: With dead ends: 423 [2020-08-22 00:24:21,835 INFO L226 Difference]: Without dead ends: 326 [2020-08-22 00:24:21,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:24:21,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-22 00:24:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2020-08-22 00:24:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-22 00:24:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-22 00:24:21,943 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 56 [2020-08-22 00:24:21,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:24:21,943 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-22 00:24:21,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:24:21,944 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-22 00:24:21,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 00:24:21,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:24:21,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:24:21,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:24:21,946 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:24:21,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:24:21,946 INFO L82 PathProgramCache]: Analyzing trace with hash -773448372, now seen corresponding path program 1 times [2020-08-22 00:24:21,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:24:21,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398338545] [2020-08-22 00:24:21,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:24:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:22,232 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:24:22,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:24:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:22,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:24:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:24:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:24:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:22,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:24:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:22,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:24:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:22,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:24:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:22,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:24:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:22,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 00:24:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:22,346 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 00:24:22,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398338545] [2020-08-22 00:24:22,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:24:22,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:24:22,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510956205] [2020-08-22 00:24:22,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:24:22,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:24:22,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:24:22,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:24:22,349 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 9 states. [2020-08-22 00:24:22,709 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:24:23,705 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:24,070 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:24:24,383 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:24,700 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:24:25,957 INFO L93 Difference]: Finished difference Result 845 states and 1123 transitions. [2020-08-22 00:24:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 00:24:25,958 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-22 00:24:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:24:25,965 INFO L225 Difference]: With dead ends: 845 [2020-08-22 00:24:25,965 INFO L226 Difference]: Without dead ends: 608 [2020-08-22 00:24:25,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 00:24:25,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-08-22 00:24:26,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 478. [2020-08-22 00:24:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-22 00:24:26,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2020-08-22 00:24:26,128 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 62 [2020-08-22 00:24:26,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:24:26,129 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2020-08-22 00:24:26,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:24:26,129 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2020-08-22 00:24:26,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 00:24:26,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:24:26,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:24:26,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:24:26,132 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:24:26,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:24:26,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1032831448, now seen corresponding path program 1 times [2020-08-22 00:24:26,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:24:26,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236614352] [2020-08-22 00:24:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:24:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:26,405 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:24:26,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:24:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:26,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:24:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:26,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:24:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:26,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:24:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:26,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:24:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:24:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 00:24:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:26,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:24:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:26,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 00:24:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:26,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 00:24:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:26,531 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 00:24:26,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236614352] [2020-08-22 00:24:26,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:24:26,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 00:24:26,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786535384] [2020-08-22 00:24:26,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:24:26,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:24:26,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:24:26,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:24:26,536 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand 10 states. [2020-08-22 00:24:26,939 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:24:28,010 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:28,315 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:28,594 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:29,270 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:24:30,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:24:30,528 INFO L93 Difference]: Finished difference Result 1339 states and 1842 transitions. [2020-08-22 00:24:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 00:24:30,531 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-22 00:24:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:24:30,538 INFO L225 Difference]: With dead ends: 1339 [2020-08-22 00:24:30,538 INFO L226 Difference]: Without dead ends: 889 [2020-08-22 00:24:30,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-22 00:24:30,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-22 00:24:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 693. [2020-08-22 00:24:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-08-22 00:24:30,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 847 transitions. [2020-08-22 00:24:30,692 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 847 transitions. Word has length 66 [2020-08-22 00:24:30,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:24:30,693 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 847 transitions. [2020-08-22 00:24:30,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:24:30,693 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 847 transitions. [2020-08-22 00:24:30,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 00:24:30,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:24:30,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:24:30,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:24:30,696 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:24:30,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:24:30,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1961211398, now seen corresponding path program 1 times [2020-08-22 00:24:30,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:24:30,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011974104] [2020-08-22 00:24:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:24:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:30,956 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:24:30,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:24:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:30,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:24:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:30,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:24:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:30,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:24:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:30,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:24:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:31,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:24:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 00:24:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:31,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:24:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:31,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:31,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:31,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:24:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:31,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:24:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:31,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 00:24:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:31,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 00:24:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:31,172 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 00:24:31,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011974104] [2020-08-22 00:24:31,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:24:31,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 00:24:31,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793879134] [2020-08-22 00:24:31,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:24:31,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:24:31,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:24:31,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:24:31,176 INFO L87 Difference]: Start difference. First operand 693 states and 847 transitions. Second operand 10 states. [2020-08-22 00:24:31,573 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:24:32,648 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:32,927 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 00:24:33,248 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:33,547 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:35,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:24:35,720 INFO L93 Difference]: Finished difference Result 2350 states and 3369 transitions. [2020-08-22 00:24:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 00:24:35,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 00:24:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:24:35,740 INFO L225 Difference]: With dead ends: 2350 [2020-08-22 00:24:35,741 INFO L226 Difference]: Without dead ends: 1685 [2020-08-22 00:24:35,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-22 00:24:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-22 00:24:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1247. [2020-08-22 00:24:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-08-22 00:24:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1522 transitions. [2020-08-22 00:24:36,159 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1522 transitions. Word has length 88 [2020-08-22 00:24:36,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:24:36,159 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1522 transitions. [2020-08-22 00:24:36,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:24:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1522 transitions. [2020-08-22 00:24:36,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 00:24:36,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:24:36,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:24:36,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:24:36,165 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:24:36,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:24:36,165 INFO L82 PathProgramCache]: Analyzing trace with hash 608275001, now seen corresponding path program 1 times [2020-08-22 00:24:36,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:24:36,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137581429] [2020-08-22 00:24:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:24:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,440 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:24:36,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:24:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:24:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:24:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:24:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:24:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:24:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 00:24:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:24:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:24:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:24:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 00:24:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 00:24:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:36,616 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 00:24:36,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137581429] [2020-08-22 00:24:36,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:24:36,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 00:24:36,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134620131] [2020-08-22 00:24:36,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:24:36,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:24:36,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:24:36,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:24:36,625 INFO L87 Difference]: Start difference. First operand 1247 states and 1522 transitions. Second operand 10 states. [2020-08-22 00:24:38,118 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:38,380 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 00:24:38,645 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:24:38,903 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:24:40,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:24:40,106 INFO L93 Difference]: Finished difference Result 2904 states and 3892 transitions. [2020-08-22 00:24:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 00:24:40,107 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 00:24:40,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:24:40,119 INFO L225 Difference]: With dead ends: 2904 [2020-08-22 00:24:40,119 INFO L226 Difference]: Without dead ends: 1685 [2020-08-22 00:24:40,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:24:40,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-22 00:24:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1287. [2020-08-22 00:24:40,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2020-08-22 00:24:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1562 transitions. [2020-08-22 00:24:40,374 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1562 transitions. Word has length 88 [2020-08-22 00:24:40,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:24:40,376 INFO L479 AbstractCegarLoop]: Abstraction has 1287 states and 1562 transitions. [2020-08-22 00:24:40,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:24:40,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1562 transitions. [2020-08-22 00:24:40,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 00:24:40,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:24:40,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:24:40,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:24:40,380 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:24:40,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:24:40,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1309874875, now seen corresponding path program 1 times [2020-08-22 00:24:40,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:24:40,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253518338] [2020-08-22 00:24:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:24:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,655 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:24:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:24:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:24:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:24:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:24:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:24:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:24:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 00:24:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:24:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:24:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:24:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 00:24:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 00:24:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:40,813 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 00:24:40,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253518338] [2020-08-22 00:24:40,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:24:40,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:24:40,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637340689] [2020-08-22 00:24:40,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:24:40,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:24:40,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:24:40,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:24:40,816 INFO L87 Difference]: Start difference. First operand 1287 states and 1562 transitions. Second operand 12 states. [2020-08-22 00:24:41,326 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:41,607 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:24:41,845 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:24:42,591 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:24:42,874 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:24:43,132 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:24:44,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:24:44,464 INFO L93 Difference]: Finished difference Result 2600 states and 3450 transitions. [2020-08-22 00:24:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 00:24:44,465 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-22 00:24:44,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:24:44,474 INFO L225 Difference]: With dead ends: 2600 [2020-08-22 00:24:44,474 INFO L226 Difference]: Without dead ends: 1341 [2020-08-22 00:24:44,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 00:24:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-08-22 00:24:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1063. [2020-08-22 00:24:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-08-22 00:24:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1258 transitions. [2020-08-22 00:24:44,706 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1258 transitions. Word has length 88 [2020-08-22 00:24:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:24:44,706 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 1258 transitions. [2020-08-22 00:24:44,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:24:44,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1258 transitions. [2020-08-22 00:24:44,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 00:24:44,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:24:44,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:24:44,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:24:44,712 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:24:44,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:24:44,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1814435734, now seen corresponding path program 1 times [2020-08-22 00:24:44,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:24:44,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172000867] [2020-08-22 00:24:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:24:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,026 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:24:45,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:24:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:24:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:24:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:24:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:24:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:24:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:24:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:24:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:24:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:24:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:24:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 00:24:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 00:24:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:45,134 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 00:24:45,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172000867] [2020-08-22 00:24:45,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:24:45,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:24:45,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422341564] [2020-08-22 00:24:45,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:24:45,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:24:45,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:24:45,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:24:45,137 INFO L87 Difference]: Start difference. First operand 1063 states and 1258 transitions. Second operand 8 states. [2020-08-22 00:24:45,536 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:24:48,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:24:48,191 INFO L93 Difference]: Finished difference Result 2130 states and 2835 transitions. [2020-08-22 00:24:48,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 00:24:48,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-22 00:24:48,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:24:48,203 INFO L225 Difference]: With dead ends: 2130 [2020-08-22 00:24:48,203 INFO L226 Difference]: Without dead ends: 2127 [2020-08-22 00:24:48,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-22 00:24:48,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-08-22 00:24:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1652. [2020-08-22 00:24:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2020-08-22 00:24:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1981 transitions. [2020-08-22 00:24:48,529 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1981 transitions. Word has length 92 [2020-08-22 00:24:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:24:48,531 INFO L479 AbstractCegarLoop]: Abstraction has 1652 states and 1981 transitions. [2020-08-22 00:24:48,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:24:48,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1981 transitions. [2020-08-22 00:24:48,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 00:24:48,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:24:48,539 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:48,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:24:48,539 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:24:48,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:24:48,540 INFO L82 PathProgramCache]: Analyzing trace with hash -374585462, now seen corresponding path program 1 times [2020-08-22 00:24:48,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:24:48,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149215990] [2020-08-22 00:24:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:24:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:48,923 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:24:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:24:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:48,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:24:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:24:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:48,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:24:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:48,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:24:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:24:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:24:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:24:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:24:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:24:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:24:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:24:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:24:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 00:24:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 00:24:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 00:24:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:24:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 00:24:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 00:24:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 00:24:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 00:24:49,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149215990] [2020-08-22 00:24:49,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:24:49,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 00:24:49,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854469194] [2020-08-22 00:24:49,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 00:24:49,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:24:49,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 00:24:49,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 00:24:49,360 INFO L87 Difference]: Start difference. First operand 1652 states and 1981 transitions. Second operand 19 states. [2020-08-22 00:24:50,285 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:24:50,665 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 00:24:50,952 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:24:51,205 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:24:51,956 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:24:52,550 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:52,954 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:55,425 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:55,687 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:55,953 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:56,217 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:56,490 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:56,733 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:57,022 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:57,267 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:24:58,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:24:58,199 INFO L93 Difference]: Finished difference Result 3563 states and 4503 transitions. [2020-08-22 00:24:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-22 00:24:58,200 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-22 00:24:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:24:58,211 INFO L225 Difference]: With dead ends: 3563 [2020-08-22 00:24:58,211 INFO L226 Difference]: Without dead ends: 1939 [2020-08-22 00:24:58,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 00:24:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-08-22 00:24:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1598. [2020-08-22 00:24:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1598 states. [2020-08-22 00:24:58,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 1879 transitions. [2020-08-22 00:24:58,515 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 1879 transitions. Word has length 150 [2020-08-22 00:24:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:24:58,516 INFO L479 AbstractCegarLoop]: Abstraction has 1598 states and 1879 transitions. [2020-08-22 00:24:58,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 00:24:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 1879 transitions. [2020-08-22 00:24:58,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 00:24:58,524 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:24:58,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:58,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:24:58,525 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:24:58,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:24:58,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1053600099, now seen corresponding path program 1 times [2020-08-22 00:24:58,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:24:58,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331382433] [2020-08-22 00:24:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:24:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:58,854 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:24:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:24:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:58,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:24:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:58,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:24:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:58,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:24:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:58,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:24:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:58,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:24:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:58,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:24:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:24:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:58,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:24:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:58,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:24:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:24:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:24:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:24:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 00:24:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 00:24:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 00:24:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:24:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:24:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:24:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 00:24:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 00:24:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:24:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 00:24:59,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331382433] [2020-08-22 00:24:59,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:24:59,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 00:24:59,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355954579] [2020-08-22 00:24:59,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 00:24:59,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:24:59,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 00:24:59,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:24:59,101 INFO L87 Difference]: Start difference. First operand 1598 states and 1879 transitions. Second operand 14 states. [2020-08-22 00:24:59,913 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:25:00,149 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:25:00,373 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:25:00,889 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:25:02,271 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:25:04,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:25:04,118 INFO L93 Difference]: Finished difference Result 2988 states and 3684 transitions. [2020-08-22 00:25:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 00:25:04,119 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 154 [2020-08-22 00:25:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:25:04,129 INFO L225 Difference]: With dead ends: 2988 [2020-08-22 00:25:04,129 INFO L226 Difference]: Without dead ends: 1734 [2020-08-22 00:25:04,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 00:25:04,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2020-08-22 00:25:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1482. [2020-08-22 00:25:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-08-22 00:25:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1650 transitions. [2020-08-22 00:25:04,462 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1650 transitions. Word has length 154 [2020-08-22 00:25:04,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:25:04,463 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1650 transitions. [2020-08-22 00:25:04,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 00:25:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1650 transitions. [2020-08-22 00:25:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-22 00:25:04,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:25:04,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:04,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:25:04,471 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:25:04,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:25:04,471 INFO L82 PathProgramCache]: Analyzing trace with hash -2018968461, now seen corresponding path program 1 times [2020-08-22 00:25:04,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:25:04,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626662216] [2020-08-22 00:25:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:25:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,768 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:25:04,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:25:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:25:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:25:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:25:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:25:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:25:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:25:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:25:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:25:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:25:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:25:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:25:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:25:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:25:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 00:25:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:25:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 00:25:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 00:25:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:25:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 00:25:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:25:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:25:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:25:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:25:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 00:25:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 00:25:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-22 00:25:04,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626662216] [2020-08-22 00:25:04,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:25:04,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 00:25:04,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562820989] [2020-08-22 00:25:04,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 00:25:04,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:25:04,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 00:25:04,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:25:04,938 INFO L87 Difference]: Start difference. First operand 1482 states and 1650 transitions. Second operand 10 states. [2020-08-22 00:25:05,754 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:25:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:25:07,552 INFO L93 Difference]: Finished difference Result 1918 states and 2270 transitions. [2020-08-22 00:25:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 00:25:07,553 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-08-22 00:25:07,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:25:07,554 INFO L225 Difference]: With dead ends: 1918 [2020-08-22 00:25:07,554 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:25:07,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 00:25:07,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:25:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:25:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:25:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:25:07,560 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-22 00:25:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:25:07,561 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:25:07,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 00:25:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:25:07,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:25:07,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 00:25:07,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.